A novel“Snowflake”--rGO-CuO for ultrasonic degradation of rhodamine and methyl orange  

作　　者：Yitong Wang Yuhua Wang Zuzhao Xiong Xifei Li 

机构地区：[1]Hubei Province Key Laboratory of Science in Metallurgical Process,Wuhan University of Science and Technology,Wuhan,430081,China [2]Department of Engineering and Technology,Wuhan College of Foreign Languages&Foreign Affairs,Wuhan,430070,China [3]Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation,School of Materials Science and Engineering,Xi'an University of Technology,Xi'an,710048,China

出　　处：《Nano Materials Science》2024年第3期365-373,共9页纳米材料科学（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.11375136)。

摘　　要：Graphene-doped CuO(rGO-CuO)nanocomposites with flower shapes were prepared by an improved solvothermal method.The samples were characterized by X-ray diffraction,X-ray photoelectron spectroscopy and UV–visible spectroscopy.The active species in the degradation reaction of rGO-CuO composites under ultrasonic irradiation were detected by electron paramagnetic resonance.On the basis of comparative experiments,the photodegradation mechanisms of two typical dyes,Rhodamine B(Rh B)and methyl orange(MO),were proposed.The results demonstrated that the doped CuO could improve the degradation efficiency.The catalytic degradation efficiency of rGO-CuO(2:1)to rhodamine B(RhB)and methyl orange(MO)reached 90%and 87%respectively,which were 2.1 times and 4.4 times of the reduced graphene oxide.Through the first-principles and other theories,we give the reasons for the enhanced catalytic performance of rGO-CuO:combined with internal and external factors,rGO-CuO under ultrasound could produce more hole and active sites that could interact with the OH·in pollutant molecules to achieve degradation.The rGO-CuO nanocomposite has a simple preparation process and low price,and has a high efficiency of degrading water pollution products and no secondary pollution products.It has a low-cost and high-efficiency application prospect in water pollution industrial production and life.

关 键 词：rGO-CuO NANOCOMPOSITES CHARACTERIZATION Nanomaterial catalyst First principle 

分 类 号：X703[环境科学与工程—环境工程] TQ426[化学工程] TB559[理学—物理]