CN107096554A - A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst - Google Patents

A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst Download PDF

Info

Publication number
CN107096554A
CN107096554A CN201710201102.3A CN201710201102A CN107096554A CN 107096554 A CN107096554 A CN 107096554A CN 201710201102 A CN201710201102 A CN 201710201102A CN 107096554 A CN107096554 A CN 107096554A
Authority
CN
China
Prior art keywords
silver
phosphate
phosphoric acid
cobalt
colloid
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.)
Pending
Application number
CN201710201102.3A
Other languages
Chinese (zh)
Inventor
张鑫宇
赵文昌
冯婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou University
Original Assignee
Changzhou University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou University filed Critical Changzhou University
Priority to CN201710201102.3A priority Critical patent/CN107096554A/en
Publication of CN107096554A publication Critical patent/CN107096554A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14Phosphorus; Compounds thereof
    • B01J27/185Phosphorus; Compounds thereof with iron group metals or platinum group metals
    • B01J27/1853Phosphorus; Compounds thereof with iron group metals or platinum group metals with iron, cobalt or nickel
    • 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
    • C02F2101/34Organic compounds containing oxygen
    • 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
    • C02F2101/36Organic compounds containing halogen
    • 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
    • C02F2101/38Organic compounds containing nitrogen
    • 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
    • C02F2101/40Organic compounds containing sulfur
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/10Photocatalysts
    • 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

Landscapes

  • 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 cobalt phosphate aids in silver phosphate photocatalyst, comprises the following steps that:Silver nitrate and disodium phosphate soln are mixed, yellow green colloid substance is formed, 3~4h is persistently stirred, disodium hydrogen phosphate and nitric acid silver reaction in whipping process generate phosphoric acid silver colloid;Phosphoric acid silver colloid is placed in pellicle bag, with distillation water washing 3~4 times, get rid of dissociated ion, the phosphoric acid silver colloid is added in the cobalt nitrate solution that 60~80mL concentration is 1~2mol/L again, immersion 1~3 day, in silver orthophosphate particle surface formation phosphoric acid cobalt nano-particle, a kind of cobalt phosphate auxiliary silver phosphate photocatalyst is made.This method is the cocatalyst in major catalyst surface recombination, greatly improves the stability and catalytic efficiency of major catalyst.

