CN106984311A - A kind of silver metavanadate is combined the preparation method of the silver-colored photochemical catalyst of wolframic acid - Google Patents

A kind of silver metavanadate is combined the preparation method of the silver-colored photochemical catalyst of wolframic acid Download PDF

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Publication number
CN106984311A
CN106984311A CN201710201083.4A CN201710201083A CN106984311A CN 106984311 A CN106984311 A CN 106984311A CN 201710201083 A CN201710201083 A CN 201710201083A CN 106984311 A CN106984311 A CN 106984311A
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silver
metavanadate
colloid
wolframic acid
combined
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侯仔尧
赵文昌
冯婷
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Changzhou University
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Changzhou University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54Catalysts 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
    • B01J23/66Silver or gold
    • B01J23/68Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/683Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum or tungsten
    • B01J23/687Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum or tungsten with tungsten
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/308Dyes; Colorants; Fluorescent agents
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Catalysts (AREA)

Abstract

The present invention discloses the preparation method that a kind of silver metavanadate is combined the silver-colored photochemical catalyst of wolframic acid, comprises the following steps that:12~16mmol silver nitrates are weighed, 12mmol/L silver nitrate solution is configured to, 6.6~8mmol ammonium metavanadates are weighed, in 40~60 DEG C of water, 10mmol/L sodium metavanadate solution are configured to;Both the above solution is mixed under 350~400 revs/min of rotating speed, colloid substance is formed, 3~4h is persistently stirred, ammonium metavanadate and nitric acid silver reaction in whipping process generate silver metavanadate colloid;Silver metavanadate colloid is placed in pellicle bag, with distillation water washing 3~4 times, get rid of dissociated ion, the silver metavanadate colloid is added in the sodium tungstate solution that 160~180mL concentration is 1~2mol/L again, soaked 2~4 days, in silver metavanadate particle surface formation wolframic acid silver nano-grain, separation of solid and liquid, deionized water washing solid 2~3 times, 75~105 DEG C of drying are made a kind of silver metavanadate and are combined the silver-colored photochemical catalyst of wolframic acid.This method is that catalyst and carrier are combined closely in carrier surface formation catalyst.

