CN103933962B - The lanthanum compound application as photocatalyst and the preparation method of lanthanum compound - Google Patents
The lanthanum compound application as photocatalyst and the preparation method of lanthanum compound Download PDFInfo
- Publication number
- CN103933962B CN103933962B CN201410142411.4A CN201410142411A CN103933962B CN 103933962 B CN103933962 B CN 103933962B CN 201410142411 A CN201410142411 A CN 201410142411A CN 103933962 B CN103933962 B CN 103933962B
- Authority
- CN
- China
- Prior art keywords
- lanthanum
- present
- photocatalyst
- lanthanum compound
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 150000002604 lanthanum compounds Chemical class 0.000 title claims abstract description 107
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title description 40
- NZPIUJUFIFZSPW-UHFFFAOYSA-H lanthanum carbonate Chemical compound [La+3].[La+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O NZPIUJUFIFZSPW-UHFFFAOYSA-H 0.000 claims description 74
- 229910017569 La2(CO3)3 Inorganic materials 0.000 claims description 45
- 229960001633 lanthanum carbonate Drugs 0.000 claims description 45
- YXEUGTSPQFTXTR-UHFFFAOYSA-K lanthanum(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[La+3] YXEUGTSPQFTXTR-UHFFFAOYSA-K 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 40
- 230000001699 photocatalysis Effects 0.000 abstract description 35
- 238000007146 photocatalysis Methods 0.000 abstract description 25
- 229910052747 lanthanoid Inorganic materials 0.000 abstract description 19
- 150000002602 lanthanoids Chemical class 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 239000000376 reactant Substances 0.000 abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 6
- 239000002351 wastewater Substances 0.000 abstract description 6
- 238000003915 air pollution Methods 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 5
- 238000002407 reforming Methods 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 5
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 33
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 28
- 239000000047 product Substances 0.000 description 26
- 238000001878 scanning electron micrograph Methods 0.000 description 26
- 229910052746 lanthanum Inorganic materials 0.000 description 24
- 239000011259 mixed solution Substances 0.000 description 23
- 230000003197 catalytic effect Effects 0.000 description 21
- 229910000014 Bismuth subcarbonate Inorganic materials 0.000 description 20
- 150000001875 compounds Chemical class 0.000 description 20
- 238000002441 X-ray diffraction Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 18
- 150000002603 lanthanum Chemical class 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 17
- MGLUJXPJRXTKJM-UHFFFAOYSA-L bismuth subcarbonate Chemical compound O=[Bi]OC(=O)O[Bi]=O MGLUJXPJRXTKJM-UHFFFAOYSA-L 0.000 description 16
- 229940036358 bismuth subcarbonate Drugs 0.000 description 16
- 238000003756 stirring Methods 0.000 description 16
- 238000005406 washing Methods 0.000 description 16
- 239000008367 deionised water Substances 0.000 description 15
- 229910021641 deionized water Inorganic materials 0.000 description 15
- 238000011056 performance test Methods 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 13
- 235000011114 ammonium hydroxide Nutrition 0.000 description 13
- GJKFIJKSBFYMQK-UHFFFAOYSA-N lanthanum(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GJKFIJKSBFYMQK-UHFFFAOYSA-N 0.000 description 13
- 239000007787 solid Substances 0.000 description 13
- 238000001914 filtration Methods 0.000 description 10
- 239000003513 alkali Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 7
- 238000006555 catalytic reaction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- JLRJWBUSTKIQQH-UHFFFAOYSA-K lanthanum(3+);triacetate Chemical compound [La+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JLRJWBUSTKIQQH-UHFFFAOYSA-K 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 3
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 description 3
- 238000011031 large-scale manufacturing process Methods 0.000 description 3
- 239000002073 nanorod Substances 0.000 description 3
- 239000012265 solid product Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- KQTXIZHBFFWWFW-UHFFFAOYSA-L disilver;carbonate Chemical compound [Ag]OC(=O)O[Ag] KQTXIZHBFFWWFW-UHFFFAOYSA-L 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
Landscapes
- Catalysts (AREA)
Abstract
The invention provides the lanthanum compound application as photocatalyst.The applicant studies discovery, and lanthanum compound has photocatalysis performance, and lanthanum compound application as photocatalyst is claimed.In the present invention, when lanthanum compound is as photocatalyst, its structure is beneficial to light induced electron and the separation in hole and transmission, promote the diffusion transmission of reactant and product, there is higher photocatalytic activity, can be used for the fields such as the purification of air pollution, waste water process, solar energy reforming hydrogen manufacturing, sterilization or pharmacy, use as photocatalyst.Test result indicate that, the group of the lanthanides photocatalyst that the present invention provides reaches 20%～48% to the clearance of NO under ultraviolet light drives.
Description
Technical field
The present invention relates to photocatalysis technology field, especially relate to the lanthanum compound application as photocatalyst
And the preparation method of lanthanum compound.
Background technology
Two challenges greatly that 21 century human kind sustainable development faces are exactly environmental problem and energy problem.The sun
Can have cheap, cleaning, the advantage such as renewable, therefore, efficiently and rapidly utilize, convert and store too
Sun can be the target that people make great efforts.Photocatalitic Technique of Semiconductor is just with chemical conversion and the storage of solar energy
For core, will be expected to thoroughly solve fossil energy by the photocatalytic water technology converting solar energy into Hydrogen Energy withered
Exhaust the crisis brought with greenhouse effect, and photocatalytic degradation eliminate toxic pollutant and self-cleaning surface technology,
To provide the living space of an environmental protection for us easily, therefore photocatalysis technology will become reply
One of important means of challenge.
