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Zinc-cadmium sulfide photocatalyst with visible light response and preparation method thereof

A photocatalyst, zinc cadmium sulfide technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low photocatalytic quantum efficiency of cadmium sulfide

Inactive Publication Date: 2009-12-02
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This patent combines the advantages of cadmium sulfide and zinc sulfide, and adopts the co-precipitation method to prepare the ternary bimetallic sulfide zinc cadmium sulfide to solve the problem of low photocatalytic quantum efficiency of cadmium sulfide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] Dissolve 0.003mol of zinc acetate and 0.003mol of cadmium chloride in 41.67ml of ethylene glycol, stir evenly, transfer to a 250ml three-necked flask, and heat up to 100°C; then dissolve 0.006mol of sodium sulfide in 20.34ml of Add the sodium sulfide solution to the zinc-cadmium solution dropwise in ethylene glycol. After the dropwise addition, raise the temperature to 120°C and keep it for 60 minutes. Finally, collect the obtained precipitate, filter it with suction, wash it with distilled water for several times, and place it in the The catalyst was obtained by vacuum drying at 60°C for 12 hours.

Embodiment approach 2

[0021] The sodium sulfide in embodiment 1 is changed into thioacetamide, and other conditions are unchanged.

Embodiment approach 3

[0023] The sodium sulfide in embodiment 1 is changed into thiourea, and other conditions are unchanged.

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Abstract

The invention relates to a zinc-cadmium sulfide photocatalyst nanometer material with visible light response and a preparation method thereof, and belongs to the field of inorganic material preparation. The catalyst consists of zinc-cadmium sulfide, and has good visible light absorption performance and excellent activity of degrading organic pollutant by visible light. The photocatalyst and the method have the characteristics of low cost, simple preparation process and easy industrialized production.

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, people have done a lot of research on the photocatalytic oxidation reaction activity of nanometer-sized semiconductor materials, but the quantum efficiency of this photocatalytic reaction is extremely low due to the rapid recombination of photogenerated charges. Cadmium sulfide is a very important semiconductor material with visible light response performance, and its forbidden band width is only about 2.42eV, which also makes it able to absorb and utilize solar energy efficiently. In the past few decades, cadmium sulfide has been widely used in the research of photocatalytic water splitting to produce hydrogen and photocata...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J37/03B01D53/86B01D53/44B01D53/64C02F1/30C02F1/32C02F1/58C02F1/62C02F101/30C02F101/20
CPCY02W10/37
Inventor 宋立民
Owner TIANJIN POLYTECHNIC UNIV
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