DEVELOPMENT OF TiO2-REDUCED GRAPHENE OXIDE NANOCOMPOSITES AND THEIR ENHANCED PHOTOCATALYTIC AND PHOTOVOLTAIC PERFORMANCE

作者：Xu, D.^*; Wang, P.; Shen, B.

来源：Digest Journal of Nanomaterials and Biostructures, 2016, 11(1): 15-22.

• TiO2
• Reduced graphene oxide
• Nanocomposite
• Photocatalyst
• Photovoltaic activity

In this contribution, TiO2-reduced graphene oxide (RGO) nanocomposites were synthesized via an ultrasonication-assisted reduction method using graphene oxide (GO) in the TiO2 precursor solution. The reduction of GO and the formation of TiO2 crystals occurred simultaneously. The synthesized nanocomposite was characterized by SEM, EDX, Raman spectroscopy, FTIR, XRD, XPS, UV-vis spectroscopy, photoluminescence spectrometer and electrochemical impedance spectroscopy. As a result of the introduction of RGO, the light absorption of octahedral TiO2 was markedly improved. The results revealed that weight percent of RGO has substantial influence on degradation of Rhodamine B under visible light irradiation. The enhancement of the photocatalytic activity was attributed to more harvesting of the visible-light irradiation and efficiently separation of the photogenerated charge carriers. Meanwhile, upon the RGO loading, the photoelectric conversion efficiency of TiO2-RGO nanocomposite modified electrode was highly improved

• 出版日期2016-1
• 单位浙江大学