Play pivotal role in photocatalytic process is catalysis material, and it enables to after absorbing light
Reacting substance generation chemical change, the photocatalyst of excited state can circulate raw with reactant effect in multiple times
Become intermediate material, and ensure after self is before the reaction constant by this effect.TiO2Important as one
Photocatalyst, through the exploration that decades are extensive and deep, explore and light is urged in photocatalysis rationale
The research changed in depollution of environment application is developed rapidly.With TiO2Photocatalysis technology achievement for carrier
Application and waste water process, air cleaning, dye-sensitized solar cells and multiple fields such as antibacterial.But,
TiO2It is that catalysis material still suffers from many deficiencies, such as, TiO for treating indoor air pollution aspect2
The recombination rate of electron-hole pair high, photo-quantum efficiency is relatively low；Conventional TiO2The preparation of catalysis material
Technique generally requires through high-temperature process, and energy consumption is relatively big, is difficult to realize industrialized application；TiO2Light is urged
The specific surface area of agent is less, and the specific surface area of commercially available P25 only has about 45m/g, is unfavorable for the suction of light
Receipts and the absorption to reactant, cause photocatalytic activity poor, although reducing catalyst particle size can improve
Specific surface area, but the meticulous separation difficulty of bringing of particle, and when particle diameter is < it may happen that light dissipates during 16nm
Penetrate phenomenon, therefore there is the biggest limitation.Therefore, finding and prepare novel photocatalysis material is photocatalysis
The required vital task solved of investigation of materials person.
In order to preferably utilize photocatalysis technology to realize the improvement to indoor pollution, researcher develops multiple
Non-TiO2Be catalysis material, wherein containing the photocatalyst of carbonate have excellent photo-catalysis capability and
Novel character and receive much concern, such as bismuthyl carbonate, Disilver carbonate.The photocatalytic activity of pure bismuthyl carbonate is not
Enough ideals；Due to photoetch, to cause the formation of argent to result in Disilver carbonate the most highly unstable,
This most largely constrains photocatalyst development in the actual application of the depollution of environment.
Summary of the invention
It is an object of the invention to provide the lanthanum compound application as photocatalyst and the preparation of lanthanum compound
Method, described lanthanum compound has higher photocatalytic activity as photocatalyst.
The invention provides the lanthanum compound application as photocatalyst.
Preferably, the one or many during described lanthanum compound is lanthanum carbonate, lanthanum hydroxide and basic carbonate lanthanum
Kind.
Preferably, described lanthanum compound be shaped as lamellar or shuttle shape nanometer rods.
Preferably, a length of 1.5 μm of described shuttle shape nanometer rods～2.3 μm.
Preferably, a diameter of 500nm ± 10nm of described shuttle shape nanometer rods.
The invention provides the preparation method of a kind of lanthanum compound as photocatalyst applications, including following
Step:
By solubility lanthanum salt and CO2Carry out water-bath in the basic conditions, obtain lanthanum compound.
Preferably, described by solubility lanthanum salt and CO2Carry out water-bath in the basic conditions particularly as follows:
Solubility lanthanum salt is mixed with alkali compounds in water, obtains mixed solution；
It is passed through CO in described mixed solution2Carry out water-bath.
Preferably, described solubility lanthanum salt is the one in lanthanum chloride, lanthanum acetate, lanthanum sulfate and Lanthanum (III) nitrate
Or it is several.
Preferably, CO it is passed through described in2Time be≤600min；
Described CO2Flow be 0.01L/min～10L/min.
Preferably, the temperature of described water-bath is 0 DEG C～200 DEG C.
The invention provides the lanthanum compound application as photocatalyst.The applicant studies discovery, lanthanum
Compound has photocatalysis performance, and lanthanum compound application as photocatalyst is claimed.In the present invention,
When lanthanum compound is as photocatalyst, its structure is beneficial to light induced electron and the separation in hole and transmission, promotes
The diffusion transmission of reactant and product, has higher photocatalytic activity, and under visible light can be steady
Fixed existence, can be used for the purification of air pollution, waste water process, solar energy reforming hydrogen manufacturing, sterilization or pharmacy
In field, use as photocatalyst.Test result indicate that, the group of the lanthanides photocatalyst that the present invention provides exists
Under ultraviolet light driving, the clearance to NO reaches 20%～48%.
And, the present invention is by solubility lanthanum salt and CO2Carry out water-bath in the basic conditions, obtain lanthanum
Compound.The method that the present invention provides is with CO2As carbon source, deposited by a step, obtain lanthanum compound,
Can be by controlling CO2Amount controls the kind of the lanthanum compound obtained, as obtained lanthanum carbonate, hydroxide
Lanthanum and basic carbonate lanthanum.The method that the present invention provides is simple, mild condition, simple to operate, be beneficial to it big
Large-scale production.
