title: CdTe and graphene co-sensitized TiO2 nanotube array photoanodes for protection of 304SS under visible light.
abstract: 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.
authors: Marine Corrosion and Protection Centre, Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, Qingdao 266071, People's Republic of China. University of Chinese Academy of Sciences, 19 (Jia) Yuquan Road, Beijing 100049, People's Republic of China.
authors: Hong
authors: H
authors: Li
authors: Xiutong
authors: X
authors: Wang
authors: Liang
authors: L
authors: Zhang
authors: Baorong
authors: B
authors: Hou