CN105854912A - BiPO4-WO3 composite photocatalyst and preparation method thereof - Google Patents

BiPO4-WO3 composite photocatalyst and preparation method thereof Download PDF

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Publication number
CN105854912A
CN105854912A CN201610235972.8A CN201610235972A CN105854912A CN 105854912 A CN105854912 A CN 105854912A CN 201610235972 A CN201610235972 A CN 201610235972A CN 105854912 A CN105854912 A CN 105854912A
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mixed solution
bipo
hydrothermal reaction
catalyst
bismuth nitrate
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刘玉民
张鹏
吕华
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Henan Normal University
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Henan Normal 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
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14Phosphorus; Compounds thereof
    • B01J27/186Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/188Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a BiPO4-WO3 composite photocatalyst and a preparation method thereof, and belongs to the technical field of inorganic environment-friendly photocatalysis materials. According to the technical scheme, the preparation method of the BiPO4-WO3 composite photocatalyst comprises the steps that 1, sodium tungstate and sodium chloride are added into deionized water according to the molar ratio of 1:1, the pH value of the mixed solution is adjusted with hydrochloric acid to range from 0.5 to 1 and transferred into a hydrothermal reaction still, the hydrothermal reaction still is placed in a microwave digestion instrument, a microwave reaction is carried out for 10 min to 30 min at the temperature of 180 DEG C, cooling, washing and drying are carried out after the reaction is finished, and WO3 powder is obtained; 2, a bismuth nitrate water solution is prepared, sodium dihydrogen phosphate and the WO3 powder are added to form a mixed solution; 3, the mixed solution obtained in the step 2 is stirred for 1 h at room temperature and then transferred into the hydrothermal reaction still, the hydrothermal reaction still is placed in the microwave digestion instrument, a microwave reaction is carried out for 10 min to 30 min at the temperature of 180 DEG C, centrifugation, washing and drying are carried out after the reaction is finished, and the BiPO4-WO3 composite photocatalyst is prepared. According to the prepared BiPO4-WO3 composite photocatalyst, the utilization rate of sunlight and photocatalytic activity are effectively increased.