Accompanying drawing explanation
Fig. 1 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 1 preparation；
Fig. 2 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 2 preparation；
Fig. 3 is the XRD figure spectrum of the lanthanum compound of the embodiment of the present invention 3 preparation；
Fig. 4 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 3 preparation；
Fig. 5 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 4 preparation；
Fig. 6 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 5 preparation；
Fig. 7 is the XRD figure spectrum of the lanthanum compound of the embodiment of the present invention 6 preparation；
Fig. 8 is the SEM image of the lanthanum hydroxide of the embodiment of the present invention 6 preparation；
Fig. 9 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 7 preparation；
Figure 10 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 8 preparation；
Figure 11 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 9 preparation；
Figure 12 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 10 preparation；
Figure 13 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 11 preparation；
Figure 14 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 12 preparation；
Figure 15 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 13 preparation.
Detailed description of the invention
The invention provides the lanthanum compound application as photocatalyst.
The applicant studies discovery, and lanthanum compound has photocatalysis performance, it is claimed as photocatalysis
The application of agent.Described lanthanum compound has higher catalysis activity, can be used for room air pollution purification,
The fields such as waste water process, solar energy reforming hydrogen manufacturing, sterilization and pharmacy.
In the present invention, during described lanthanum compound is preferably lanthanum carbonate, lanthanum hydroxide and basic carbonate lanthanum
One or more.In the present invention, described lanthanum compound be preferably shaped to lamellar or shuttle shape nanometer rods；
The length of described shuttle shape nanometer rods is preferably 1.5 μm～2.3 μm, more preferably 1.7 μm～21 μm；Described
The diameter of shuttle shape nanometer rods is preferably 500nm ± 10nm, more preferably 500nm ± 5nm.At this
In bright, the lanthanum compound of above-mentioned shape is two-dimensional structure, for the photocatalyst of particle shape,
The lanthanum compound of above-mentioned shape is conducive to light induced electron and the separation in hole and biography during light-catalysed
Defeated, and then suppression electronics and hole is compound, improves its photocatalysis performance；And what above-mentioned shape was formed
Micro structure heap poststack forms cavernous structure, and this cavernous structure of formation can promote reactant and product
Diffusion transmission, improves photocatalysis performance further.
The invention provides the preparation method of a kind of lanthanum compound, comprise the following steps:
By solubility lanthanum salt and CO2Carry out water-bath in the basic conditions, obtain lanthanum compound.
The preparation method that the present invention provides is with CO2For carbon source, by it with solubility lanthanum salt in the basic conditions
Carry out water-bath, lanthanum compound can be obtained with one-step method deposition.The method that the present invention provides is simple, bar
Part is gentle, simple to operate, beneficially the large-scale industrial production of lanthanum compound；And the side that the present invention provides
Method can obtain the lanthanum compound of above-mentioned shape to lanthanum compound there is higher catalysis live
Property；And the lanthanum compound that the method for present invention offer obtains has higher degree of crystallinity, its nanostructured
Catalytic performance there is is facilitation, further improves the photocatalytic activity of lanthanum compound.
The present invention does not has special restriction to the offer method of described alkalescence condition, uses people in the art
Alkaline condition known to Yuan obtains technical scheme.In the present invention, described alkalescence condition is by alkalization
Compound provides.The present invention is to described solubility lanthanum salt, alkali compounds and CO2The order of mixing does not has spy
Different restriction, uses material order by merging well known to those skilled in the art.The present invention is preferred:
Solubility lanthanum salt is mixed with alkali compounds in water, obtains mixed solution；
It is passed through CO in described mixed solution2Carry out water-bath.
Described solubility lanthanum salt is preferably mixed in water by the present invention with alkali compounds, obtains mixed solution；
More preferably the aqueous solution of described solubility lanthanum salt is mixed with alkali compounds, obtain mixed solution.This
Bright do not have special restriction to the aqueous solvent in described solubility lanthanum saline solution, uses people in the art
Water known to Yuan, as used deionized water.In the present invention, described solubility lanthanum salt is preferred
Including one or more in lanthanum chloride, lanthanum acetate, lanthanum sulfate and Lanthanum (III) nitrate；The present invention is to described, chlorine
The classification changing lanthanum, lanthanum acetate, lanthanum sulfate and Lanthanum (III) nitrate does not has special restriction, as used anhydrous chlorine
Change lanthanum, Glacial acetic acid lanthanum, a hydration lanthanum acetate, 1.5 hydration lanthanum acetates, anhydrous slufuric acid lanthanum or six hydration nitre
Acid lanthanum.In the present invention, in described solubility lanthanum salt, the molar concentration of lanthanum element is preferably 9.0 × 10-3
Mol/L～4.2 × 10-2Mol/L, more preferably 9.6 × 10-3Mol/L～3.0 × 10-2Mol/L, most preferably
1.0×10-2Mol/L～2.1 × 10-2mol/L。
In the present invention, described alkali compounds is ammonia, and the mass concentration of described ammonia is preferably 0.1
Mol/L～3.0mol/L, more preferably 0.5mol/L～2.5mol/L, most preferably 1.0mol/L～2.0
mol/L；In described solubility lanthanum salt, the amount of the material of lanthanum element is preferably with the volume ratio of described ammonia
(1.08～5.04) × 10-3Mol:(5～30) mL, more preferably (1.152～3.6) × 10-3Mol:(10～25)
ML, most preferably (1.2～2.52) × 10-3mol:15mL。
After solubility lanthanum salt is preferably mixed with alkali compounds in water by the present invention, it is stirred, obtains
The solubility lanthanum salt of mix homogeneously and the mixed solution of alkali compounds.The present invention parameter to described stirring,
As temperature, time etc. do not have special restriction, use the technical side of stirring well known to those skilled in the art
Case.In the present invention, the time of described stirring is preferably 0min～40min, and more preferably 10
Min～35min, most preferably 20min～30min.
