CN106944035B - A kind of oxygen auto-dope stratiform niobium oxide powder and its preparation method and application - Google Patents
A kind of oxygen auto-dope stratiform niobium oxide powder and its preparation method and application Download PDFInfo
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- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910000484 niobium oxide Inorganic materials 0.000 title claims abstract description 81
- 239000000843 powder Substances 0.000 title claims abstract description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000001301 oxygen Substances 0.000 title claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000007864 aqueous solution Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000000047 product Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000006303 photolysis reaction Methods 0.000 claims abstract description 4
- 239000011941 photocatalyst Substances 0.000 claims abstract description 3
- 239000002244 precipitate Substances 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims abstract description 3
- 239000010955 niobium Substances 0.000 claims description 44
- 230000001376 precipitating effect Effects 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 7
- 239000003344 environmental pollutant Substances 0.000 claims 1
- 231100000719 pollutant Toxicity 0.000 claims 1
- 230000035484 reaction time Effects 0.000 claims 1
- 230000001699 photocatalysis Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006735 epoxidation reaction Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- WPCMRGJTLPITMF-UHFFFAOYSA-I niobium(5+);pentahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[Nb+5] WPCMRGJTLPITMF-UHFFFAOYSA-I 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/20—Vanadium, niobium or tantalum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0203—Preparation of oxygen from inorganic compounds
- C01B13/0207—Water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a kind of oxygen auto-dope stratiform niobium oxide powders and its preparation method and application, belong to field of photocatalytic material.The technical solution of use are as follows: H is added in stratiform niobium oxide powder2O2In aqueous solution, after being stirred to react, filtering by washing of precipitate, drying, obtains O2 2–Auto-dope stratiform niobium oxide powder.The present invention utilizes the open architecture characteristic of stratiform niobium oxide, dexterously by H2O2Molecule is introduced into the inside (NbO of stratiform niobium oxide6Between between octahedral layer) so that the visible light-responded O of preparation2 2–The NbO of auto-dope stratiform niobium oxide powder6There are a large amount of Nb-O-O- coordinate bond between octahedral layer, forbidden bandwidth is 2.7~2.9eV, can be used as visible-light photocatalyst, the application in terms of degradable organic pollutant and photodissociation aquatic products oxygen.This method technical process is simple, and low energy consumption, easily controllable, zero-emission, is suitable for the advantages that mass production in enormous quantities.
Description
Technical field
The invention belongs to field of photocatalytic material, and in particular to a kind of oxygen (O2 2–) auto-dope stratiform niobium oxide powder and
Preparation method and application.
Background technique
Stratiform niobium oxide (H4Nb6O17, HNb3O8, H4Nb2O7Deng) it is by NbO6Octahedral layer and interlayer H+What ion was constituted
Open structure two-dimensional material.Since its kind nontoxic, chemical property is stable, and photocatalysis performance is excellent under ultraviolet light, in recent years
It is widely studied as catalysis material.But stratiform niobium oxide forbidden bandwidth is larger (Eg > 3.2eV), it is seen that photoresponse
Ability is poor, can not effectively utilize solar energy.Currently, many scholars by semiconductors coupling, it is noble metal decorated, doping with
And the means such as microstructure testing improve the visible light catalytic performance of stratiform niobium oxide.
O2 2–Auto-dope niobium oxide, that is, the peroxide of niobium, mainly using in terms of organic matter epoxida tion catalyst.And
That applies in terms of photocatalysis is considerably less, Oliveira L C A etc. magazine [RSC Advances, 2015,5 (55):
44567-44570] on report titanium dioxide surface precipitating niobium hydroxide, then use dioxygen water process, obtain having visible
The O of photoresponse2 2–Niobium hydroxide/TiO of auto-dope2Compound photochemical catalyst.Currently, preparation O2 2–The side of auto-dope niobium oxide
Method mainly passes through H2O2The aqueous solution unformed hydration niobium oxide of processing come obtain (Catalysis Communications,
2013,37:85-91).(Adv.Funct.Mater.2011,21,3744-3752) H first2O2Aqueous solution is reacted with butyl titanate
The peroxide of soluble titanium is generated, the peroxide xerogel of drying to obtain titanium is then passed through.But use H2O2At aqueous solution
The niobium oxide crystal grain of reason crystal type cannot generate O2 2–Auto-dope niobium oxide, and can only some Nb-O- of grain surface generation
O- coordinate bond.This is because the niobium oxide of crystal type is a solid construction, H2O2Molecule cannot enter titania
Caused by inside.
