Preparation method and application of non-noble metal copper indium sulphide/zinc indium sulphide compound photocatalyst

A non-precious metal, sulfur indium zinc technology, applied in the direction of physical/chemical process catalysts, non-metallic elements, chemical instruments and methods, etc., can solve the problem that noble metals are not suitable for large-scale production, unfavorable photogenerated charge transfer and separation, and reduce photocatalytic quantum Efficiency and other issues, to achieve the effect of improving photocatalytic performance, inhibiting recombination rate, and wide visible light response

Active Publication Date: 2019-01-22
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a single SInZn is not conducive to the transfer and separation of photogenerated charges, resulting in the recombination of photogenerated electrons and holes, which reduces the photocatalytic quantum efficiency.
In response to the above shortcomings, researchers have carried out a lot of research, such as: adjusting the morphology by changing the synthesis conditions, which has little effect; depositing an appropriate amount of noble metals on the semiconductor surface to capture photogenerated electrons and inhibit the recombination of photogenerated carriers. It is one of the effective methods to improve photocatalytic performance, but it is not suitable for large-scale production due to high preparation cost and limited reserves of precious metals (public number CN108620105A, public number CN106111053A, public number CN108404960A, public number CN108043436A)

Method used

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  • Preparation method and application of non-noble metal copper indium sulphide/zinc indium sulphide compound photocatalyst
  • Preparation method and application of non-noble metal copper indium sulphide/zinc indium sulphide compound photocatalyst
  • Preparation method and application of non-noble metal copper indium sulphide/zinc indium sulphide compound photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0022] A preparation method of non-noble metal sulfur indium copper / sulfur indium zinc composite photocatalyst with wide visible light response.

[0023] 2mmol zinc chloride, 4mmol indium chloride, and 16mmol thioacetamide were stirred in 40mL deionized water for 30 minutes to dissolve, and the aqueous solution was transferred to a 100mL stainless steel reactor lined with polytetrafluoroethylene, and reacted in an oven at 180°C for 18 hours. After cooling to room temperature, centrifuge and wash with deionized water 3 times with absolute ethanol and 1 time respectively, collect the precipitate and dry it in an oven at 80°C to obtain light yellow sulfur indium zinc powder.

[0024] Ultrasonicate 0.99mmol sulfur indium zinc powder in 40mL deionized water (frequency 45kHz) for 20 minutes, add 0.01mmol indium chloride, 0.01mmol cuprous chloride, 0.04mmol thioacetamide and stir evenly, transfer the suspension to 100mL A stainless steel reaction kettle lined with polytetrafluoroethy...

Embodiment 2

[0026] 2mmol zinc chloride, 4mmol indium chloride, and 16mmol thioacetamide were stirred in 40mL deionized water for 30 minutes to dissolve, and the aqueous solution was transferred to a 100mL stainless steel reactor lined with polytetrafluoroethylene, and reacted in an oven at 180°C for 18 hours. After cooling to room temperature, centrifuge and wash with deionized water 3 times with absolute ethanol and 1 time respectively, collect the precipitate and dry it in an oven at 80°C to obtain light yellow sulfur indium zinc powder.

[0027] Ultrasonicate 0.97mmol sulfur indium zinc powder in 40mL deionized water (frequency 45kHz) for 20 minutes, add 0.03mmol indium chloride, 0.03mmol cuprous chloride, 0.12mmol thioacetamide and stir evenly, transfer the suspension to 100mL A stainless steel reaction kettle lined with polytetrafluoroethylene was reacted in an oven at 180°C for 18 hours. After cooling to room temperature, it was washed with deionized water three times and anhydrous e...

Embodiment 3

[0029] 2mmol zinc chloride, 4mmol indium chloride, and 16mmol thioacetamide were stirred in 40mL deionized water for 30 minutes to dissolve, and the aqueous solution was transferred to a 100mL stainless steel reactor lined with polytetrafluoroethylene, and reacted in an oven at 180°C for 18 hours. After cooling to room temperature, centrifuge and wash with deionized water 3 times with absolute ethanol and 1 time respectively, collect the precipitate and dry it in an oven at 80°C to obtain light yellow sulfur indium zinc powder.

[0030] Ultrasonicate 0.95mmol sulfur indium zinc powder in 40mL deionized water (frequency 45kHz) for 20 minutes, add 0.05mmol indium chloride, 0.05mmol cuprous chloride, 0.20mmol thioacetamide and stir evenly, transfer the suspension to 100mL A stainless steel reaction kettle lined with polytetrafluoroethylene was reacted in an oven at 180°C for 18 hours. After cooling to room temperature, it was washed with deionized water three times and anhydrous e...

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Abstract

The invention belongs to the field of photocatalytic materials, and provides a non-noble metal copper indium sulphide / zinc indium sulphide compound photocatalyst with a wide visible-light response range, high photocatalytic activity and stability and a preparation method and application in visible-light response photocatalysis hydrogen production thereof. Firstly, a mixed aqueous solution of zincchloride, indium chloride and thioacetamide is subjected to high-temperature hydrothermal reaction to prepare zinc indium sulphide powder; then the zinc indium sulphide powder is dispersed in water through ultrasound, a mixture, indium chloride, cuprous chloride and thioacetamide are mixed, and through high-temperature hydrothermal reaction, the copper indium sulphide / zinc indium sulphide compoundphotocatalyst is prepared. The photocatalyst does not contain noble metal, the cost is lower, and the synthesis method is simple, so that the photocatalyst has wide application prospects in the fieldof visible-light drive photocatalysis.

Description

Technical field: [0001] The invention relates to related technical fields such as inorganic chemistry, clean energy conversion materials, and photocatalytic materials, and in particular to a preparation method and application of a sulfur indium copper / sulfur indium zinc composite photocatalyst. Background technique: [0002] In the 21st century, the energy crisis and environmental pollution have become two major problems plaguing mankind. The development of non-polluting, renewable, low-cost, and wide-source green new energy is a huge challenge facing the development of the world today. Based on the advantages of environmental friendliness, abundant resources, freedom from transportation, and inexhaustible supply, solar energy is the most ideal energy source in the future. Semiconductor photocatalysts can use solar energy to decompose water into clean energy hydrogen, which is burned to release energy and generate water. This process is one of the most ideal ways to utilize...

Claims

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Application Information

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IPC IPC(8): B01J27/04C01B3/02
CPCC01B3/02B01J27/04C01B2203/1076C01B2203/0277B01J35/39
Inventor 彭彦华郭欣蕾耿梦洁于建强张妍
Owner QINGDAO UNIV
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