CN107081150B - A kind of load platinum sodium titanate mixed crystal nano wire assembly - Google Patents
A kind of load platinum sodium titanate mixed crystal nano wire assembly Download PDFInfo
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- CN107081150B CN107081150B CN201710436782.7A CN201710436782A CN107081150B CN 107081150 B CN107081150 B CN 107081150B CN 201710436782 A CN201710436782 A CN 201710436782A CN 107081150 B CN107081150 B CN 107081150B
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- sodium titanate
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- 239000013078 crystal Substances 0.000 title claims abstract description 40
- 239000002070 nanowire Substances 0.000 title claims abstract description 35
- WACRXVBKMRXTCA-UHFFFAOYSA-N platinum sodium Chemical compound [Na].[Pt] WACRXVBKMRXTCA-UHFFFAOYSA-N 0.000 title claims abstract description 28
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- 239000003054 catalyst Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical class OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 13
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical class [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000011734 sodium Substances 0.000 claims abstract description 12
- 229910000348 titanium sulfate Inorganic materials 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 6
- 229910020272 Na2Ti9O19 Inorganic materials 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000011941 photocatalyst Substances 0.000 claims abstract description 4
- 239000010970 precious metal Chemical class 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 238000003760 magnetic stirring Methods 0.000 claims description 8
- 238000010792 warming Methods 0.000 claims description 8
- 150000002978 peroxides Chemical class 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 16
- 230000001699 photocatalysis Effects 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- GROMGGTZECPEKN-UHFFFAOYSA-N sodium metatitanate Chemical compound [Na+].[Na+].[O-][Ti](=O)O[Ti](=O)O[Ti]([O-])=O GROMGGTZECPEKN-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000003837 high-temperature calcination Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910019985 (NH4)2TiF6 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 229910020288 Na2Ti6O13 Inorganic materials 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000035568 catharsis Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- UUWCBFKLGFQDME-UHFFFAOYSA-N platinum titanium Chemical compound [Ti].[Pt] UUWCBFKLGFQDME-UHFFFAOYSA-N 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- HFDCVHDLKUZMDI-UHFFFAOYSA-N sulfuric acid titanium Chemical class [Ti].OS(O)(=O)=O HFDCVHDLKUZMDI-UHFFFAOYSA-N 0.000 description 1
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- HDUMBHAAKGUHAR-UHFFFAOYSA-J titanium(4+);disulfate Chemical compound [Ti+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O HDUMBHAAKGUHAR-UHFFFAOYSA-J 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8612—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8634—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B01J35/39—
-
- B01J35/40—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1021—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
- B01D2255/2027—Sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
- C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
- C01B2203/1064—Platinum group metal catalysts
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a kind of load platinum sodium titanate mixed crystal nano wire assemblies, which is characterized in that the assembly is by the Na of load platinum0.23TiO2/Na2Ti9O19Twin crystal phase nano wire assembles, and is used as high efficiency photocatalyst, the assembly is to roast preparation again by hydro-thermal reaction using inorganic titanium sulfate, hydrogen peroxide and precious metal salt as raw material.First, titanium sulfate is dissolved in suitable deionized water, successively by a certain amount of chloroplatinic acid, sodium hydroxide, ethylene glycol, hydrogen peroxide is added in titanium sulfate solution, then mixed solution is transferred in the reaction kettle that liner is polytetrafluoroethylene (PTFE) and carries out hydro-thermal reaction at a certain temperature, obtain precursor product, then presoma is roasted to obtain and carries platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.It is preparation method simple process of the present invention, at low cost；The prepared high catalytic efficiency for carrying platinum sodium titanate mixed crystal nano wire package assembly photochemical catalyst of this method, has good photocatalytic activity.
Description
Technical field
The invention belongs to photocatalyst material fields, are related to a kind of load platinum sodium titanate mixed crystal nano wire assembly, specifically
It says, is to be related to a kind of load platinum mixed crystal sodium titanate Na0.23TiO2/Na2Ti9O19Nano wire assembly photochemical catalyst.
