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A photocatalyst cu 3 vs 4 preparation method

A photocatalyst, CH4N2S technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of expensive reaction raw materials, harsh environmental conditions, expensive raw materials and equipment requirements, etc., to achieve reaction Mild conditions, good catalytic effect, and economical reaction raw materials

Active Publication Date: 2020-12-01
HENAN ACAD OF AGRI SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method raw material and equipment requirement are more expensive, and operation process is more complicated; After directly reacting the elements at high temperature, then react with 48mol.% NH at 300°C 4 The flux reaction of Cl and 52mol.% LiCl is mixed. This method requires higher temperature, and the reaction raw materials are more expensive, which is inconvenient for large-scale synthesis and application; in 2018, Kudo Akihiko et al. Copper sulfide (CuS) and vanadium sulfide (V 2 S 3 ) to prepare Cu 3 vs. 4 A large amount of synthesis of this method requires expensive funds; in 2018, Chen et al. (Materials Letters 211(2018) 179–182) reported a rapid hot-melt synthesis method. The reaction raw materials of this method include vanadium(III) acetylacetonate (870.7mg, 2.5mmol), copper (II) acetylacetonate (1570.6mg, 6mmol), oleylamine, sulfur (256.5mg, 8mmol), etc., the reaction environment is required to be carried out in argon protection, the environmental conditions of this method are harsh, and the raw material of oleylamine is expensive , The steps are cumbersome, and it is not convenient for large-dose synthesis

Method used

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  • A photocatalyst cu <sub>3</sub> vs <sub>4</sub> preparation method
  • A photocatalyst cu <sub>3</sub> vs <sub>4</sub> preparation method
  • A photocatalyst cu <sub>3</sub> vs <sub>4</sub> preparation method

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Embodiment 1

[0023] Embodiment 1 photocatalyst Cu 3 vs. 4 preparation of

[0024] 1) The amount of the substance weighed on a ten-thousandth balance is 3mmol copper chloride dihydrate (CuCl 2 2H 2 O), 1mmol ammonium metavanadate (NH 4 VO 3 ) and 20mmol thiourea (CH 4 N 2 S), the weighed raw materials were mixed and ground together in an agate mortar, and then added into a hydrothermal reaction kettle, and the reaction kettle was reacted at 230° C. for three days.

[0025] 2) Cool naturally after the reaction is over, wash the product in the kettle with distilled water: first wash the product in the inner lining with a small amount of distilled water, then take it out and place it in a beaker, wash it 3 times under stirring, stir and let it stand, take the solid in the lower layer and put it in the beaker at 60 Dry at ℃ to obtain the product.

[0026]3) After the product is dried, measure the quality of the product on a ten-thousandth balance and record it, that is, the actual outpu...

Embodiment 2

[0029] Embodiment 2 catalytic efficiency test

[0030] 1) Through the experiment of photocatalytic degradation MO dye, test the photocatalyst Cu prepared by the method of the present invention 3 vs. 4 It has a degradative effect on MO dyes, and the results show that the catalytic performance in the visible light region is better than that of titanium dioxide (P25), and it has good stability in dyes.

[0031] 2) The specific steps of the experiment are as follows:

[0032] The Cu that embodiment 1 makes 3 vs. 4 Take 25 mg and add it to 50 ml of MO dye with a concentration of 10 mg / L and PH=3 to form a mixed solution, and absorb it in the dark for 30 min to reach adsorption equilibrium, and then illuminate it for 5 h under a 125W ultraviolet high-pressure mercury lamp (filter figure 2 ) to calculate the degradation rate. by Cu 3 vs. 4 Catalyst P25 of the same quality and the blank group experimental result without catalyst are contrasted (such as figure 2 ), to analyze ...

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Abstract

The invention discloses a preparation method for a photocatalyst Cu3VS4. The method comprises the following steps: mixing copper chloride dihydrate (CuCl2.2H2O), ammonium metavanadate (NH4VO3) and thiourea (CH4N2S), carrying out grinding to realize uniform mixing, and transferring the obtained powder to a hydrothermal reaction kettle for a high-temperature reaction; and after the reaction, carrying out natural cooling, washing a product in the kettle with distilled water, then carrying out stirring and standing to separate a solid, and drying the solid at about 60 DEG C to obtain the photocatalyst Cu3VS4. The method is simple to operate and saves energy; and the produced photocatalyst has catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of catalysis and environmental protection, in particular to a photocatalyst Cu 3 vs. 4 method of preparation. Background technique [0002] At present, the biggest problem facing mankind is how to effectively deal with the increasing water pollution and pollutant degradation, especially in the degradation of toxic pollutants. Semiconductor photocatalytic advanced oxidation technology is one of the most promising methods. When photons with energy greater than or equal to the semiconductor band gap irradiate on the surface of the photocatalyst, electrons and holes will be generated, and the photocatalytic reaction can be realized by using the redox ability of electrons and holes. The use of photocatalysts in pollutant treatment has become increasingly widespread, and the preparation of efficient and stable photocatalysts has become the focus of research. For sulfide Cu 3 vs. 4 , the existing preparation m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04C02F1/30C02F101/30
CPCB01J27/04B01J35/004C02F1/30C02F2101/308C02F2305/10
Inventor 李园园林彩容
Owner HENAN ACAD OF AGRI SCI
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