After obtaining mixed solution, the present invention is preferably passed through CO under water bath condition in described mixed solution2,
Carry out water-bath, obtain lanthanum compound.In the present invention, CO it is passed through described in2Flow be preferably 0.01
L/min～10L/min, more preferably 0.1L/min～5L/min, most preferably 1.1L/min～2.5L/min；
Described it is passed through CO2Time be preferably≤600min, more preferably 5min～60min, most preferably 25
Min～40min.In the present invention, can be by controlling CO2The time being passed through and/or the temperature of water-bath,
I.e. time of water-bath and/or the temperature of water-bath, controls the kind of the lanthanum compound generated, as
It is passed through CO2Time control can generate lanthanum hydroxide in 10min；It is passed through CO2Time more than 10
Min and lanthanum carbonate or basic carbonate lanthanum can be generated under different reaction temperatures, referring specifically to following enforcement
The record of example.
The present invention, preferably under water bath condition, is passed through CO in described mixed solution2；In the present invention,
The temperature of described water-bath is preferably 0 DEG C～200 DEG C, more preferably 25 DEG C～160 DEG C, and most preferably 65
DEG C～140 DEG C, it is also possible to be 85 DEG C～120 DEG C.
After completing described water-bath, water-bath system is preferably cooled down by the present invention, obtains product.
The present invention does not has special restriction to the method for described cooling, uses cooling well known to those skilled in the art
Technical scheme, as described water-bath system can being cooled to use in the way of natural cooling
Room temperature.
After obtaining product, described product is preferably centrifuged by the present invention, filter, wash and
Organic solvent is washed, and obtains solid product.The present invention is to described being centrifuged, filter, wash and organic solvent being washed
Parameter there is no special restriction, use and well known to those skilled in the art be centrifuged, filter, wash and have
The technical scheme that machine solvent is washed.In the present invention, described washing is preferably deionized water washing；Institute
State organic solvent and be preferably ethanol；The number of times of described washing is preferably 1～5 time, more preferably 2～3 times；
The number of times that described organic solvent is washed is preferably 1～5 time, more preferably 2～3 times.
After obtaining solid product, described solid product is preferably dried by the present invention, obtains lanthanum compound.This
The invention parameter to described drying, as temperature, time etc. are not particularly limited, uses people in the art
The technical scheme of the drying known to Yuan.In the present invention, the temperature of described drying is preferably 50 DEG C～100
DEG C, more preferably 60 DEG C～90 DEG C, most preferably 60 DEG C～70 DEG C.
After obtaining lanthanum compound, the lanthanum compound obtained is characterized and performance test by the present invention, thing phase
And morphology characterization process and result as follows:
The present invention carries out X-ray diffraction (XRD) and analyzes the group of the lanthanides photocatalyst obtained, and result shows,
The thing of the group of the lanthanides photocatalyst that the present invention provides is La mutually2(CO3)3And LaCO3OH and La (OH)3；
The present invention is scanned Electronic Speculum (SEM) and transmission electron microscope (TEM) to the group of the lanthanides photocatalyst obtained
Scanning analysis, result shows, along with the difference of reaction condition of the present invention so that the group of the lanthanides that the present invention provides
The form of photocatalyst is lamellar or shuttle shape nanometer rods；Described shuttle shape nanometer rods pattern length is about 1.5
μm～2.3 μm, described group of the lanthanides shuttle shape nanometer rods pattern diameter is about 500nm.
The present invention, with NO for test object, tests the photocatalysis performance of the lanthanum compound obtained, specifically
Process and result are as follows:
Under conditions of relative humidity preferably 40%～80%, oxygen content are 15%～25%, by 0.1
The group of the lanthanides photocatalyst that g～the 0.5g present invention provides is placed in during NO flows continuously, the initial concentration of described NO
Being preferably 500ppb～600ppb, the gas flow that described NO flows continuously is preferably 2.4L/min～4.0
L/mim, described group of the lanthanides photocatalyst is irradiated by the uviol lamp using power to be 6W, obtains it
Clearance to NO.Test result indicate that, the group of the lanthanides photocatalyst that the present invention the provides clearance to NO
Being 20%～48%, the group of the lanthanides photocatalyst that this explanation present invention provides has higher catalysis activity.
The invention provides the lanthanum compound application as photocatalyst.The applicant studies discovery, lanthanum
Compound has photocatalysis performance, and lanthanum compound application as photocatalyst is claimed.In the present invention,
When lanthanum compound is as photocatalyst, its structure is beneficial to light induced electron and the separation in hole and transmission, promotes
The diffusion transmission of reactant and product, has higher photocatalytic activity, can be used for air pollution
The fields such as purification, waste water process, solar energy reforming hydrogen manufacturing, sterilization or pharmacy, use as photocatalyst.
Test result indicate that, the group of the lanthanides photocatalyst that the present invention provides is clearance to NO under ultraviolet light drives
Reach 20%～48%.
