Abstract: Graphene/TiO2 nanotube array film materials,prepared by hydrothermal treatment of TiO2 nanotube arrays and graphene oxide,are further decorated with BiOBr via a successive ion deposition to construct BiOBr/graphene/TiO2,a kind of ternary composite nanotube array film materials.The phase composition,surface morphology,chemical states of elements and optical adsorption property of the as-prepared samples are characterized by X-ray diffractometry (XRD),scanning electron microscopy (SEM),X-ray electron spectroscopy (XPS) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS).The results disclose that graphene and BiOBr nanosheets are successfully loaded on the surface of TiO2 nanotube arrays.A red-shift of the absorption edge and enhanced light absorption intensity in the UV-Vis DRS are observed for the prepared BiOBr/graphene/TiO2 nanotube arrays in comparison with TiO2 nanotube arrays and graphene/TiO2 nanotube arrays.Moreover,the photoelectrochemical and electrochemical detection results indicate the co-modification of BiOBr and graphene improves the photocurrent,open circuit potential,and photo-conversion efficiency of TiO2 nanotube.
苑小娇, 孙明轩, 郑朝. BiOBr/石墨烯/TiO2纳米管阵列薄膜的制备及光电化学性能研究[J]. 现代化工, 2019, 39(7): 156-161.
YUAN Xiao-jiao, SUN Ming-xuan, ZHENG Zhao. Preparation of BiOBr/graphene/TiO2 nanotube array film and its photoelectrochemical performance. Modern Chemical Industry, 2019, 39(7): 156-161.
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