Spherical Cu2O Assembled by Small Nanoparticles and Its High Efficiency in Photodegradations of Methylene Blue Under Different Light Sources  

作　　者：CHEN Peiwen ZHU Lianjie CHANG Zhuangzhuang GAO Hongjia CHEN Deyou QIU Mo 

机构地区：[1]School of Chemistry&Chemical Engineering,Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion,Tianjin University of Technology,Tianjin 300384,P.R.China [2]Agro-Environmental Protection Institute,Chinese Academy of Agricultural Sciences,Tianjin 300191,P.R.China

出　　处：《Chemical Research in Chinese Universities》2020年第6期1108-1115,共8页高等学校化学研究（英文版）

基　　金：Supported by the National Natural of Science Foundation of China(No.21371132).

摘　　要：Well-dispersed mesoporous spherical Cu2O assembled by small nanoparticles was synthesized by a green and rapid solution route at room temperature under assistance of ultrasonic,using eco-friendly ascorbic acid(AA)as the main reducing agent and glucose as a weak reducing agent and soft template.The CuO spheres were characterized by XRD,SEM,HRTEM,XPS and N2 adsorption-desorption isotherm.Its optical property was studied by UV-Vis diffuse reflectance absorption spectrum and the photocatalytic activities were evaluted by photodegradations of me thylene blue(MB)under different light sources.The results show that each spherical Cu2O(ca.200 nm in diameter)was accumulated by numerous small nanoparticles of 8-10 nm and mesopores exist between the nanoparticles,which result in a high BET surface area.The spherical Cu2O exhibits good light-harvesting ability in both UV and visiblelight region and excellent photodegradation activities to high concentrations of MB solutions under both UV-visible light and visible light.

关 键 词：Spherical Cu2O PHOTODEGRADATION Methylene blue Visible light 

分 类 号：O64[理学—物理化学]