Stratiform niobium oxide is larger due to its forbidden bandwidth, it is seen that photoresponse ability is poor, and carries out to stratiform niobium oxide
It is modified mainly to carry out Heterogeneous Composite by solid phase high temperature dopant or with other semiconductors to realize.But these methods are modified
Speed is slow, complex process, is difficult to control, and is not suitable for producing in enormous quantities.
Summary of the invention
In order to overcome the problems of the above-mentioned prior art, the purpose of the present invention is to provide a kind of oxygen (O2 2–) auto-dope
Stratiform niobium oxide powder and its preparation method and application, this method have simple process, low energy consumption, zero-emission, be suitble to industry
The advantages that metaplasia produces；Through O made from this method2 2–Auto-dope stratiform niobium oxide powder forbidden bandwidth is narrow, it is seen that photoresponse ability
By force.
The present invention is to be achieved through the following technical solutions:
The invention discloses a kind of O2 2–Auto-dope stratiform niobium oxide raw powder's production technology, by stratiform niobium oxide powder
H is added in body2O2In aqueous solution, after being stirred to react, filtering by washing of precipitate, drying, obtains O2 2–Auto-dope stratiform niobium oxide powder
Body.
Preferably, layered niobium oxide powder is the white niobates with stratiform open architecture.
Preferably, stratiform niobium oxide powder is H4Nb6O17、HNb3O8Or H4Nb2O7。
Preferably, layered niobium oxide powder and H2O2The amount ratio of aqueous solution is (0.5~1) g:(10~100)
mL。
Preferably, H2O2The mass concentration of aqueous solution is 5%~30%.
Preferably, being stirred to react the time is 1~30min.
Preferably, precipitating, which is adopted, is washed with deionized；Drying temperature is 40~80 DEG C.
The invention also discloses adopt that O is made with the aforedescribed process2 2–Auto-dope stratiform niobium oxide powder, the O2 2–Auto-dope
Stratiform niobium oxide powder is in yellow, NbO6There are Nb-O-O- coordinate bond between octahedral layer, forbidden bandwidth is 2.5~
2.9eV。
The invention also discloses above-mentioned O2 2–Auto-dope stratiform niobium oxide powder answering as visible-light photocatalyst
With.The O2 2–Auto-dope stratiform niobium oxide powder being capable of degradable organic pollutant and photodissociation aquatic products oxygen.
Compared with prior art, the invention has the following beneficial technical effects:
O disclosed by the invention2 2–H is used in auto-dope stratiform niobium oxide raw powder's production technology, selection2O2Aqueous solution is to stratiform
Structure niobium oxide powder carries out O2 2–Auto-dope, since stratiform niobium oxide has open architecture, H2O2Molecule easily enters
To NbO6Between octahedral layer, O is formed2 2–Auto-dope stratiform niobium oxide, and then the forbidden bandwidth of stratiform niobium oxide is reduced, it reaches
Having arrived stratiform niobium oxide under visible light has the purpose of photocatalytic activity.It is modified with solid phase high temperature dopant and heterogeneous partly lead is answered
Conjunction is compared, O2 2–Auto-dope has technical process simple, and low energy consumption, easily controllable, zero-emission, is suitable for the advantages that mass production in enormous quantities.
The present invention utilizes the open architecture characteristic of stratiform niobium oxide, dexterously by H2O2Molecule is introduced into the oxidation of stratiform niobium
Inside (the NbO of object6Between between octahedral layer) so that the visible light-responded O of preparation2 2–Auto-dope stratiform niobium oxide powder
NbO6There are a large amount of Nb-O-O- coordinate bond between octahedral layer, forbidden bandwidth is 2.7~2.9eV, can be used as visible light light
Catalyst, the application in terms of degradable organic pollutant and photodissociation aquatic products oxygen.