And, the present invention is by solubility lanthanum salt and CO2Carry out water-bath in the basic conditions, obtain lanthanum
Compound.The method that the present invention provides is with CO2As carbon source, deposited by a step, obtain lanthanum compound,
Can be by controlling CO2Amount controls the kind of the lanthanum compound obtained, as obtained lanthanum carbonate, hydroxide
Lanthanum and basic carbonate lanthanum.The method that the present invention provides is simple, mild condition, simple to operate, be beneficial to it big
Large-scale production.
In order to further illustrate the present invention, the lanthanum compound conduct present invention provided below in conjunction with embodiment
The application of photocatalyst and the preparation method of lanthanum compound are described in detail, but can not they be understood
For limiting the scope of the present invention.
Embodiment 1
0.504g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 25mL
Concentration is the strong aqua ammonia of 1.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water-bath
In, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, CO2The flow being passed through is 1.1
L/min, the time of being passed through is 30min.After reaction terminates, take out product, product is centrifugal,
Filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum chemical combination
Thing.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete La2(CO3)3Crystal structure；
The lanthanum carbonate obtained is carried out SEM scanning analysis by the present invention, and result is as it is shown in figure 1, Fig. 1 is this
The SEM image of the lanthanum carbonate of inventive embodiments 1 preparation, as seen from Figure 1, prepared by the present embodiment
Lanthanum carbonate is the nanostructured of nanometer sheet stacking, and the thickness of nanometer sheet is about 40nm～60nm；
The present invention have studied the photocatalytic activity of the group of the lanthanides photocatalyst obtained, and detailed process is as follows: in phase
Being 60% to humidity, oxygen content is in the environment of 21%, and group of the lanthanides light 0.2g embodiment 1 obtained is urged
Agent is placed in NO stream, and the initial concentration of described NO is 550ppb, and the flow of described NO stream is 2.4
L/min, uses a power to be group of the lanthanides photocatalyst described in the uviol lamp of 6W and is irradiated, calculate
Group of the lanthanides photocatalyst to embodiment 1 preparation is 15% to the clearance of NO, and result is as shown in table 1,
Urging of the bismuth subcarbonate photocatalyst that the lanthanum compound that table 1 obtains for the embodiment of the present invention and comparative example obtain
Change the performance test results.
Embodiment 2
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 2.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is
1.5L/min, the time of being passed through is 30min.Reaction terminate after, take out product, by product from
The heart, filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum
Compound.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete La2(CO3)3Crystalline structure；
The lanthanum carbonate obtained is carried out SEM scanning analysis by the present invention, and result is as in figure 2 it is shown, Fig. 2 is this
The SEM image of the lanthanum carbonate of inventive embodiments 2 preparation, as seen from Figure 2, prepared by the present embodiment
Lanthanum carbonate is the nanostructured of nanometer sheet stacking, and the thickness of nanometer sheet is about 40nm～60nm.
The photocatalysis of lanthanum carbonate prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of bismuth subcarbonate photocatalyst.
Embodiment 3
2.166g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 0.5mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is
3L/min, the time of being passed through is 30min.After reaction terminates, take out product, product is centrifugal,
Filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum chemical combination
Thing.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result is as it is shown on figure 3, Fig. 3 is this
The XRD figure spectrum of the lanthanum compound of bright embodiment 3 preparation, as seen from Figure 3, prepared by the present embodiment
Lanthanum compound has stable and complete La2(CO3)3Crystalline structure；
The lanthanum carbonate obtained is carried out SEM scanning analysis by the present invention, and as shown in Figure 4, Fig. 4 is this to result
The SEM image of the lanthanum carbonate of inventive embodiments 3 preparation, as seen from Figure 4, prepared by the present embodiment
Lanthanum carbonate is the nanostructured of nanometer sheet stacking, and the thickness of nanometer sheet is about 40nm～60nm.
The photocatalysis of lanthanum carbonate prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of bismuth subcarbonate photocatalyst.
Embodiment 4
2.166g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 5mL and rubs
Your concentration is the strong aqua ammonia of 3.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water-bath
In Guo, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is 5
L/min, the time of being passed through is 30min.After reaction terminates, take out product, product is centrifugal,
Filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum chemical combination
Thing.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete La2(CO3)3Crystalline structure；
The present invention lanthanum carbonate to obtaining carries out SEM scanning analysis, and result is as it is shown in figure 5, Fig. 5 is this
The SEM image of the lanthanum carbonate of inventive embodiments 4 preparation, as seen from Figure 5, prepared by the present embodiment
Lanthanum carbonate is the nanostructured of nanometer sheet stacking, and the thickness of nanometer sheet is about 40nm～60nm.
The photocatalysis of lanthanum carbonate prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of bismuth subcarbonate photocatalyst.
Embodiment 5
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 30mL
Molar concentration is the strong aqua ammonia of 0.1mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is
1.1L/min, the time of being passed through is 30min.Reaction terminate after, take out product, by product from
The heart, filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum
Compound.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound catalyst has stable and complete La2(CO3)3Crystalline structure；
The present invention lanthanum carbonate to obtaining carries out SEM scanning analysis, and as shown in Figure 6, Fig. 6 is this to result
The SEM image of the lanthanum carbonate of inventive embodiments 5 preparation, as seen from Figure 6, prepared by the present embodiment
Lanthanum carbonate is the nanostructured of nanometer sheet stacking, and the thickness of nanometer sheet is about 40nm～60nm.