Description

A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst
Technical field
The present invention relates to the preparation method that a kind of cobalt phosphate aids in silver phosphate photocatalyst, belong in environmental protection at sewage Manage technical 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.In June, 2010, material research institution researcher has found that silver orthophosphate has light The effect of catalyst, and photooxidation effect is to be currently known more than the decades of times of various photochemical catalysts.But due to silver orthophosphate itself Unstable, easy self-reversal, causes catalyst degradation performance to reduce rapidly in photocatalysis.And it is that a nothing is stopped to improve photocatalysis effect The work in border.
Silver compound photochemical catalyst has the advantages that the big extensive attention by scientists of absorption region, and co-catalyst Introducing can greatly improve the catalytic performance and stability of raw catalyst, therefore appendix co-catalyst is also to improve catalyst performance One of important means of energy.
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 a kind of cobalt phosphate auxiliary silver phosphate photocatalyst Preparation method, this method is the cocatalyst in major catalyst surface recombination, greatly improves the stability of major catalyst and urges Change efficiency.
The technical solution adopted by the present invention is to use following steps:
1) 20~24mmol silver nitrates are weighed, 20mmol/L silver nitrate solution is configured to, 6.6~8mmol phosphoric acid is weighed Disodium hydrogen, is configured to 20mmol/L disodium phosphate soln;
2) both the above solution is mixed under 350~400 revs/min of rotating speed, forms yellow green colloid substance, continued 3~4h is stirred, disodium hydrogen phosphate and nitric acid silver reaction in whipping process generate phosphoric acid silver colloid;
3) phosphoric acid silver colloid is placed in pellicle bag, with water washing is distilled 3~4 times, gets rid of dissociated ion, then should Phosphoric acid silver colloid is added in the cobalt nitrate solution that 60~80mL concentration is 1~2mol/L, is soaked 1~3 day, in phosphoric acid Argent grain Surface forms phosphoric acid cobalt nano-particle, and one kind is made in separation of solid and liquid, deionized water washing solid 2~3 times, 75~105 DEG C of drying Cobalt phosphate aids in silver phosphate photocatalyst.
The beneficial effects of the invention are as follows:(1) this method utilizes the difference of solubility product constant, in phosphoric acid silver surface formation solubility The smaller phosphoric acid cobalt granule of product constant.
(2) cobalt phosphate auxiliary silver phosphate catalyst, synergy, can improve the stability of silver orthophosphate and improve catalysis effect Really.
Embodiment
Embodiment 1
24mmol silver nitrates are weighed, 20mmol/L silver nitrate solution is configured to, 8mmol disodium hydrogen phosphates are weighed, configured Into 20mmol/L disodium phosphate soln;Both the above solution is mixed under 400 revs/min of rotating speed, yellow green is formed Colloid substance, persistently stirs 4h, disodium hydrogen phosphate and nitric acid silver reaction in whipping process, generates phosphoric acid silver colloid;By phosphoric acid Silver colloid is placed in pellicle bag, with water washing is distilled 4 times, gets rid of dissociated ion, then the phosphoric acid silver colloid is added to 80mL concentration is in 2mol/L cobalt nitrate solution, soaks 3 days, in silver orthophosphate particle surface formation phosphoric acid cobalt nano-particle, Gu Liquid is separated, deionized water washing solid 3 times, and a kind of cobalt phosphate auxiliary silver phosphate photocatalyst is made in 105 DEG C of drying.
Aid in silver phosphate photocatalyst 0.3g to be added to the acid red that 500mL concentration is 30mg/L obtained cobalt phosphate to give up In water, under the irradiation of 300w Metal halogen lamps, 30min is reacted, percent of decolourization is 96.1%, can be reused after catalyst separation.
Embodiment 2
20mmol silver nitrates are weighed, 20mmol/L silver nitrate solution is configured to, 6.6mmol disodium hydrogen phosphates is weighed, matches somebody with somebody It is set to 20mmol/L disodium phosphate soln;Both the above solution is mixed under 350 revs/min of rotating speed, formed yellowish green Color colloid substance, persistently stirs 3h, disodium hydrogen phosphate and nitric acid silver reaction in whipping process, generates phosphoric acid silver colloid;By phosphorus Sour silver colloid is placed in pellicle bag, with water washing is distilled 3 times, gets rid of dissociated ion, then the phosphoric acid silver colloid is added to 60mL concentration is in 1mol/L cobalt nitrate solution, soaks 1 day, in silver orthophosphate particle surface formation phosphoric acid cobalt nano-particle, Gu Liquid is separated, deionized water washing solid 2 times, and a kind of cobalt phosphate auxiliary silver phosphate photocatalyst is made in 75 DEG C of drying.
Aid in silver phosphate photocatalyst 0.3g to be added to the gold orange 7 that 500mL concentration is 30mg/L obtained cobalt phosphate to give up In water, under the irradiation of 300w Metal halogen lamps, 30min is reacted, percent of decolourization is 97.4%, after catalyst separation under the same conditions again Recycling four times, percent of decolourization is respectively 97.1%, 96.7%, 96.5%, 96.2%.
For identical waste water under the same conditions, the degradation efficiency of pure phosphoric acid silver is 89.2%, in phase after separation Reused four times with conditions of, percent of decolourization is respectively 87.5%, 83.2%, 77.6%, 70.5%.
By under the auxiliary of cobalt phosphate, the efficiency and stability of silver phosphate catalyst have large increase.
Embodiment 3
24mmol silver nitrates are weighed, 20mmol/L silver nitrate solution is configured to, 8mmol disodium hydrogen phosphates are weighed, configured Into 20mmol/L disodium phosphate soln;Both the above solution is mixed under 400 revs/min of rotating speed, yellow green is formed Colloid substance, persistently stirs 4h, disodium hydrogen phosphate and nitric acid silver reaction in whipping process, generates phosphoric acid silver colloid;By phosphoric acid Silver colloid is placed in pellicle bag, with water washing is distilled 4 times, gets rid of dissociated ion, then the phosphoric acid silver colloid is added to 60mL concentration is in 2mol/L cobalt nitrate solution, soaks 3 days, in silver orthophosphate particle surface formation phosphoric acid cobalt nano-particle, Gu Liquid is separated, deionized water washing solid 3 times, and a kind of cobalt phosphate auxiliary silver phosphate photocatalyst is made in 95 DEG C of drying.
Silver phosphate photocatalyst 0.3g is aided in be added to the rose red b that 500mL concentration is 30mg/L obtained cobalt phosphate In waste water, under the irradiation of 300w Metal halogen lamps, 30min is reacted, percent of decolourization is 98.1%, can be reused after catalyst separation.

