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Visible light responding sulfur-doped selenide photocatalyst and preparation method thereof

A photocatalyst, sulfur-doped technology, applied to the use of the above-mentioned catalyst, the preparation of the above-mentioned catalyst, the field of photocatalysts with visible light response, can solve the problem that it is difficult to respond to visible light, etc.

Inactive Publication Date: 2011-01-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the band gap of most oxide semiconductors is relatively wide, and it is difficult to respond to the induction of visible light. Therefore, many people turn their attention to narrow band gap selenide semiconductors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Add 0.1mol of bismuth chloride, 0.001mol of sulfur powder and 0.1mol of selenium powder into 50ml of ethylenediamine, and after ultrasonication for 10min, transfer the above mixture into a 100mL reactor, crystallize at 180°C for 24 hours, and react After completion, the reactor was naturally cooled to room temperature, the obtained precipitate was washed with deionized water until neutral, and the obtained product was vacuum-dried at 80° C. for 3 hours to obtain the final product.

Embodiment approach 2

[0015] The bismuth chloride in embodiment 1 is changed into zinc chloride, and other conditions are unchanged.

Embodiment approach 3

[0017] The bismuth chloride in embodiment 1 is changed into cadmium chloride, and other conditions are unchanged.

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PUM

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Abstract

The invention relates to a visible light responding selenide photocatalyst and a preparation method thereof, belonging to the field of inorganic nano photocatalytic materials. The catalyst comprises sulfur-doped nano-metal selenide semi-conductors including zinc selenide, cadmium selenide and bismuthous selenide. The photocatalyst has photocatalytic activity in wider wavelength range and can treat toxic and harmful chemical substances through photodecomposition and purification under radiation of ultraviolet light, visible light or natural light.

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a photocatalyst with visible light response. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the use of the catalysts described above. Background technique [0004] In recent years, the research on the use of semiconductor photocatalysts to control environmental pollution has been greatly developed. The photocatalytic oxidation process using semiconductor oxides as catalysts has the advantages of mild reaction conditions, no secondary pollution, and the ability to directly use sunlight for oxidation reactions. It has become an ideal environmental pollution control technology and has shown great potential for application. . However, most oxide semiconductors have relatively wide band gaps, and it is difficult to respond to the induction of visible light. Therefore, many people turn their attention to na...

Claims

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Application Information

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IPC IPC(8): B01J27/057B01J37/34B01D53/86C02F1/30C02F1/58C02F1/62
CPCY02W10/37
Inventor 宋立民陈超
Owner TIANJIN POLYTECHNIC UNIV