A kind of gqds/ce-2mi composite photocatalytic bactericide and its preparation and application

Abstract

The invention discloses a GQDs / Ce‑2MI composite photocatalytic bactericide and its preparation and application. The preparation method comprises: step (1): subjecting starch suspension to hydrothermal reaction to obtain GQDs solution; step (2): making The GQDs solution prepared by Ce salt and step (1) is dispersed in water to obtain solution A; the GQDs solution prepared by 2-methylimidazole and step (1) is dispersed in water to obtain solution B; solution A and solution B Mix to obtain GQDs / Ce-2MI precursor solution; step (3): the GQDs / Ce-2MI precursor solution obtained in step (2) is successively left to stand, washed, vacuum-dried and ground to obtain GQDs / Ce-2MI composite catalyst of light. The preparation method of the invention is simple, and the cost is controllable; the prepared GQDs / Ce-2MI composite photocatalyst has high visible light responsiveness, excellent photocatalytic bactericidal activity, and good wastewater treatment effect.

Description

A kind of GQDs / Ce-2MI composite photocatalytic bactericide and its preparation and application technical field The present invention relates to photocatalytic material technical field, be specifically related to a kind of novel GQDs / Ce-2MI photocatalytic bactericide Preparation method and application in photocatalytic sterilization. Background technique Photocatalyst technology is a kind of advanced oxidation technology, can use light as driving force at room temperature, stimulate photocatalyst to produce [0002] The generated electron-hole destroys the bacterial structure and has a certain bactericidal effect. The core of photocatalytic technology in the field of sterilization is excellent Preparation and optimization of fungicides. The current research field of antibacterial materials has developed rapidly, but in terms of practical effects, Unsatisfactory, generally it is best to only reach about 70-80%, and accompanied by uncontrollable effects, causing seconda...

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Problems solved by technology

The current research field of antibacterial materials has developed rapidly, but in terms of actual effects, it is not satisfactory. Generally, it can only reach about 70-80%, and it is accompanied by problems such as uncontrollable effects and secondary pollution. Therefore, it is necessary to develop a material with excellent comprehensive performance, stronger antibacterial performance, stable performance and environmental friendliness.

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