Indium sulfide mesoporous hollow microsphere photocatalyst and preparation method and use thereof

Abstract

The invention belongs to the technical field of nanomaterial synthesis. It uses a simple and rapid hydrothermal method to synthesize a carbon quantum dot modified indium sulfide (β-In2S3) mesoporous hollow microsphere photocatalyst in one step, and dissolves indium chloride and L-cysteine ​​in distilled water and stir to obtain solution D; add carbon quantum dots to solution D and stir to obtain solution E; transfer solution E to a polytetrafluoroethylene-lined reactor, put it in an oven, and react at 150°C for 24 hours; wait After natural cooling to room temperature, centrifuge to obtain a dark red solid, which is washed and dried under vacuum to obtain a sample. Can be used to degrade methyl orange dye under visible light.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and uses a simple and rapid hydrothermal method to synthesize carbon quantum dot-modified indium sulfide (β-Indium sulfide) in one step. 2 S 3 ) mesoporous hollow microsphere photocatalyst, which can be used to degrade methyl orange dye under visible light. Background technique [0002] In recent decades, modern industry has developed rapidly, so the energy crisis and environmental pollution faced by the world are very severe; and photocatalytic technology has the characteristics of high efficiency and environmental friendliness, so it provides a rational use of energy and environmental pollution control for environmental protection. ideal method. [0003] Indium sulfide is a photocatalyst with visible light activity. There are mainly three crystal systems α-In 2 S 3 , β-In 2 S 3 and γ-In 2 S 3 ; Among them, β-In 2 S 3 and the other two structures of In 2 S 3 Compared w...

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Problems solved by technology

[0005] But pure β-In 2 S 3 It also has serious defects: electron-hole recombination is rapid. In the process of photocatalytic degradation, if a large number of electron-hole recombination, O 2 - The output will be greatly reduced, and the photocatalytic degradation efficiency of the catalyst will be greatly affected; in order to solve this shortcoming, people have also done a lot of work, such as the β-In 2 S 3 with C 3 N 4 、 Bi 2 S 3 、InVO 4 , RGO and other materials to form a heterojunction or adopt methods such as Au, Ag noble metal loading to improve its photocatalytic activity, but these methods have defects such as expensive material synthesis and complicated synthesis methods; the present invention adopts a simple synthesis and cheap material , a new type of carbon material with stable performance, carbon quantum dots (CQDs) modified β-In 2 S 3 , thereby improving its photocatalytic activity and chemical stability

[0006] So far, no one has used the hydrothermal method to synthesize carbon quantum dot-modified hollow microsphere nanomaterials.

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