Synthesis and Photocatalytic Performance of RGO/ZnO Nanorod Composites

• Main Authors: LU Jia, WANG Hui-hu, DONG Yi-fan, CHANG Ying, MA Xin-guo, DONG Shi-jie
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2016-12-01
• Series: Journal of Materials Engineering
• Subjects: reduced graphene oxide; ZnO; photocatalysis; methyl orange
• Online Access: http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.12.008

ZnO nanorods and RGO/ZnO nanorods composites were prepared by hydrothermal method. The influence of RGO content on the photocatalytic activity of RGO/ZnO nanorods composites was studied. ZnO nanorods and RGO/ZnO nanocomposites were characterized by X-ray diffraction (XRD), field emission electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance UV-visible absorption spectroscopy techniques. The results show that RGO/ZnO samples are synthesized successfully. With different additions of GO, the RGO/ZnO samples obtained exhibit different absorption characteristics in visible light region. The photocatalytic results of using methyl orange (MO) as the simulated pollutant show that RGO/ZnO nanorods composites exhibit high degradation efficiency under UV-Vis light illumination. The highest photocatalytic performance is obtained for RGO/ZnO composites when the mass ratio of RGO to ZnO is 3%. MO is almost completely degraded in 120min. RGO/ZnO also shows the visible-light-driven photocatalytic activity under visible light illumination (<i>λ</i>>400nm), and the maximum MO degradation efficiency in 180min can reach 26.2%, meanwhile, RGO/ZnO samples exhibit good photostability.