Preparation and Photoelectrochemical Properties of TiO2/Bi4Ti3O12 Composite Photoanode
TiO2/Bi4Ti3O12(TiO2/BTO)composite nanorod array were prepared and their photoelectrochemical performance were studied.TiO2 nanorod array were prepared by hydrothermal method,TiO2/BTO composite nanorod array were prepared by a sol-gel hydrothermal process of Bi4Ti3O12(BTO)film on TiO2 nanorod array surface.The result showed that the morphology of the TiO2/BTO composite nanorod array was uniform and the crystallization was good.Photoelectrochemical performance showed that,due to the enhanced visible light absorption and p-n junction between the TiO2 and BTO,TiO2/BTO composite nanorod array showed better photoelectrochemical performance than TiO2 nanorod array.The photocurrent of the optimum TiO2/BTO sample achieved 0.6 mA·cm-2.
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