Method for preparing ZnS mischcrystal photocatalyst

Abstract

The invention provides a method for preparing a ZnS sosoloid photocatalyst, which relates to a method for preparing a photocatalyst. The invention solves the problem of low hydrogen yield under visible light in the prior photocatalyst preparation by photolysis of H2O. The preparation method comprises: first, adding Zn (AC)2.2H2O and a III compound to pyridine to stir; secondly, adding thiacetamide to the mixture to stir; thirdly, dropping a transition metal salt pyridine solution to the mixture; fourthly, reacting at a temperature of between 120 and 240 DEG C for 8 to 48 hours, and cooling, washing and drying the reactant to obtain the ZnS sosoloid photocatalyst. The ZnS sosoloid photocatalyst prepared by the method has high hydrogen production velocity and good catalytic activity without carrying noble metals, such as Pt. The method has the advantages of low energy consumption, high visible light utilization ratio, simple preparation process and low cost.

Description

technical field

[0001] The invention relates to a preparation method of a photocatalyst. Background technique

[0002] Solar energy is a renewable and clean energy, but solar energy cannot be stored directly, nor can it be continuously supplied. Use solar energy to decompose water, convert solar energy with low density and strong dispersion into hydrogen energy, and then convert the generated H through fuel cells 2 and O 2 The electrochemical reaction is carried out to generate electricity; the product water can be used as a raw material for solar hydrogen production without any pollution to the environment. Since visible light accounts for about 43% of the total energy of sunlight, the development of new photocatalytic materials with visible light response and high catalytic activity is the key to utilizing solar energy and realizing photocatalytic water splitting to produce hydrogen. Solid solutions account for the majority of recently reported photocatalysts with excel...

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