Background technique
Alkali metal titanate can be used for piezoelectricity, solar energy conversion, ion exchange, adsorbent, microwave vibration as functional material
Swing the fields such as conveyer belt, plastics reinforcing agent, insulating materials, the high-energy battery of the dielectric resonator of device etc..Sodium titanate is a kind of new
The N-type semiconductor material of type, has very high photocatalytic activity, and the one-dimensional sodium titanate nano material of mono-crystalline structures is conducive to electronics
Transmission, show high photocatalysis performance.In addition, by sodium titanate (such as Na of different crystal phases0.23TiO2And Na2TixO2x+1) group
It is different due to being formed at mixed crystal two-phase interface at one of the effective means of mixed crystal and raising sodium titanate nano material photocatalytic activity
Xiang Jie can effectively hinder the compound of photo-generate electron-hole pair to generate synergistic effect, improve point of photo-generated carrier
From efficiency, and then improve the photocatalytic activity of mixed phase component.But titanate light abstraction width is narrow, can not efficiently use visible
Light.Nano-noble metal receives extensively since its surface plasmon resonance effect shows strong absorption in visible region
Concern.Light induced electron on noble-metal-supported to titanate, can will be effectively captured, the compound of photo-generate electron-hole pair is hindered,
To improve light-catalyzed reaction efficiency.
Chinese patent CN104058449A discloses a kind of preparation method of hollow structure sodium titanate, using carbon ball as template,
Hollow structure sodium titanate is prepared for using the method for collosol and gel high-temperature calcination again.Li et al. is with oxalic acid, sodium acetate and titanium dioxide
For raw material, ethyl alcohol is solvent, first obtains metatitanic acid in planetary ball mill ball milling, then through 800-1000 DEG C of high-temperature calcination in Muffle furnace
Sodium Na2Ti6O13(Electrochimica Acta 187(2016)46–54).Chen etc. is with EDTA, (NH4)2TiF6And H3BO3For
Raw material obtains Na through 900 DEG C of high-temperature calcinations2Ti6O13(Ceramics International 41(2015)9018–9023).It can
To find out the sodium titanate nanostructure prepared at present, it is concentrated mainly on the preparation of single crystal phase sodium titanate, and preparation method is wanted
Complex process or condition be harsh, prepares rare report for the sodium titanate mixed crystal of carried noble metal.
Summary of the invention
The present invention is single for existing preparation sodium titanate crystal phase, and optical response range is narrow, and the easy of photo-generate electron-hole pair is answered
It closes, proposes a kind of load platinum sodium titanate mixed crystal nano wire assembly and preparation method thereof.This method simple process, reaction condition compared with
Mildly, prepared load platinum mixed crystal sodium titanate nano wire three-dimensional assembly photochemical catalyst photocatalysis performance is high.The present invention uses
Following technical scheme is achieved:
A kind of load platinum sodium titanate mixed crystal nano wire assembly.It is characterized in that, the assembly is by load platinum
Na0.23TiO2/Na2Ti9O19Twin crystal phase nano wire assembles, and is used as high efficiency photocatalyst, the assembly is with inorganic sulfuric acid
Titanium, hydrogen peroxide and precious metal salt are raw material, roast preparation again by hydro-thermal reaction, preparation method includes the following steps:
(1) it weighs 0.2-0.5g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 3-20ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 0.6-15ml, 10-20ml of 10M, 1- are sequentially added in the mixed liquor obtained by step (1)
The 30%H of 5ml2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, at 120-200 DEG C
Incubation water heating reacts 1-24h, then takes out autoclave, after cooling, product is centrifugated, with deionized water and dehydrated alcohol
It washs respectively three times, it is dry in 60-80 DEG C of drying box；
(4) by step (3) products therefrom, it is warming up to 500-600 DEG C with the heating rate of 5-20 DEG C/min, keeps the temperature 0.5-
1h obtains carrying platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
The present invention has the advantages that predecessor used is cheap inorganic sulfuric acid titanium salt, preparation process is simple, at low cost；
The prepared high catalytic efficiency for carrying platinum sodium titanate mixed crystal nano wire package assembly photochemical catalyst of this method, has good photocatalysis
Activity.
Detailed description of the invention
The XRD spectra of platinum sodium titanate mixed crystal nano wire assembly sample is carried prepared by Fig. 1 embodiment one.
The SEM photograph of platinum sodium titanate mixed crystal nano wire assembly sample is carried prepared by Fig. 2 embodiment one.
The hydrogen generation efficiency of platinum sodium titanate mixed crystal nano wire assembly sample is carried prepared by Fig. 3 embodiment one, embodiment two
Figure.
