Spherical Cu2O Assembled by Small Nanoparticles and Its High Efficiency in Photodegradations of Methylene Blue Under Different Light Sources |
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| Authors: | CHEN Peiwen ZHU Lianjie CHANG Zhuangzhuang GAO Hongjia CHEN Deyou QIU Mo |
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| Affiliation: | 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 |
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| Abstract: | 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 Cu2O 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 visible light region and excellent photodegradation activities to high concentrations of MB solutions under both UV-visible light and visible light. |
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| Keywords: | Spherical Cu2O Photodegradation Methylene blue Visible light |
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