Preparation method of one-dimensional CdS nanorod/three-dimensional multilayer Ti3C2 composite photocatalyst

Abstract

The invention discloses a preparation method of a one-dimensional CdS nanorod / three-dimensional multilayer Ti3C2 composite photocatalyst, which comprises the following steps: (1) adding Ti3AlC2 powder into a hydrofluoric acid solution, and carrying out constant-temperature reaction for 20-28 hours under magnetic stirring; (2) repeatedly washing the obtained material until the pH value is 7; (3) preparing a plurality of layers of Ti3C2 powder; (4) preparing a Cd < 2 + > / Ti3C2 mixed solution; (5) dissolving thiourea into an ethylenediamine solution, uniformly mixing to obtain thiourea / ethylenediamine, adding the thiourea / ethylenediamine into the Cd < 2 + > / Ti3C2 mixed solution prepared in the step (5), and uniformly mixing; and (6) pouring the mixed solution prepared in the step (5) into a reactor, carrying out hydrothermal reaction, and then sequentially carrying out cooling, centrifugal washing and vacuum drying to obtain the CdS / Ti3C2 catalyst. The three-dimensional multilayer Ti3C2 is prepared through a chemical etching method, the CdS nanorod grows in situ and is loaded on the three-dimensional multilayer Ti3C2 through a hydrothermal solvent self-assembly synthesis method, the one-dimensional CdS nanorod / three-dimensional multilayer Ti3C2 composite photocatalyst is obtained, and the preparation method is easy to operate, high in quality and good in repeatability.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst preparation, in particular to a one-dimensional CdS nanorod / three-dimensional multilayer Ti 3 C 2 Preparation method of composite photocatalyst. Background technique [0002] In order to control pollution, protect the environment, and achieve sustainable development, the development of clean energy has attracted much attention in recent years, and hydrogen production through photocatalytic splitting of water is a promising method to alleviate the energy and environmental crisis. [0003] Since graphene was successfully prepared in 2004, two-dimensional layered materials have gradually become one of the research hotspots in materials science. In 2011, a new type of two-dimensional transition metal carbon / nitrogen compound, MXenes, was successfully prepared, and has been gradually applied in lithium-ion batteries, supercapacitors, catalysis and other fields in recent years. MXenes are a nov...

AI Technical Summary

Problems solved by technology

[0006] However, CdS, as the main material of photocatalysis, still has some drawbacks, which limit the further application and development of CdS.

For example, CdS is prone to photocorrosion and loses reactivity

In addition, the easy aggregation of CdS nanoparticles is the limitation of H 2 Another disadvantage of yield

This is because the agglomeration of catalyst particles will inevitably reduce the effective catalytic specific surface area, and will accelerate the polymerization of photogenerated electrons and holes generated in the photocatalytic process, greatly reducing the catalytic activity.

Images