The photocatalysis of lanthanum carbonate prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of bismuth subcarbonate photocatalyst.
Embodiment 6
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 1.5mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is
1.1L/min, the time of being passed through is 5min.After reaction terminates, take out product, product is centrifugal,
Filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum chemical combination
Thing.
The lanthanum compound obtained is carried out XRD analysis by the present invention, and result is as it is shown in fig. 7, Fig. 7 is this
The XRD figure spectrum of the lanthanum compound of bright embodiment 6 preparation, as seen from Figure 7, prepared by the present embodiment
Lanthanum compound has complete and stable La (OH)3Crystalline structure；
The lanthanum hydroxide obtained is carried out SEM scanning analysis by the present invention, and as shown in Figure 8, Fig. 8 is result
The SEM image of the lanthanum hydroxide of the embodiment of the present invention 6 preparation, as seen from Figure 8, the present embodiment system
Standby lanthanum hydroxide is bar-shaped lanthanum hydroxide, and nanorod length is about 500nm～600nm.
The light of lanthanum hydroxide prepared by technique study that the present invention provides according to embodiment 1 the present embodiment is urged
Changing performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of the bismuth subcarbonate photocatalyst arrived.
Embodiment 7
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Concentration is the strong aqua ammonia of 2.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water-bath
In, bath temperature is 25 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is 1.1
L/min, the time of being passed through is 60min.After reaction terminates, take out product, product is centrifugal,
Filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum chemical combination
Thing.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete La2(CO3)3Crystalline structure；
The lanthanum carbonate obtained is carried out SEM scanning analysis by the present invention, and result is as it is shown in figure 9, Fig. 9 is this
The SEM image of the lanthanum carbonate of inventive embodiments 7 preparation, as seen from Figure 9, prepared by the present embodiment
Lanthanum carbonate is nanometer sheet.
The photocatalysis of lanthanum carbonate prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of bismuth subcarbonate photocatalyst.
Embodiment 8
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 2.5mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 45 DEG C, is passed through CO wherein2React, be passed through CO2Flow is 1.1
L/min, the time of being passed through is 30min.After reaction terminates, take out product, product is centrifugal,
Filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum chemical combination
Thing.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete La2(CO3)3Crystalline structure；
The lanthanum carbonate obtained is carried out SEM scanning analysis by the present invention, result as shown in Figure 10, Tu10Wei
The SEM image of the lanthanum carbonate of the embodiment of the present invention 8 preparation, as seen from Figure 10, the present embodiment system
Standby lanthanum carbonate is nanometer sheet and the nanostructured of nanometer rods stacking, and the thickness of nanometer sheet is about 40
Nm～60nm, nanorod length is about 500nm～600nm.
The photocatalysis of lanthanum carbonate prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Performance, result is as shown in table 1, and the lanthanum compound that table 1 obtains for the embodiment of the present invention obtains with comparative example
The catalytic performance test result of bismuth subcarbonate photocatalyst.
Embodiment 9
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 1.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 65 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is
1.1L/min, the time of being passed through is 30min.Reaction terminate after, take out product, by product from
The heart, filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum
Compound.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete LaCO3OH crystalline structure；
The basic carbonate lanthanum obtained is carried out SEM scanning analysis by the present invention, and result as shown in figure 11, is schemed
11 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 9 preparation, as seen from Figure 11, this enforcement
Basic carbonate lanthanum prepared by example is shuttle shape, and length is about 2 μm～3 μm.
The light of basic carbonate lanthanum prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Catalytic performance, result is as shown in table 1, lanthanum compound that table 1 obtains for the embodiment of the present invention and comparative example
The catalytic performance test result of the bismuth subcarbonate photocatalyst obtained.
Embodiment 10
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 1.5mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 85 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow is
1.1L/min, the time of being passed through is 30min.Reaction terminate after, take out product, by product from
The heart, filtration, 3 washings and 1 ethanol are washed, and then dry the solid obtained at 60 DEG C, obtain lanthanum
Compound.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete LaCO3OH crystalline structure；
The basic carbonate lanthanum obtained is carried out SEM scanning analysis by the present invention, and result as shown in figure 12, is schemed
12 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 10 preparation, as seen from Figure 12, and this
Basic carbonate lanthanum prepared by embodiment is shuttle shape, and length is about 1.5 μm～3 μm.
The light of basic carbonate lanthanum prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Catalytic performance, result is as shown in table 1, lanthanum compound that table 1 obtains for the embodiment of the present invention and comparative example
The catalytic performance test result of the bismuth subcarbonate photocatalyst obtained.
Embodiment 11
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 1.5mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 100 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow
For 1.1L/min, the time of being passed through is 30min.After reaction terminates, take out product, by product
Centrifugal, filter, 3 washings and 1 ethanol are washed, at 60 DEG C, then dry the solid obtained, obtain
Lanthanum compound.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete LaCO3OH crystalline structure；
The basic carbonate lanthanum obtained is carried out SEM scanning analysis by the present invention, and result as shown in figure 13, is schemed
13 is the SEM image of the basic carbonate lanthanum of the embodiment of the present invention 11 preparation, as seen from Figure 13, and this
Basic carbonate lanthanum prepared by embodiment is shuttle shape, and rod length is about 2 μm.