Description

A kind of silver metavanadate is combined the preparation method of the silver-colored photochemical catalyst of wolframic acid
Technical field
The present invention relates to the preparation method that a kind of silver metavanadate is combined the silver-colored photochemical catalyst of wolframic acid, belong to sewage in environmental protection Processing technology field.
Background technology
Traditional method for treating water efficiency is low, cost is high, there are secondary pollution problems, and waste water control always cannot be well Solution.The development and application of nanometer technology are likely to thoroughly solve this problem.Start within 1972 to find TiO2Oxidation activity Higher, chemical stability is good, harmless to the human body, and cost is low, pollution-free, has a wide range of application, thus is most paid attention to, but TiO2 Larger (such as anatase TiO of energy gap2Energy gap Eg=3.2eV), be only capable of absorb ultraviolet region (wavelength is less than Light 387nm), the utilization ratio to solar energy is relatively low.
In contaminant degradation and production of energy field, conductor photocatalysis is one of most promising method.Work as energy Amount will produce point of electron-hole pair when being more than or equal to the photon irradiation of semiconductor energy gap in photocatalyst surface From this is the initial basic step of light-catalyzed reaction.In order to find efficient photochemical catalyst, numerous studies work is all concentrated on In the influence factor for studying photocatalytic activity.Because silver had not only had catalytic activity Yuan but also lewis acidic property can be shown, Meanwhile, silver is compared with other metals, such as gold, platinum, and price is more cheap, therefore with stronger industrial applicability.But inclined vanadium Sour silver is due to the limitation of itself characteristic, and in terms of photocatalytic degradation, performance need to be improved.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to propose that a kind of silver metavanadate is combined the silver-colored photochemical catalyst of wolframic acid Preparation method, this method be carrier surface formation catalyst, catalyst and carrier are combined closely.
The technical solution adopted by the present invention is to use following steps:
1) 12~16mmol silver nitrates are weighed, 12mmol/L silver nitrate solution is configured to, the inclined vanadium of 6.6~8mmol is weighed Sour ammonium, in 40~60 DEG C of water, is configured to 10mmol/L sodium metavanadate solution;
2) both the above solution is mixed under 350~400 revs/min of rotating speed, forms colloid substance, persistently stir 3 ~4h, ammonium metavanadate and nitric acid silver reaction in whipping process generate silver metavanadate colloid;
3) silver metavanadate colloid is placed in pellicle bag, with water washing is distilled 3~4 times, gets rid of dissociated ion, then will The silver metavanadate colloid is added in the sodium tungstate solution that 160~180mL concentration is 1~2mol/L, is soaked 2~4 days, in inclined vanadium Sour Argent grain surface forms wolframic acid silver nano-grain, separation of solid and liquid, and deionized water washs solid 2~3 times, 75~105 DEG C of drying, A kind of silver metavanadate is made and is combined the silver-colored photochemical catalyst of wolframic acid.
The beneficial effects of the invention are as follows:(1) this method utilizes the difference of solubility product constant, forms molten on silver metavanadate surface The smaller wolframic acid Argent grain of degree product constant.
(2) silver metavanadate and wolframic acid silver are compound, and synergy can be such that silver metavanadate preferably plays under visible light and urge Change acts on and can obtain good catalytic effect.
Embodiment
Embodiment 1
16mmol silver nitrates are weighed, 12mmol/L silver nitrate solution is configured to, 8mmol ammonium metavanadates are weighed, at 60 DEG C In water, 10mmol/L sodium metavanadate solution is configured to;Both the above solution is mixed under 400 revs/min of rotating speed, formed Colloid substance, persistently stirs 4h, ammonium metavanadate and nitric acid silver reaction in whipping process, generates silver metavanadate colloid;By inclined vanadium Sour silver colloid is placed in pellicle bag, with water washing is distilled 4 times, gets rid of dissociated ion, then the silver metavanadate colloid is added To 180mL concentration in 2mol/L sodium tungstate solution, to soak 4 days, in silver metavanadate particle surface formation wolframic acid silver nanoparticle Grain, separation of solid and liquid, deionized water washing solid 3 times, 105 DEG C of drying are made a kind of silver metavanadate and are combined the silver-colored photochemical catalyst of wolframic acid.
Obtained silver metavanadate is combined wolframic acid silver photochemical catalyst 0.3g and is added to the acid orange that 300mL concentration is 40mg/L In II waste water, under the irradiation of 300w Metal halogen lamps, 30min is reacted, percent of decolourization is 95.5%, profit can be repeated after catalyst separation With.
Embodiment 2
12mmol silver nitrates are weighed, 12mmol/L silver nitrate solution is configured to, 6.6mmol ammonium metavanadates are weighed, 40 In DEG C water, 10mmol/L sodium metavanadate solution is configured to;Both the above solution is mixed under 350 revs/min of rotating speed, shape Agglutination material, persistently stirs 3h, ammonium metavanadate and nitric acid silver reaction in whipping process, generates silver metavanadate colloid;Will be inclined Vanadic acid silver colloid is placed in pellicle bag, with water washing is distilled 3 times, gets rid of dissociated ion, then the silver metavanadate colloid is added Enter to 160mL concentration in 1mol/L sodium tungstate solution, to soak 2 days, in silver metavanadate particle surface formation wolframic acid silver nanoparticle Particle, separation of solid and liquid, deionized water washing solid 2 times, 75 DEG C of drying are made a kind of silver metavanadate and are combined the silver-colored photocatalysis of wolframic acid Agent.
Obtained silver metavanadate is combined wolframic acid silver photochemical catalyst 0.3g and is added to the gold orange 7 that 300mL concentration is 40mg/L In waste water, under the irradiation of 300w Metal halogen lamps, 30min is reacted, percent of decolourization is 96.1%, can be reused after catalyst separation. For identical waste water under the same conditions, the degradation efficiency of pure silver metavanadate is 68.5%, substantially increases its effect Effect.
Embodiment 3
14mmol silver nitrates are weighed, 12mmol/L silver nitrate solution is configured to, 7mmol ammonium metavanadates are weighed, at 60 DEG C In water, 10mmol/L sodium metavanadate solution is configured to;Both the above solution is mixed under 400 revs/min of rotating speed, formed Colloid substance, persistently stirs 4h, ammonium metavanadate and nitric acid silver reaction in whipping process, generates silver metavanadate colloid;By inclined vanadium Sour silver colloid is placed in pellicle bag, with water washing is distilled 4 times, gets rid of dissociated ion, then the silver metavanadate colloid is added To 180mL concentration in 1mol/L sodium tungstate solution, to soak 4 days, in silver metavanadate particle surface formation wolframic acid silver nanoparticle Grain, separation of solid and liquid, deionized water washing solid 3 times, 105 DEG C of drying are made a kind of silver metavanadate and are combined the silver-colored photochemical catalyst of wolframic acid.
Obtained silver metavanadate is combined wolframic acid silver photochemical catalyst 0.3g and is added to the rhodamine that 300mL concentration is 40mg/L In B waste water, under the irradiation of 300w Metal halogen lamps, 30min is reacted, percent of decolourization is 95.7%, can be reused after catalyst separation.