Claims (1)

1. a kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst, it is characterized in that in turn including the following steps:
1) 20~24mmol silver nitrates are weighed, 20mmol/L silver nitrate solution is configured to, 6.6~8mmol phosphoric acid hydrogen two is weighed Sodium, is configured to 20mmol/L disodium phosphate soln;
2) both the above solution is mixed under 350~400 revs/min of rotating speed, forms yellow green colloid substance, lasting stirring 3~4h, disodium hydrogen phosphate and nitric acid silver reaction in whipping process generate phosphoric acid silver colloid;
3) phosphoric acid silver colloid is placed in pellicle bag, with distillation water washing 3~4 times, gets rid of dissociated ion, then by the phosphoric acid Silver colloid is added in the cobalt nitrate solution that 60~80mL concentration is 1~2mol/L, is soaked 1~3 day, in silver orthophosphate particle surface Phosphoric acid cobalt nano-particle is formed, a kind of phosphoric acid is made in separation of solid and liquid, deionized water washing solid 2~3 times, 75~105 DEG C of drying Cobalt aids in silver phosphate photocatalyst.
CN201710201102.3A 2017-03-30 2017-03-30 A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst Pending CN107096554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710201102.3A CN107096554A (en) 2017-03-30 2017-03-30 A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710201102.3A CN107096554A (en) 2017-03-30 2017-03-30 A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst

Publications (1)

Publication Number Publication Date
CN107096554A true CN107096554A (en) 2017-08-29

Family

ID=59675732

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710201102.3A Pending CN107096554A (en) 2017-03-30 2017-03-30 A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst

Country Status (1)

Country Link
CN (1) CN107096554A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000042415A (en) * 1998-08-04 2000-02-15 Nissan Motor Co Ltd Catalyst for exhaust gas purification using hydrocarbon reforming material
CN104014355A (en) * 2014-06-19 2014-09-03 中国矿业大学 Preparation method of visible-light catalyst
CN105170166A (en) * 2015-09-21 2015-12-23 天津工业大学 Cobalt/silver phosphate photocatalytic material and synthesizing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000042415A (en) * 1998-08-04 2000-02-15 Nissan Motor Co Ltd Catalyst for exhaust gas purification using hydrocarbon reforming material
CN104014355A (en) * 2014-06-19 2014-09-03 中国矿业大学 Preparation method of visible-light catalyst
CN105170166A (en) * 2015-09-21 2015-12-23 天津工业大学 Cobalt/silver phosphate photocatalytic material and synthesizing method thereof

Similar Documents

Publication Publication Date Title
CN104998660B (en) A kind of stannic disulphide nano slice loads the preparation method of tin dioxide nanocrystal composite nano materials
CN108311164B (en) Iron modified photocatalytic material and preparation method and application thereof
CN103990481B (en) A kind of preparation method of silver metavanadate/silver/silver orthophosphate composite catalyst
CN108993604B (en) High visible light activity AgIn5S8/UIO-66-NH2Composite material and preparation method and application thereof
CN104801328B (en) Method for preparing TiO2/g-C3N4 composite photocatalyst at low temperature
CN109939643A (en) α-Fe2O3Adulterate the preparation method and applications of charcoal
CN103990478B (en) A kind of preparation method of support type silver phosphate photocatalyst
CN112337490A (en) Preparation of Mn-FeOCl material and application method of Mn-FeOCl material in catalytic degradation of malachite green in water
CN102600870B (en) Loaded type silver phosphate/polyphosphoric silver/silver chloride compound water treatment photo-catalyst and preparation method thereof
CN106984346A (en) A kind of preparation method of silver orthophosphate compound phosphoric acid bismuth photochemical catalyst
Zhu et al. Heterogeneous activation of persulfate by Bi2MoO6–CuS composite for efficient degradation of orange II under visible light
Li et al. Constructing heterojunction interface of Co3O4/TiO2 for efficiently accelerating acetaminophen degradation via photocatalytic activation of sulfite
CN103721713A (en) Three-phase composite visible-light-driven photocatalyst capable of efficiently degrading dyes
CN106881122A (en) A kind of silver orthophosphate loads the preparation method of trbasic zinc phosphate photochemical catalyst
CN107096553A (en) A kind of silver orthophosphate loads the preparation method of cobalt phosphate/silver chlorate photochemical catalyst
CN102989446B (en) Preparation method of F-MnTiO3
CN106984311A (en) A kind of silver metavanadate is combined the preparation method of the silver-colored photochemical catalyst of wolframic acid
CN103990476B (en) A kind of preparation method of sulfur doping silver phosphate catalyst
CN106944109A (en) A kind of preparation method of silver orthophosphate compound phosphoric acid iron photochemical catalyst
CN107096549A (en) A kind of preparation method of the compound silver bromide photochemical catalyst of wolframic acid silver
CN103480402B (en) Preparation method of copper doped silver phosphate catalyst
CN106964382A (en) A kind of preparation method of the silver-colored photochemical catalyst of zinc sulphide compound phosphoric acid
CN104826639A (en) Silver phosphate/reduction graphene/titanium dioxide nanometer composite material and preparation method thereof
CN105561969A (en) Preparation and application of porous TixSn1-xO2 solid solution microspheres
CN107096554A (en) A kind of cobalt phosphate aids in the preparation method of silver phosphate photocatalyst

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170829