The light of basic carbonate lanthanum prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Catalytic performance, result is as shown in table 1, lanthanum compound that table 1 obtains for the embodiment of the present invention and comparative example
The catalytic performance test result of the bismuth subcarbonate photocatalyst obtained.
Embodiment 12
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 1.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 120 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow
For 1.1L/min, the time of being passed through is 30min.After reaction terminates, take out product, by product
Centrifugal, filter, 3 washings and 1 ethanol are washed, at 60 DEG C, then dry the solid obtained, obtain
Lanthanum compound.
The present invention lanthanum compound to obtaining carries out XRD analysis, and result shows, lanthanum prepared by the present embodiment
Compound has stable and complete LaCO3OH crystalline structure；
The basic carbonate lanthanum obtained is carried out SEM scanning analysis by the present invention, and result as shown in figure 14, is schemed
14 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 12 preparation, as seen from Figure 14, this enforcement
Basic carbonate lanthanum prepared by example is rod-like basic type lanthanum carbonate, and nanorod length is about 2 μm, width is about 500
nm。
The light of basic carbonate lanthanum prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Catalytic performance, result is as shown in table 1, lanthanum compound that table 1 obtains for the embodiment of the present invention and comparative example
The catalytic performance test result of the bismuth subcarbonate photocatalyst obtained.
Embodiment 13
1.083g lanthanum nitrate hexahydrate is dissolved in 120mL deionized water, is added thereto to 15mL
Molar concentration is the strong aqua ammonia of 3.0mol/L, after stirring 30 minutes, the mixed solution obtained is placed in water
In bath, bath temperature is 140 DEG C, is passed through CO wherein2Carry out water-bath, be passed through CO2Flow
For 1.1L/min, the time of being passed through is 30min.After reaction terminates, take out product, by product
Centrifugal, filter, 3 washings and 1 ethanol are washed, at 60 DEG C, then dry the solid obtained, obtain
Lanthanum compound.
The present invention carries out XRD analysis to the alkali lanthanum compound obtained, and result shows, prepared by the present embodiment
Lanthanum compound has stable and complete LaCO3OH crystalline structure；
The basic carbonate lanthanum obtained is carried out SEM scanning analysis by the present invention, and result as shown in figure 15, is schemed
15 is the SEM image of the lanthanum carbonate of the embodiment of the present invention 13 preparation, as seen from Figure 15, this enforcement
The mixture that basic carbonate lanthanum is nanometer rods and nano-particle prepared by example.
The light of basic carbonate lanthanum prepared by technique study that the present invention provides according to embodiment 1 the present embodiment
Catalytic performance, result is as shown in table 1, lanthanum compound that table 1 obtains for the embodiment of the present invention and comparative example
The catalytic performance test result of the bismuth subcarbonate photocatalyst obtained.
Comparative example
Use the method that the Chinese patent literature embodiment 2 of Publication No. CN101817555A is recorded, system
For obtaining bismuth subcarbonate photocatalyst.
Bismuthyl carbonate photocatalysis prepared by this comparative example of technique study that the present invention provides according to embodiment 1
The catalytic performance of agent, result is as shown in table 1, the lanthanum compound that table 1 obtains for the embodiment of the present invention with than
The catalytic performance test result of the bismuth subcarbonate photocatalyst that relatively example obtains.
The catalytic performance of the bismuthyl carbonate that the lanthanum compound that table 1 embodiment of the present invention obtains obtains with comparative example
Test result
| Embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | Comparative example |
| NO clearance (%) | 15 | 22.6 | 15.9 | 19.5 | 16.6 | 17.5 | 22.4 | 24.6 | 29.0 | 31.6 | 36.7 | 34.9 | 45.9 | 10.8 |
As can be seen from Table 1, at identical conditions, the group of the lanthanides photocatalyst that the present invention provides is to NO
The bismuth subcarbonate photocatalyst prepared higher than comparative example of the clearance clearance to NO, the present invention is described
The group of the lanthanides photocatalyst provided has higher photocatalytic activity.
As seen from the above embodiment, the invention provides the lanthanum compound application as photocatalyst.This Shen
Asking someone to study and find, lanthanum compound has photocatalysis performance, lanthanum compound is claimed as photocatalyst
Application.In the present invention, when lanthanum compound is as photocatalyst, its structure is beneficial to light induced electron and sky
The separation in cave and transmission, promote the diffusion transmission of reactant and product, have higher photocatalysis and live
Property, can be used for the necks such as the purification of air pollution, waste water process, solar energy reforming hydrogen manufacturing, sterilization or pharmacy
Territory, uses as photocatalyst.Test result indicate that, the group of the lanthanides photocatalyst that the present invention provides is in ultraviolet
Under optical drive, the clearance to NO reaches 20%～48%.
And, the present invention is by solubility lanthanum salt and CO2Carry out water-bath in the basic conditions, obtain lanthanum
Compound.The method that the present invention provides is with CO2As carbon source, deposited by a step, obtain lanthanum compound,
Can be by controlling CO2Amount controls the kind of the lanthanum compound obtained, as obtained lanthanum carbonate, hydroxide
Lanthanum and basic carbonate lanthanum.The method that the present invention provides is simple, mild condition, simple to operate, be beneficial to it big
Large-scale production.
The above is only the preferred embodiment of the present invention, it is noted that general for the art
For logical technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvement and profit
Decorations, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
1. lanthanum compound is as the application of the photocatalyst removing NO；Described lanthanum compound is one or more in lanthanum carbonate, lanthanum hydroxide and basic carbonate lanthanum.
