材料科学
石墨烯
可见光谱
饱和甘汞电极
纳米技术
碲化镉光电
扫描电子显微镜
透射电子显微镜
光电子学
化学气相沉积
电极
化学工程
电化学
复合材料
工作电极
工程类
物理化学
化学
作者
Hong Li,Xiutong Wang,Liang Zhang,Baorong Hou
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2015-03-25
卷期号:26 (15): 155704-155704
被引量:27
标识
DOI:10.1088/0957-4484/26/15/155704
摘要
CdTe/graphene/TiO2 films that served as photoanodes for cathodic protection application were prepared by an electrochemical deposition method. The deposition of graphene and CdTe nanoparticles (NPs) on the surface of the TiO2 nanotubes was confirmed by scanning electron microscope and transmission electron microscopy. The composites exhibited high light absorption in both the UV and visible light region. The results indicated that TiO2 nanotube photoelectrodes sensitized by 20-cycle graphene and 30-cycle CdTe NPs exhibited effective photocathodic protection properties for 304 stainless steel (304SS) under the visible-light illumination, with an photopotential of -750 mV versus saturated calomel electrode and a current density of 560 μA cm(-2). Due to the efficient photogenerated charge separation, the three-component CdTe/graphene/TiO2 showed stronger photoresponse than pure TiO2 under visible-light illumination. In summary, the CdTe/graphene could improve the photocathodic protection properties of TiO2 films.
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