Preparation method of nano cuprous oxide photocatalyst

Abstract

The invention discloses a preparation method of a nano cuprous oxide photocatalyst, the preparation method comprises the following steps: 1) sequentially adding a CuCl2 solution and a NaOH solution into a certain amount of deionized water; 2) adding surfactant SDS (sodium dodecyl sulfate) under vigorous stirring, performing ultrasonic treatment, adding NH2OH.HCl drop by drop, performing room temperature aging, centrifuging, washing and drying to obtain orange-yellow Cu2O powder. The nano cuprous oxide photocatalyst has a particle diameter of 200-300nm, and can absorb visible light of less than 600nm. Under simulate visible light source irradiation, a 4-chlorophenol degradation photocatalytic reaction is used for evaluation of the catalyst activity, and the nano cuprous oxide photocatalyst can remove about 90% of 4-chlorophenol (the initial concentration is 12.8mg / L) in water within 2 hours. The nano cuprous oxide prepared by the method is a low energy gap photocatalyst with a high solar utilization rate, is used for degradation of chlorophenol pollutants, and has very important practical significance.

Description

technical field [0001] The invention relates to a preparation method of a chemical preparation, in particular to a preparation method of a nanometer cuprous oxide photocatalyst which can be used for degrading 4-chlorophenol (4-CP) in water. Background technique [0002] Chlorophenols are widely used in anticorrosion, insecticide, etc., and are also important chemical raw materials, but they have a great impact on human hormones and immune system. Chlorophenol is a national priority control environmental pollutant, and its degradation research has always been a research hotspot in the field of pollutant treatment. Because the p electron of the chlorine atom in chlorophenol can be conjugated with the electron of the benzene ring, and the chlorine atom can inhibit the activity of benzene ring lyase, so the chlorophenol has strong anti-biodegradation ability [see: Wang Yanli 2009 Anhui Agricultural Science 37 14858], It is difficult to degrade efficiently with conventional wate...

AI Technical Summary

Problems solved by technology

At present, cuprous oxide has been used as a photocatalyst for the photocatalytic degradation of phenol, methylene blue and other substances [see: (a) Long Jinqiao, Li Yuancheng, Yang Hanyan 2004 Chemical Design 14 42; (b) Chen Jinyi, Liu Xiaoling, Li Changlun 2002 Central China Normal University Journal (Natural Science Edition) 36 200], nano-cuprous oxide used in the degradation of chlorophenol pollutants, especially the impact of nano-cuprous oxide morphology on photocatalytic efficiency has not been reported

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