Description

A kind of BiPO4-WO3Composite photo-catalyst and preparation method thereof
Technical field
The invention belongs to inorganic environment-friendly catalysis material technical field, be specifically related to a kind of BiPO4-WO3Composite photo-catalyst and preparation method thereof.
Background technology
In recent years, photocatalysis oxidation technique processes organic pollution owing to possessing that ability is strong, efficiency is high and the advantage such as non-secondary pollution, obtains the widely studied of scholars in Environmental Studies field.Photocatalysis oxidation technique mainly utilizes and produces the hydroxyl radical free radical with high activity and high oxidative, organic pollution carries out oxidation removal, thus reaches the purpose being effectively treated sewage.
In numerous photochemical catalysts, BiPO4As a kind of oxysalt, i.e. receive much concern because of the photocatalysis performance of its brilliance since being found.But, ultraviolet light can only be absorbed owing to its wider band gap magnitude (3.83eV) determines it and cause the utilization rate of light the highest, its light induced electron and hole the most compound, it is greatly reduced photocatalysis efficiency, thus hinders its application industrially.As a kind of important N-shaped visible-light photocatalyst, WO3Due to the energy gap that it is narrower, attract sizable concern.But, the most still there is no pertinent literature about BiPO4-WO3The report of composite photo-catalyst.
Summary of the invention
Present invention solves the technical problem that and there is provided the BiPO that a kind of photo-quantum efficiency is high, solar energy utilization ratio is high and photocatalytic activity is good4-WO3Composite photo-catalyst.
Another technical problem that the present invention solves there is provided the BiPO of a kind of simple and convenient operation4-WO3The preparation method of composite photo-catalyst.
The present invention solves that above-mentioned technical problem adopts the following technical scheme that, a kind of BiPO4-WO3The preparation method of composite photo-catalyst, it is characterized in that comprising the following steps: sodium tungstate and sodium chloride are joined the mixed solution being made into sodium tungstate in deionized water with sodium chloride by (1) in molar ratio for 1:1, after stirring 30min, the pH value with hydrochloric acid regulation mixed solution is 0.5-1, it is transferred to hydrothermal reaction kettle after continuing stirring 30min, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 10-30min in microwave dissolver, question response terminate after through cooling down, wash, being dried to obtain WO3Powder;(2) aqueous bismuth nitrate solution is prepared with bismuth nitrate and deionized water for raw material, the WO that addition sodium dihydrogen phosphate and step (1) obtain in aqueous bismuth nitrate solution under agitation3Powder forms mixed solution, and wherein added sodium dihydrogen phosphate is 1:1 with the mol ratio of bismuth nitrate, added WO3Powder is 1-10:1 with the mol ratio of bismuth nitrate;(3) it is transferred to hydrothermal reaction kettle after mixed solution stirring 1h step (2) obtained at ambient temperature, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 10-30min in microwave dissolver, question response terminate to be cooled to normal temperature after through being centrifuged, washing, be dried prepare BiPO4-WO3Composite photo-catalyst.
Further preferably, the sodium tungstate of step (1) is 0.05-0.2mol/L with the molar concentration of sodium tungstate in the mixed solution of sodium chloride.
Further preferably, the molar concentration of the aqueous bismuth nitrate solution of step (2) is 0.1-0.5mol/L.
BiPO of the present invention4-WO3Composite photo-catalyst, prepares according to the method described above.
The present invention compared with prior art has the advantages that
1, the present invention is in order to improve BiPO4Spectral response range, by itself and the WO with ideal bandgap3It is combined mutually, utilizes the energy level difference between two kinds of semiconductors that photo-generated carrier can be made to be injected on the energy level of another kind of semiconductor by the energy level of a kind of semiconductive particles, make electric charge efficiently separate, be effectively increased BiPO4Solar energy utilization ratio and photo-quantum efficiency;
2、BiPO4Conduction band potential E of photochemical catalystCB=0.44eV, valence band electromotive force EVB=4.27eV, and WO3Conduction band potential E of photochemical catalystCB=0.41eV, valence band electromotive force EVB=3.18eV, at BiPO4-WO3In composite semiconductor, WO3Conduction band potential more negative, light induced electron is easily from the WO that energy level is low3Conduction band moves to the BiPO that energy level is high4On conduction band, BiPO4Valence band electromotive force corrigendum, photohole is easily from the BiPO that energy level is high4Valence band moves to the WO that energy level is low3In valence band, thus improve the separative efficiency of photogenerated charge, and then improve its photocatalysis performance;
3、WO3Forbidden band is narrower, can effectively expand BiPO4The photochemical catalyst utilization rate to visible ray, and then it is effectively improved utilization rate and the photocatalytic activity of sunshine.