Specific embodiment
Below by embodiment, invention is further described in detail:
Embodiment one:
(1) it weighs 0.3g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 4ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 12.5ml, 18.8ml of 10M, 2.5ml are sequentially added in the mixed liquor obtained by step (1)
30%H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 180 DEG C of constant temperature
Hydro-thermal reaction 16h, then takes out autoclave, after cooling, product is centrifugated, is washed respectively with deionized water and dehydrated alcohol
It washs three times, it is dry in 60 DEG C of drying boxes；
(4) by step (3) products therefrom, 600 DEG C is warming up to the heating rate of 10 DEG C/min, 0.5h is kept the temperature, is carried
Platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
Embodiment two:
(1) it weighs 0.3g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 10ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 12.5ml, 18.8ml of 10M, 2.5ml are sequentially added in the mixed liquor obtained by step (1)
30% H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 180 DEG C of constant temperature
16h is heated, then takes out autoclave, after cooling, product is centrifugated, washs three respectively with deionized water and dehydrated alcohol
It is secondary, it is dry in 60 DEG C of drying boxes；
(4) by step (3) products therefrom, 600 DEG C is warming up to the heating rate of 10 DEG C/min, 0.5h is kept the temperature, is carried
Platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
Embodiment three:
(1) it weighs 0.3g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 8ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 12.5ml, 18.8ml of 10M, 2.5ml time is added obtained by the step (1) in mixed liquor
30% H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 180 DEG C of constant temperature
16h is heated, then takes out autoclave, after cooling, product is centrifugated, washs three respectively with deionized water and dehydrated alcohol
It is secondary, it is dry in 60 DEG C of drying boxes；
(4) by step (3) products therefrom, 600 DEG C is warming up to the heating rate of 10 DEG C/min, 0.5h is kept the temperature, is carried
Platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
Example IV:
(1) it weighs 0.3g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 4ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 10ml, 18.8ml of 10M, 5ml30% are sequentially added in the mixed liquor obtained by step (1)
H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 200 DEG C of constant temperature
6h is heated, then takes out autoclave, after cooling, product is centrifugated, washs three respectively with deionized water and dehydrated alcohol
It is secondary, it is dry in 60 DEG C of drying boxes；
(4) by step (3) products therefrom, 600 DEG C is warming up to the heating rate of 10 DEG C/min, 0.5h is kept the temperature, is carried
Platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
Embodiment five:
(1) it weighs 0.5g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 8ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 15ml, 20ml of 10M time is added obtained by the step (1) in mixed liquor, 3ml's 30%
H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 150 DEG C of constant temperature
Heating for 24 hours, then takes out autoclave, after cooling, product is centrifugated, washs three respectively with deionized water and dehydrated alcohol
It is secondary, it is dry in 60 DEG C of drying boxes；
(4) by step (3) products therefrom, 500 DEG C is warming up to the heating rate of 5 DEG C/min, keeps the temperature 1h, obtain carrying platinum titanium
Sour sodium mixed crystal nano wire assembly photochemical catalyst.
Embodiment six:
(1) it weighs 0.4g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 16ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 13ml, 10ml of 10M are sequentially added in the mixed liquor obtained by step (1), 2ml30%'s
H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 120 DEG C of constant temperature
Heating for 24 hours, then takes out autoclave, after cooling, product is centrifugated, washs three respectively with deionized water and dehydrated alcohol
It is secondary, it is dry in 70 DEG C of drying boxes；
(4) by step (3) products therefrom, 550 DEG C is warming up to the heating rate of 15 DEG C/min, 40min is kept the temperature, is carried
Platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
Fig. 1 is that the load platinum sodium titanate mixed crystal nano wire package assembly light prepared using one the method for the embodiment of the present invention is urged
The XRD spectra of agent.As seen from the figure, the diffraction maximum in figure respectively with Na0.23TiO2Standard card (JCPDS no.22-
And Na 1404)2Ti9O19Standard card (JCPDS no.22-0752) is corresponding, wherein marking * is Na0.23TiO2Spread out
Peak is penetrated, marking # is Na2Ti9O19Diffraction maximum.Further, since the content of Pt is less, its (111) diffraction maximum is only detected.
Fig. 2 figure is the load platinum sodium titanate mixed crystal nano wire package assembly light prepared using one the method for the embodiment of the present invention
The SEM photograph of catalyst.It can be seen that the sphere aggregates that products therefrom is 2-3 μm of size, amplification factor from the photo in figure
Photo show that each sphere aggregates are assembled by elongated nano wire.Elongated nano wire is conducive to photoproduction load
The transmission for flowing son, improves the activity of photochemical catalyst, and micron-sized assembly improves the stability of photochemical catalyst.