Claims (1)

1. a kind of silver metavanadate is combined the preparation method of the silver-colored photochemical catalyst of wolframic acid, it is characterized in that in turn including the following steps:
1) 12~16mmol silver nitrates are weighed, 12mmol/L silver nitrate solution is configured to, 6.6~8mmol ammonium metavanadates are weighed, In 40~60 DEG C of water, 10mmol/L sodium metavanadate solution is configured to;
2) both the above solution is mixed under 350~400 revs/min of rotating speed, forms colloid substance, persistently stir 3~4h, Ammonium metavanadate and nitric acid silver reaction in whipping process, generate silver metavanadate colloid;
3) silver metavanadate colloid is placed in pellicle bag, with water washing is distilled 3~4 times, gets rid of dissociated ion, then this is inclined Vanadic acid silver colloid is added in the sodium tungstate solution that 160~180mL concentration is 1~2mol/L, is soaked 2~4 days, in silver metavanadate Particle surface formation wolframic acid silver nano-grain, separation of solid and liquid, deionized water washing solid 2~3 times, 75~105 DEG C of drying are made A kind of silver metavanadate is combined the silver-colored photochemical catalyst of wolframic acid.
CN201710201083.4A 2017-03-30 2017-03-30 A kind of silver metavanadate is combined the preparation method of the silver-colored photochemical catalyst of wolframic acid Pending CN106984311A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109107575B (en) * 2018-10-31 2021-07-02 安徽师范大学 Zinc tungstate/silver vanadate composite nanomaterial, preparation method and photocatalytic application thereof
CN114192143A (en) * 2021-12-28 2022-03-18 福州大学 Preparation and application of silver tungstate/silver metavanadate composite photocatalyst
CN114917903A (en) * 2022-05-27 2022-08-19 福州大学 Preparation and application of silver metavanadate thin-film photocatalyst

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150046570A (en) * 2013-10-22 2015-04-30 한양대학교 산학협력단 Composition for silver nano particle preparation and silver nano particle preparation method using the same
CN105289674A (en) * 2015-11-17 2016-02-03 中国科学院海洋研究所 AgVO3/Ag3PO4 heterojunction composite photocatalyst and preparation method and application thereof
CN105498812A (en) * 2016-01-25 2016-04-20 陕西科技大学 One-dimensional Ag@AgCl/V2O5 filamentous nano compound and preparation method thereof
CN106140159A (en) * 2016-07-12 2016-11-23 陕西科技大学 One quickly prepares bar-shaped AgVO3the method of nano-photocatalyst
CN106268900A (en) * 2016-07-21 2017-01-04 吉林师范大学 A kind of g C3n4quantum dot sensitized AgVO3the preparation method of nano wire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150046570A (en) * 2013-10-22 2015-04-30 한양대학교 산학협력단 Composition for silver nano particle preparation and silver nano particle preparation method using the same
CN105289674A (en) * 2015-11-17 2016-02-03 中国科学院海洋研究所 AgVO3/Ag3PO4 heterojunction composite photocatalyst and preparation method and application thereof
CN105498812A (en) * 2016-01-25 2016-04-20 陕西科技大学 One-dimensional Ag@AgCl/V2O5 filamentous nano compound and preparation method thereof
CN106140159A (en) * 2016-07-12 2016-11-23 陕西科技大学 One quickly prepares bar-shaped AgVO3the method of nano-photocatalyst
CN106268900A (en) * 2016-07-21 2017-01-04 吉林师范大学 A kind of g C3n4quantum dot sensitized AgVO3the preparation method of nano wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109107575B (en) * 2018-10-31 2021-07-02 安徽师范大学 Zinc tungstate/silver vanadate composite nanomaterial, preparation method and photocatalytic application thereof
CN114192143A (en) * 2021-12-28 2022-03-18 福州大学 Preparation and application of silver tungstate/silver metavanadate composite photocatalyst
CN114917903A (en) * 2022-05-27 2022-08-19 福州大学 Preparation and application of silver metavanadate thin-film photocatalyst

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Application publication date: 20170728