Visible light responding selenium-doped sulphide photocatalyst and preparation method thereof

A technology of photocatalysts and sulfides, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as photoerosion and instability

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, many studies have shown that many narrow-bandgap semiconductors often show instability under the irradiation of ultraviolet-visible light, that is, photoerosion phenomenon.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Dissolve 0.01mol of bismuth chloride and 0.1mol of sodium sulfide in 50ml of hydrazine hydrate, then add 0.003mol of sodium selenosulfate, stir vigorously for 10min, transfer the above solution into a 100mL reactor, and crystallize at 180℃ After 12 hours, the reaction kettle was naturally cooled to room temperature after the reaction was completed, the obtained precipitate was washed with deionized water to neutrality, 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 to zinc chloride, and other conditions remain unchanged.

Embodiment approach 3

[0017] The bismuth chloride in Embodiment 1 is changed to cadmium chloride, and other conditions remain unchanged.

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PUM

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Abstract

The invention relates to a visible light responding sulphide photocatalyst and a preparation method thereof, belonging to the field of inorganic nano photocatalytic materials. The catalyst comprises selenium-doped nano-metal sulphide semi-conductors including zinc sulphide, cadmium sulphide and bismuthous sulphide. 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 present invention relates to a photocatalyst, in particular to a photocatalyst with visible light response. [0002] The present invention also relates to the preparation method of the above-mentioned catalyst. [0003] The present invention also relates to the use of the above-mentioned catalyst. Background technique [0004] In the 1970s, Japanese scientists Fujishima and Honda first discovered semiconductor TiO 2 It has the function of splitting water under ultraviolet light irradiation. Since then, semiconductor photocatalysis has become one of the most active interdisciplinary research fields. The use of photocatalytic degradation to eliminate organic pollutants is a new technology that has received increasing attention in recent years. Because of its huge potential in the advanced treatment of organic wastewater and environmental purification, photocatalytic degradation of organic pollutants has been People’s widespread concern, many organic compoun...

Claims

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Application Information

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