A kind of cadmium indium selenide/zinc copper sulfide nanocomposite material and its preparation method and application

Abstract

The invention provides a cadmium indium selenide / zinc copper sulfide nanocomposite material, a preparation method thereof, and an application in photocatalytic hydrogen production. The preparation method of the cadmium indium selenide / zinc copper sulfide comprises the following steps: (1) utilizing a solvothermal method to synthesize ternary sulfide zinc copper sulfide; (2) synthesizing an aqueous phase cadmium indium selenide quantum dot; (3) combining The cadmium indium selenide / zinc copper sulfide is obtained by compounding the ternary sulfide zinc copper sulfide and the cadmium indium selenide quantum dot. In addition, the cadmium indium selenide / zinc copper sulfide prepared by the present invention is used as a photocatalytic hydrogen production material, and its hydrogen production effect is significantly improved compared with zinc copper sulfide and cadmium indium selenide quantum dots. The amount of catalytic hydrogen production can reach 4623.2 μmol / g, and the material can maintain good cycle stability in the process of photocatalytic hydrogen production.

Description

A kind of cadmium indium selenide / zinc copper sulfide nanocomposite material and its preparation method and application technical field The present invention relates to photocatalysis technical field, be specifically related to a kind of cadmium indium selenide / zinc copper sulfide nanocomposite material and The preparation method thereof, and the application of the cadmium indium selenide / zinc copper sulfide in photocatalytic hydrogen production. Background technique [0002] Photocatalytic water splitting has attracted extensive research as an environmentally friendly and sustainable hydrogen production method. glue Bulk II‑VI semiconductor quantum dots have good photostability, broad excitation spectrum and narrow emission due to their own quantum size effect. It is considered to be an ideal photocatalyst material, such as cadmium telluride, cadmium sulfide, cadmium selenide quantum dots, etc. with binary Compared with quantum dots, ternary quantum dots have greate...

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Problems solved by technology

[0005] In order to solve the problems of high recombination rate of photogenerated carriers and wide band gap when quantum dots and sulfides are used alone, the present invention provides a ternary sulfide zinc copper sulfide as the substrate, using the water phase ternary alloy quantum dot selenium The cadmium indium selenide / zinc copper sulfide nanocomposite material obtained by compounding cadmium indium selenide and zinc copper sulfide substrate, and the preparation method of the cadmium indium selenide / zinc copper sulfide nanocomposite material and its application in photocatalytic hydrogen production