Accompanying drawing explanation
Fig. 1 is under 300W Hg lamp irradiation, the BiPO that the embodiment of the present invention 2 prepares4-WO3Composite photo-catalyst and pure BiPO4Light urges the agent degraded correlation curve figure (operating condition: the amount of catalyst: 0.1g to rhodamine B;The mass concentration of rhodamine B: 5mg/L).
Detailed description of the invention
Being described in further details the foregoing of the present invention by the following examples, but this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to below example, all technology realized based on foregoing of the present invention belong to the scope of the present invention.
Embodiment 1
(1) sodium tungstate of 0.005 mol and the sodium chloride of 0.005 mol are joined constant volume in deionized water and forms sodium tungstate and the mixed solution of sodium chloride to 100mL, after stirring 30min, the pH value with hydrochloric acid regulation mixed solution is 0.5, it is transferred to hydrothermal reaction kettle after continuing stirring 30min, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 10min in microwave dissolver, question response terminate after through cooling down, wash, being dried to obtain WO3Powder;
(2) preparation molar concentration is the aqueous bismuth nitrate solution 100mL of 0.1mol/L, the WO obtained to sodium dihydrogen phosphate and the 0.01mol step (1) of aqueous bismuth nitrate solution addition 0.01mol under agitation3Powder;
(3) it is transferred to hydrothermal reaction kettle after mixed solution stirring 1h step (1) obtained at ambient temperature, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 10min in microwave dissolver, question response terminate to be cooled to normal temperature after through being centrifuged, washing, be dried to prepare there is the BiPO of high catalytic activity4-WO3Composite photo-catalyst.
Embodiment 2
(1) sodium tungstate of 0.01mol and the sodium chloride of 0.01mol are joined constant volume in deionized water and forms the mixed solution of sodium tungstate and sodium chloride to 100mL, after stirring 30min, the pH value with hydrochloric acid regulation mixed solution is 0.8, it is transferred to hydrothermal reaction kettle after continuing stirring 30min, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 20min in microwave dissolver, question response terminate after through cooling down, wash, being dried to obtain WO3Powder;
(2) preparation molar concentration is the aqueous bismuth nitrate solution 100mL of 0.2mol/L, the WO obtained to sodium dihydrogen phosphate and the 0.1mol step (1) of aqueous bismuth nitrate solution addition 0.02mol under agitation3Powder;
(3) it is transferred to hydrothermal reaction kettle after mixed solution stirring 1h step (2) obtained at ambient temperature, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 20min in microwave dissolver, question response terminate to be cooled to normal temperature after through being centrifuged, washing, be dried to prepare there is the BiPO of high catalytic activity4-WO3Composite photo-catalyst.
Fig. 1 is under 300W Hg lamp irradiation, the BiPO that the present embodiment prepares4-WO3Composite photo-catalyst and pure BiPO4Light urges the agent degraded correlation curve figure to rhodamine B, as seen from the figure under the irradiation of simulated visible light, after illumination 4h, pure BiPO4Photochemical catalyst is about 19% to the degradation rate of rhodamine B, and BiPO4-WO3Composite photo-catalyst can reach about 92% to the degradation rate of rhodamine B, shows the photocatalytic activity being remarkably reinforced.
Embodiment 3
(1) sodium tungstate of 0.02mol and the sodium chloride of 0.02mol are joined constant volume in deionized water and forms sodium tungstate and the mixed solution of sodium chloride to 100mL, after stirring 30min, the pH value with hydrochloric acid regulation mixed solution is 1.0, it is transferred to hydrothermal reaction kettle after continuing stirring 30min, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 30min in microwave dissolver, question response terminate after through cooling down, wash, being dried to obtain WO3Powder;
(2) preparation molar concentration is the aqueous bismuth nitrate solution 100mL of 0.5mol/L, the WO obtained to sodium dihydrogen phosphate and the 0.5mol step (1) of aqueous bismuth nitrate solution addition 0.05mol under agitation3Powder;
(3) it is transferred to hydrothermal reaction kettle after mixed solution stirring 1h step (2) obtained at ambient temperature, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 30min in microwave dissolver, question response terminate to be cooled to normal temperature after through being centrifuged, washing, be dried to prepare there is the BiPO of high catalytic activity4-WO3Composite photo-catalyst.
Embodiment above describes the general principle of the present invention, principal character and advantage; skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and specification; under the scope without departing from the principle of the invention; the present invention also has various changes and modifications, and these changes and improvements each fall within the scope of protection of the invention.

