ZnIn2S4 photocatalyst obtained by hydrothermal synthesis of ionic liquid microemulsion and preparation method of ZnIn2S4 photocatalyst

An ionic liquid, photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve the problems of large specific surface area, high catalytic activity, low catalytic activity, etc., to achieve high catalytic efficiency, preparation Simple method, convenient operation effect

Inactive Publication Date: 2015-04-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the ZnIn synthesized by existing preparation methods 2 S 4 The shortcoming that catalytic activity is low, the object of the present invention is to provide a kind of ionic liquid microemulsion heat synthesis ZnIn 2 S 4 Type photocatalyst method, large specific surface area, high catalytic activity

Method used

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  • ZnIn2S4 photocatalyst obtained by hydrothermal synthesis of ionic liquid microemulsion and preparation method of ZnIn2S4 photocatalyst
  • ZnIn2S4 photocatalyst obtained by hydrothermal synthesis of ionic liquid microemulsion and preparation method of ZnIn2S4 photocatalyst
  • ZnIn2S4 photocatalyst obtained by hydrothermal synthesis of ionic liquid microemulsion and preparation method of ZnIn2S4 photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Weigh raw materials according to the following weight percentages: zinc chloride 1%, indium nitrate 4.41%, thioacetamide 4.41%, surfactant octylphenyl polyoxyethylene ether 27%, ionic liquid 1-butyl-3 - Methylimidazolium hexafluorophosphate 8%, deionized water 55.18%.

[0039] 2) At 20°C, add thioacetamide to a mixture of ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate and surfactant octylphenylpolyoxyethylene ether and mix evenly to The stirring speed was 300 rpm, and the mixture was stirred for 5 minutes to obtain a clear and transparent mixture solution A.

[0040] 3) Under the condition of 20°C, fully dissolve zinc chloride and indium nitrate in deionized water, and stir at a stirring speed of 300 rpm for 5 minutes to obtain a clear and transparent mixture solution B.

[0041] 4) Transfer and mix solution A and solution B in a polytetrafluoroethylene-lined autoclave with a magnetic speed of 300 rpm and stir for 5 minutes to form a stable and uniform...

Embodiment 2

[0046] 1) Weigh raw materials according to the following weight percentages: zinc sulfide 0.01%, indium acetate 0.06%, thioacetamide 0.062%, surfactant cetyltrimethylammonium bromide 7.788%, ionic liquid 1-butyl- 3-methylimidazolium tetrafluoroborate 2%, deionized water 90%.

[0047] 2) Add thioacetamide to a mixture of ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate and surfactant cetyltrimethylammonium bromide at 50°C Evenly, stir at a stirring speed of 800 rpm for 15 minutes to obtain a clear and transparent mixture solution A.

[0048] 3) Under the condition of 50°C, fully dissolve zinc sulfide and indium acetate in deionized water, and stir at a stirring speed of 800 rpm for 15 minutes to obtain a clear and transparent mixture solution B.

[0049] 4) Transfer and mix solution A and solution B into a polytetrafluoroethylene-lined autoclave with a magnetic speed of 1200 rpm and stir for 10 minutes to form a stable and uniform microemulsion system.

[0050] 5) S...

Embodiment 3

[0054] 1) Weigh raw materials according to the following weight percentages: zinc nitrate 0.495%, indium chloride 0.736%, thioacetamide 1.0%, surfactant bis(2-ethylhexyl) succinate sodium sulfonate 31.3%, ionic liquid 1-butyl-3-methylimidazolium bromide 5.87%, deionized water 60.599%.

[0055] 2) Add thioacetamide to ionic liquid 1-butyl-3-methylimidazolium bromide and surfactant bis(2-ethylhexyl) sodium sulfosuccinate (AOT) at 60°C Mix evenly in the mixture, and stir at a stirring speed of 800 rpm for 15 minutes to obtain a clear and transparent mixture solution A.

[0056] 3) Under the condition of 60°C, fully dissolve zinc nitrate and indium chloride in deionized water, and stir at a stirring speed of 800 rpm for 15 minutes to obtain a clear and transparent mixture solution B.

[0057] 4) Transfer and mix solution A and solution B in a polytetrafluoroethylene-lined autoclave with a magnetic speed of 1200 rpm and stir for 15 minutes to form a stable and uniform microemulsio...

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Abstract

The invention discloses a preparation method of a ZnIn2S4 photocatalyst by hydrothermal synthesis of ionic liquid microemulsion. The preparation method comprises the following steps: (1) adding a sulfur source into the ionic liquid and a surfactant, heating, and stirring until the sulfur source is dissolved to obtain a mixture A; (2) fully dissolving a divalent zinc salt and a trivalent indium salt in deionized water to obtain a mixture B; (3) transferring and mixing the mixture A and the mixture B in an autoclave having polytetrafluoroethylene lining and uniformly stirring; (4) closing the autoclave, placing the autoclave at 50-90 DEG C and reacting for 4-24 hours and naturally cooling at room temperature to obtain a yellow precipitate; and (5) respectively washing the yellow precipitate with deionized water and anhydrous ethanol, transferring to a drying oven and drying overnight at 40-90 DEG C to obtain the final product. The preparation process is simple, rich in raw materials and low in cost, and the product has the advantages of large specific surface area, high catalytic activity and high hydrogen generation efficiency.

Description

technical field [0001] The present invention relates to ZnIn 2 S 4 Type photocatalyst and preparation method thereof, particularly relate to a kind of ionic liquid microemulsion heat synthesis ZnIn 2 S 4 Type photocatalyst and preparation method. Background technique [0002] The serious energy crisis and environmental problems in the 21st century have further raised the requirements of human beings for the safety, environmental protection and high efficiency of the energy used. As a high calorific value, renewable and clean energy, hydrogen energy has become the focus of world attention. The use of solar photocatalytic water splitting to produce hydrogen is considered to be one of the most promising methods to solve energy problems, and the key to photocatalytic hydrogen production is to develop efficient photocatalysts. Zn 2 S 4 It has attracted much attention because of its narrow band gap, ability to absorb visible light, good chemical stability and simple prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00B01J27/02
CPCB01J27/04C01G15/006
Inventor 陈砺张嘉熙孙婉纯邹晓梅聂诚杜惠嫦林斌王爱丽
Owner SOUTH CHINA UNIV OF TECH
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