Detailed description of the invention
Fig. 1 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17Color camera；Wherein, (a) is layer
Shape H4Nb6O17；It (b) is O2 2–Auto-dope H4Nb6O17；
Fig. 2 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17XRD spectra；
Fig. 3 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17UV-vis DRS spectrogram；
Fig. 4 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17Transient photocurrents figure；
Fig. 5 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17To the Visible Light Induced Photocatalytic figure of RhB dyestuff.
Fig. 6 is O prepared by the present invention2 2–Auto-dope H4Nb6O17Figure is recycled to the Visible Light Induced Photocatalytic of RhB dyestuff.
Fig. 7 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17Visible light catalytic decomposes aquatic products oxygen figure.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Embodiment 1
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 0.5g:100mL, by stratiform niobium oxide white powder
H4Nb6O17It is added to the H that mass concentration is 28%2O2In aqueous solution, after stirring 30min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 40 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 2
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:50mL, by stratiform niobium oxide white powder
H4Nb6O17It is added to the H that mass concentration is 30%2O2In aqueous solution, after stirring 20min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 80 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 3
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:10mL, by stratiform niobium oxide white powder
H4Nb6O17It is added to the H that mass concentration is 30%2O2In aqueous solution, after stirring 10min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 55 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 4
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:100mL, by layered titanic acid white powder HNb3O8
It is added to the H that mass concentration is 20%2O2In aqueous solution, after stirring 5min, filtering, precipitating is washed with deionized, at 55 DEG C
The O of yellow is obtained after dry 1h2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 5
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:10mL, by stratiform niobium oxide white powder
HNb3O8It is added to the H that mass concentration is 20%2O2In aqueous solution, after stirring 5min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 55 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 6
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:20mL, by stratiform niobium oxide white powder
HNb3O8It is added to the H that mass concentration is 5%2O2In aqueous solution, after stirring 2min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 40 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 7
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:10mL, by stratiform niobium oxide white powder
H4Nb2O7, it is added to the H that mass concentration is 5%2O2In aqueous solution, after stirring 1min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 80 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 8
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:10mL, by stratiform niobium oxide white powder
H4Nb2O7, it is added to the H that mass concentration is 5%2O2In aqueous solution, after stirring 1min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 60 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Embodiment 9
According to stratiform niobium oxide and H2O2The dosage of aqueous solution is 1g:10mL, by stratiform niobium oxide white powder
H4Nb2O7, it is added to the H that mass concentration is 5%2O2In aqueous solution, after stirring 1min, filtering, precipitating is washed with deionized,
The O of yellow is obtained after dry 1h at 80 DEG C2 2–Auto-dope stratiform niobium oxide powder.
Referring to Fig. 1, from fig. 1, it can be seen that in (a) powder be white, (b) in O2 2–Auto-dope H4Nb6O17Show yellow.Ginseng
See Fig. 2, as can be seen from Figure 2, all diffraction maximums of stratiform niobium oxide all with O2 2–Auto-dope H4Nb6O17Substantially it coincide, illustrates dioxygen
Layer structure after water-treated and untreated preceding there is no changing, only in the diffraction maximum of (040) crystal face from 10.33 ° to the left
9.54 ° are displaced to, corresponding NbO6Octahedral layer spacing has been expanded to 0.927nm from 0.857nm, illustrates that hydrogen peroxide enters
Interlayer, so that interlamellar spacing increases.Fig. 3 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17UV, visible light it is unrestrained
Reflectance spectrum figure shows O as can be seen from Figure 32 2–Auto-dope H4Nb6O17Visible light can be effectively absorbed, light absorption band edge is
565nm, i.e. forbidden bandwidth are 2.7eV.Fig. 4 is O prepared by the present invention2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17Transient state light
Current graph；As can be seen from Figure 4, O2 2–Auto-dope H4Nb6O17Efficiently separating for photo-generate electron-hole can be effectively facilitated.Fig. 5 is this
Invent the O of preparation2 2–Auto-dope H4Nb6O17With stratiform H4Nb6O17To the Visible Light Induced Photocatalytic figure of RhB dyestuff；As can be seen from Figure 5, O2 2–From
Adulterate H4Nb6O17With visible light catalytic performance, and stratiform niobium oxide does not have.Fig. 6 is O prepared by the present invention2 2–Auto-dope
H4Nb6O17Figure is recycled to the Visible Light Induced Photocatalytic of RhB dyestuff；As can be seen from Figure 6, O2 2–Auto-dope H4Nb6O17It is steady with good circulation
It is qualitative.Fig. 7 is O prepared by the present invention2 2–Auto-dope H4Nb6O17Visible photocatalysis aquatic products oxygen figure；As can be seen from Figure 7, O2 2–Auto-dope
H4Nb6O17With visible photocatalysis aquatic products oxygen performance, oxygen-producing amount is 13 μm of olg-1。
Above said content is that a further detailed description of the present invention in conjunction with specific preferred embodiments, is not
Whole or unique embodiment, those of ordinary skill in the art are by reading description of the invention to technical solution of the present invention
Any equivalent transformation taken, all are covered by the claims of the invention.
