Preparation method of particulate self-assembling spherical zinc-cadmium-sulfur solid solution material

Abstract

The invention discloses a preparation method of a particulate self-assembling spherical zinc-cadmium-sulfur solid solution material. The preparation method comprises the following steps: weighing CMC,preparing a solution, and then sequentially performing stirring and ultrasonic treatment to form a mixed solution A; weighing zinc acetate dihydrate and cadmium acetate dihydrate, adding the zinc acetate dihydrate and cadmium acetate dihydrate into the mixed solution A, and then sequentially performing stirring and ultrasonic treatment to form a mixed solution B; weighing thioacetamide as a sulfur source, and adding the thioacetamide into the mixed solution B; then sequentially performing stirring and ultrasonic treatment to form a mixed solution C; acidifying the mixed solution C with a HClsolution, and performing ultrasonic treatment to form a mixed solution D; adding the mixed solution D into a polytetrafluoroethylene lining, and performing a hydrothermal reaction; and after the reaction is completed, respectively performing centrifugal washing on the product through deionized water and ethanol for multiple times, and then performing drying and grinding to obtain powder of the required material.

Description

technical field [0001] The present invention relates to Zn 1-x Cd x The preparation method of S material specifically relates to a particle self-assembled spherical zinc cadmium sulfur solid solution (Zn 0.2 Cd 0.8 S) Preparation method of the material. Background technique [0002] Nowadays, with the development of science and technology industry, aerospace, construction and electronics, etc., the requirements for materials are getting higher and higher. Traditional materials cannot meet the requirements, and more and more functional materials and composite materials have been developed by leaps and bounds. . Ⅱ-Ⅵ compounds have attracted much attention due to their wide application prospects in semiconductor lasers, solid-state luminescence and solar cells, among which Zn 1-x Cd x As a novel photocatalytic material, S(0≤x≤1) solid solution material has been extensively studied due to its adjustable bandgap width and unique catalytic activity. [0003] Zn 1－x Cd x A...

AI Technical Summary

Problems solved by technology

[0005] Currently, Zn 0.2 Cd 0.8 The synthesis methods of S(x=0.2) materials mainly include: co-precipitation method (Xing C, Zhang Y, Yan W, et al.Band structure-controlled solid olution of d1-xZnxS photocatalyst for hydrogen production by water splitting[J].Int .J.Hydrogen Energ.,2006,31(14):2018-2024), microemulsion method (Chen D, Gao L.Microemulsion-mediated synthesis of cadmium zinc sulfide nanocrystals with composition-modulated optical properties[J].Solid State Commun. ,2005,133(3):145-150.), thermal decomposition method (Yu J, Yang B, Cheng B.Noble-metal-free carbon nanotube-Cd 0.1 Zn 0.9 S composites for highly visible-light photocatalytic H 2 -production performance[J].Nanoscale,2012,4(8):2670-2677.) Among them, the co-precipitation method has fast reaction speed, simple process and easy operation, and excellent product quality, but has higher requirements for temperature and higher energy consumption. Large, and the product is prone to sintering or melting, and the reaction is not easy to control

The microemulsion process is relatively simple to operate, and the device is simple to operate and the particles are uniform. However, a large amount of organic matter will be produced, which will have a certain impact on the environment, cause environmental pollution, and the reaction rate is difficult to control. It is also necessary to increase the treatment of reaction by-products , which increases the cost of the reaction

The thermal decomposition method is easy to operate and has a fast reaction rate, but it is easy to cause product agglomeration, the temperature required for the reaction is high, and the energy and cost required for production are relatively high.

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