Application the most according to claim 1, it is characterised in that described lanthanum compound be shaped as lamellar or shuttle shape nanometer rods.
Application the most according to claim 2, it is characterised in that a length of 1.5 μm ~ 2.3 μm of described shuttle shape nanometer rods.
Application the most according to claim 2, it is characterised in that a diameter of 500 nm ± 10 nm of described shuttle shape nanometer rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410142411.4A CN103933962B (en) | 2014-04-10 | 2014-04-10 | The lanthanum compound application as photocatalyst and the preparation method of lanthanum compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410142411.4A CN103933962B (en) | 2014-04-10 | 2014-04-10 | The lanthanum compound application as photocatalyst and the preparation method of lanthanum compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103933962A CN103933962A (en) | 2014-07-23 |
| CN103933962B true CN103933962B (en) | 2016-09-28 |
Family
ID=51181993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410142411.4A Expired - Fee Related CN103933962B (en) | 2014-04-10 | 2014-04-10 | The lanthanum compound application as photocatalyst and the preparation method of lanthanum compound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103933962B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044838B (en) * | 2016-07-28 | 2017-05-24 | 乐山沃耐稀电子材料有限公司 | Production technology of low-sulfur lanthanum hydroxide |
| CN112076785B (en) * | 2020-08-28 | 2021-09-14 | 四川大学 | Carbon nitride/lanthanum hydroxide nanofiber membrane and preparation method and application thereof |
| CN113908822B (en) * | 2021-09-28 | 2023-08-01 | 江西理工大学 | (BiO) 2 OHCl/La(OH) 3 Preparation method and application of composite visible light catalyst |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671685A (en) * | 2012-06-06 | 2012-09-19 | 福州大学 | Photocatalytic basic lanthanum carbonate and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4956130B2 (en) * | 2006-10-05 | 2012-06-20 | 日産自動車株式会社 | Exhaust gas purification catalyst |
-
2014
- 2014-04-10 CN CN201410142411.4A patent/CN103933962B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671685A (en) * | 2012-06-06 | 2012-09-19 | 福州大学 | Photocatalytic basic lanthanum carbonate and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 不同形貌氢氧化镧纳米晶的光催化性能;符馨元等;《硅酸盐学报》;20130831;第41卷(第8期);第1158-1162页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103933962A (en) | 2014-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102527420B (en) | Preparation method of bismuth subcarbonate photocatalyst | |
| CN103301867B (en) | Carbon nitride photocatalyst of a kind of inorganic ions doping and preparation method thereof | |
| CN102974373B (en) | Preparation method of visible-light photocatalytic material | |
| CN107115884B (en) | g-C3N4/TiO2Nano-wire assembled structure photocatalyst | |
| CN104888858B (en) | A kind of ternary high efficiency composition visible-light photocatalysis material and preparation method thereof | |
| CN101422725B (en) | Preparation method and use of visible light responsive nitrogen-doped titanium dioxide nano-tube | |
| CN105664979B (en) | A kind of mesoporous nano microspheroidal Ln-Bi5O7I photochemical catalysts and preparation method thereof | |
| CN104014326A (en) | Efficient photocatalyst for bismuth vanadate nanorod and preparation method of catalyst | |
| CN103055903B (en) | Preparation method of visible light catalytic material with adjustable BiOI-AgI spherical solid solution | |
| Zhao et al. | Degradation of Rhodamine B and Safranin‐T by MoO3: CeO2 Nanofibers and Air Using a Continuous Mode | |
| CN109908903A (en) | A kind of high-specific surface area Lignin-Based Activated Carbon is nickel-base catalyst and its preparation and application of carrier | |
| CN108654675B (en) | g-C3N4/TiO2(B) Preparation method of composite microspheres | |
| CN105771948A (en) | Double-shell titanium dioxide catalyst with high photocatalytic hydrogen generation performance and preparation method thereof | |
| CN105887332A (en) | Preparation method of nitrogen-doped flexible TiO2-SiO2 nanofiber membrane with visible light catalytic function | |
| CN106040269A (en) | Preparation method and application of BiOI-reduced graphene oxide composite photocatalyst | |
| CN112958061B (en) | Oxygen vacancy promoted direct Z mechanism mesoporous Cu2O/TiO2Photocatalyst and preparation method thereof | |
| CN102698727B (en) | Method for preparing supported TiO2 photocatalyst with high thermal stability | |
| CN103933962B (en) | The lanthanum compound application as photocatalyst and the preparation method of lanthanum compound | |
| CN108940255A (en) | A kind of zinc oxide catalysis material and the preparation method and application thereof | |
| CN106622293A (en) | Preparation method of H-TiO2/CdS/Cu(2-x)S nanoribbon | |
| CN108686658A (en) | A kind of C-QDs-Fe2O3/TiO2Composite photo-catalyst and preparation method thereof | |
| CN102600829A (en) | Bismuth series photocatalyst, and preparation method thereof | |
| CN102125831A (en) | Method for preparing mesoporous Bi2O3/TiO2 nano photocatalyst | |
| CN104001491A (en) | CeO2/TiO2 nanometer composite hollow sphere catalyst and preparation method thereof | |
| CN103769175B (en) | A kind of preparation method of composite photo-catalyst and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 |