Claims (8)
1. a kind of O2 2–Auto-dope stratiform niobium oxide raw powder's production technology, which is characterized in that add stratiform niobium oxide powder
Enter H2O2In aqueous solution, after being stirred to react, filtering by washing of precipitate, drying, obtains O2 2–Auto-dope stratiform niobium oxide powder；
Layered niobium oxide powder is the H with stratiform open architecture4Nb6O17、HNb3O8Or H4Nb2O7Powder；
O obtained2 2–The NbO of auto-dope stratiform niobium oxide powder6There are Nb-O-O- coordinate bond between octahedral layer, forbidden band is wide
Degree is 2.5~2.9eV.
2. O according to claim 12 2–Auto-dope stratiform niobium oxide raw powder's production technology, which is characterized in that described
Stratiform niobium oxide powder and H2O2The amount ratio of aqueous solution is (0.5~1) g:(10~100) mL.
3. O according to claim 1 or 22 2–Auto-dope stratiform niobium oxide raw powder's production technology, which is characterized in that
H2O2The mass concentration of aqueous solution is 5%~30%.
4. O according to claim 12 2–Auto-dope stratiform niobium oxide raw powder's production technology, which is characterized in that stirring
Reaction time is 1~30min.
5. O according to claim 12 2–Auto-dope stratiform niobium oxide raw powder's production technology, which is characterized in that precipitating
It adopts and is washed with deionized；Drying temperature is 40~80 DEG C.
6. using O made from method described in any one of Claims 1 to 52 2–Auto-dope stratiform niobium oxide powder,
It is characterized in that, the O2 2–Auto-dope stratiform niobium oxide powder is in yellow.
7. O as claimed in claim 62 2–Application of the auto-dope stratiform niobium oxide powder as visible-light photocatalyst.
8. the use as claimed in claim 7, which is characterized in that the O2 2–Auto-dope stratiform niobium oxide powder can degrade and have
Machine pollutant and photodissociation aquatic products oxygen.
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| CN113083326B (en) * | 2021-03-30 | 2022-06-10 | 宁德师范学院 | Novel bonded zinc indium sulfide/niobic acid heterojunction photocatalyst and preparation method and application thereof |
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| CN103159260A (en) * | 2013-04-03 | 2013-06-19 | 福州大学 | Preparation method and application of molecular-level-thickness HNb3O8 nanosheet |
| CN105689015A (en) * | 2016-03-25 | 2016-06-22 | 陕西科技大学 | Visible light responded layered titanic acid photocatalyst as well as peroxidation modifying method and application of visible light responded layered titanic acid photocatalyst |
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| CN103159260A (en) * | 2013-04-03 | 2013-06-19 | 福州大学 | Preparation method and application of molecular-level-thickness HNb3O8 nanosheet |
| CN105689015A (en) * | 2016-03-25 | 2016-06-22 | 陕西科技大学 | Visible light responded layered titanic acid photocatalyst as well as peroxidation modifying method and application of visible light responded layered titanic acid photocatalyst |
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| "Peroxo-niobium oxyhydroxide sensitized TiO2 crystals";L.C.A. Oliveira.;《RSC Advances》;20150512(第5期);第44568页右栏第1段、图2 |
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