Claims (4)

1. a BiPO4-WO3The preparation method of composite photo-catalyst, it is characterized in that comprising the following steps: sodium tungstate and sodium chloride are joined the mixed solution being made into sodium tungstate in deionized water with sodium chloride by (1) in molar ratio for 1:1, after stirring 30min, the pH value with hydrochloric acid regulation mixed solution is 0.5-1, it is transferred to hydrothermal reaction kettle after continuing stirring 30min, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 10-30min in microwave dissolver, question response terminate after through cooling down, wash, being dried to obtain WO3Powder;(2) aqueous bismuth nitrate solution is prepared with bismuth nitrate and deionized water for raw material, the WO that addition sodium dihydrogen phosphate and step (1) obtain in aqueous bismuth nitrate solution under agitation3Powder forms mixed solution, and wherein added sodium dihydrogen phosphate is 1:1 with the mol ratio of bismuth nitrate, added WO3Powder is 1-10:1 with the mol ratio of bismuth nitrate;(3) it is transferred to hydrothermal reaction kettle after mixed solution stirring 1h step (2) obtained at ambient temperature, then hydrothermal reaction kettle is put in 180 DEG C of microwave reaction 10-30min in microwave dissolver, question response terminate to be cooled to normal temperature after through being centrifuged, washing, be dried prepare BiPO4-WO3Composite photo-catalyst.
BiPO the most according to claim 14-WO3The preparation method of composite photo-catalyst, it is characterised in that: the sodium tungstate of step (1) is 0.05-0.2mol/L with the molar concentration of sodium tungstate in the mixed solution of sodium chloride.
BiPO the most according to claim 14-WO3The preparation method of composite photo-catalyst, it is characterised in that: the molar concentration of the aqueous bismuth nitrate solution of step (2) is 0.1-0.5mol/L.
4. a BiPO4-WO3Composite photo-catalyst, it is characterised in that be to prepare according to the method described in any one in claim 1-3.
CN201610235972.8A 2016-04-18 2016-04-18 BiPO4-WO3 composite photocatalyst and preparation method thereof Pending CN105854912A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106984346A (en) * 2017-03-30 2017-07-28 常州大学 A kind of preparation method of silver orthophosphate compound phosphoric acid bismuth photochemical catalyst
CN107597155A (en) * 2017-09-27 2018-01-19 大连民族大学 A kind of one pot process has visible light-responded photochemical catalyst BiPO4/WO3The preparation method of nanometer sheet
CN110743584A (en) * 2019-10-14 2020-02-04 东北大学秦皇岛分校 WO (WO)3Preparation and application of modified BiPO4 photocatalyst
CN112121830A (en) * 2020-09-18 2020-12-25 江苏大学 Preparation method and application of silver phosphate/tungsten trioxide core-shell nano photocatalytic composite material
CN114392734A (en) * 2021-12-29 2022-04-26 北京工业大学 Tungsten oxide composite material and preparation method and application thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110130130A (en) * 2010-05-27 2011-12-05 금호석유화학 주식회사 Multi-component metal oxide catalysts containing a bipo4, preparing method thereof and preparing method of 1,3-butadiene using the same
CN104128194A (en) * 2014-07-25 2014-11-05 浙江工商大学 p-n-type Bi2O3/BiPO4 heterostructure visible light-response photocatalytic film material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110130130A (en) * 2010-05-27 2011-12-05 금호석유화학 주식회사 Multi-component metal oxide catalysts containing a bipo4, preparing method thereof and preparing method of 1,3-butadiene using the same
CN104128194A (en) * 2014-07-25 2014-11-05 浙江工商大学 p-n-type Bi2O3/BiPO4 heterostructure visible light-response photocatalytic film material and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GUANGFANG LI等: "Microwave synthesis of BiPO4 nanostructures and their morphology-dependent photocatalytic performances", 《JOURNAL OF COLLOID AND INTERFACE SCIENCE》 *
张昭: "WO3/BiVO4复合光催化剂的制备及其可见光光催化性能研究", 《中国优秀硕士学位论文全文数据库(电子期刊)》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106984346A (en) * 2017-03-30 2017-07-28 常州大学 A kind of preparation method of silver orthophosphate compound phosphoric acid bismuth photochemical catalyst
CN107597155A (en) * 2017-09-27 2018-01-19 大连民族大学 A kind of one pot process has visible light-responded photochemical catalyst BiPO4/WO3The preparation method of nanometer sheet
CN110743584A (en) * 2019-10-14 2020-02-04 东北大学秦皇岛分校 WO (WO)3Preparation and application of modified BiPO4 photocatalyst
CN110743584B (en) * 2019-10-14 2022-03-29 东北大学秦皇岛分校 WO (WO)3Modified BiPO4Preparation method and application of photocatalyst
CN112121830A (en) * 2020-09-18 2020-12-25 江苏大学 Preparation method and application of silver phosphate/tungsten trioxide core-shell nano photocatalytic composite material
CN114392734A (en) * 2021-12-29 2022-04-26 北京工业大学 Tungsten oxide composite material and preparation method and application thereof
CN114392734B (en) * 2021-12-29 2024-01-30 北京工业大学 Tungsten oxide composite material and preparation method and application thereof

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Application publication date: 20160817