Fig. 3 is the two kinds of load platinum sodium titanate mixed crystal nanometers prepared using the embodiment of the present invention one and two the method for embodiment
The hydrogen output and the relational graph of time of the photocatalytic hydrogen production by water decomposition of line package assembly photochemical catalyst.As can be seen from Figure, two
Kind photochemical catalyst all shows very high photodissociation aquatic products hydrogen activity.Photochemical catalyst hydrogen generation efficiency prepared by embodiment one is up to
2400 μm of ol/g, photochemical catalyst hydrogen generation efficiency prepared by embodiment two are also up to 1600 μm of ol/g.Illustrate side of the present invention
The load platinum sodium titanate mixed crystal nano wire package assembly photochemical catalyst of method preparation may be used as the efficiency light of photocatalytic hydrogen production by water decomposition
Catalyst.
Load platinum sodium titanate mixed crystal nano wire package assembly photochemical catalyst prepared by the present invention is used for organic in aqueous solution
The photocatalytic degradation of dyestuff, the experimental results showed that, various organic dyestuff all have good photocatalytic degradation efficiency, illustrate this hair
The load platinum sodium titanate mixed crystal nano wire package assembly photochemical catalyst of bright the method preparation, can be used for Organic Pollutants in Wastewater
Photocatalytic degradation processing.
Meanwhile air cleaning the experimental results showed that, the method for the invention preparation load platinum sodium titanate mixed crystal nano wire group
The pernicious gases such as assembling structure photochemical catalyst PARA FORMALDEHYDE PRILLS(91,95), toluene, hydrogen sulfide, ammonia also have good photocatalytic oxidation properties, explanation
The load platinum sodium titanate mixed crystal nano wire package assembly photochemical catalyst of the method for the invention preparation, to Common detrimental gas in air
With catharsis, it can be used for air cleaning photochemical catalyst.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation is equivalent without departing from other any changes made under the principle of the present invention and technical process, substitution, simplified etc.
Displacement, should all be included within protection scope of the present invention.
Claims (1)
1. a kind of load platinum sodium titanate mixed crystal nano wire assembly, which is characterized in that the assembly is by the Na of load platinum0.23TiO2/
Na2Ti9O19Twin crystal phase nano wire assembles, and can be used as high efficiency photocatalyst, and the assembly is with inorganic titanium sulfate, peroxide
Changing hydrogen and precious metal salt is raw material, roasts preparation again by hydro-thermal reaction, preparation method includes the following steps:
(1) it weighs 0.2-0.5g titanium sulfate and is dissolved in water, 0.2mg/ml chloroplatinic acid 3-20ml is added, is mixed evenly；
(2) ethylene glycol of the NaOH 0.6-15ml, 10-20ml of 10M, 1-5ml are sequentially added in the mixed liquor obtained by step (1)
30%H2O2, 5min is stirred on magnetic stirring apparatus；
(3) mixed liquor obtained by step (2) is transferred in the autoclave of inner liner polytetrafluoroethylene, in 120-200 DEG C of constant temperature
Hydro-thermal reaction 1-24h, then takes out autoclave, and after cooling, product is centrifugated, and is distinguished with deionized water and dehydrated alcohol
Washing is three times, dry in 60-80 DEG C of drying box；
(4) by step (3) products therefrom, it is warming up to 500-600 DEG C with the heating rate of 5-20 DEG C/min, 0.5-1h is kept the temperature, obtains
To load platinum sodium titanate mixed crystal nano wire assembly photochemical catalyst.
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|---|---|---|---|---|
| CN102949983A (en) * | 2012-12-14 | 2013-03-06 | 山东轻工业学院 | Preparation method of Na2Ti3O7 absorbing agent |
| CN103803644A (en) * | 2012-11-14 | 2014-05-21 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method for controlling product crystal form and morphology of titanium-based nanometer material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103803644A (en) * | 2012-11-14 | 2014-05-21 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method for controlling product crystal form and morphology of titanium-based nanometer material |
| CN102949983A (en) * | 2012-12-14 | 2013-03-06 | 山东轻工业学院 | Preparation method of Na2Ti3O7 absorbing agent |
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| Hydrothermal synthesis of titanate nanowire arrays;Yongnan Zhao等;《Materials Letters》;20060517;第61卷;384-388 * |
| Synthesis of Three-Dimensional (3D) Hierarchical Titanate Nanoarchitectures from Ti Particles and Their Photocatalytic Degradation of Tetracycline Hydrochloride Under Visible-Light Irradiation;Huajun Shi等;《J. Nanosci. Nanotechnol.》;20141231;第14卷(第9期);6934-6940 * |
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