Preparation method of MoS2 quantum dot loaded nano TiO2

Abstract

The invention discloses a preparation method of MoS2 quantum dot loaded nano TiO2, which applies chitosan to the reaction of nano titanium dioxide and molybdenum disulfide, so that the prepared MoS2@TiO2 nano material keeps good in-situ dispersion characteristic, and the catalytic efficiency of titanium dioxide in natural light is improved. According to the method disclosed by the invention, a MoS2 lamella is opened by using high-frequency and high-energy ultrasonic treatment, and MoS2 can be crushed at 110-140 DEG C, so that MoS2 small molecules subjected to fault crushing can be doped into nano titanium dioxide crystals. The preparation method of the MoS2 quantum dot loaded nano TiO2 is simple and convenient to operate, easy to implement, short in consumed time, low in consumption, low in cost, high in yield, good in repeatability and suitable for large-scale production or does not cause secondary pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing a heterostructure from titanium dioxide and semiconductor nanomaterials. Background technique [0002] Photocatalytic technology is a very effective technology to solve environmental pollution and energy crisis. Titanium dioxide (TiO 2 ) is an important inorganic photocatalytic material. Titanium dioxide has the advantages of high photocatalysis, high stability, and low toxicity. TiO 2 Under the irradiation of ultraviolet rays, photocatalytic reaction can occur, and organic matter can be decomposed into carbon dioxide and water, which can be used to remove organic matter, sterilize, disinfect, and treat sewage. At the same time, by TiO 2 The formed film has photocatalytically induced superhydrophilic properties, making it self-cleaning, easy to clean, waterproof and fog-proof, and has attracted widespread attention. However, since the p...

AI Technical Summary

Problems solved by technology

However, since the proportion of ultraviolet light energy in sunlight does not exceed 5%, and ordinary titanium dioxide requires relatively high-intensity ultraviolet light to exert an excellent catalytic effect, the catalytic rate of ordinary titanium dioxide using natural light is not high and cannot achieve ideal Disinfection, sterilization and self-cleaning

Theoretically, through the TiO 2 Metal / nonmetal ion doping, noble metal loading, structural heterojunction and other modification methods can make better use of sunlight and improve the catalytic efficiency of titanium dioxide under natural light. Molybdenum disulfide (MoS 2 ) is a graphene-like two-dimensional semiconductor nanomaterial. The combination of molybdenum disulfide and titanium dioxide is one of the focuses of research in this field. However, there is no one in the prior art that is simple to operate and suitable for large-scale production. Molybdenum dioxide heterostructure, and the heterostructure has excellent catalytic performance under natural light.

Images