title: Multi-functional CuO nanowire/TiO2 nanotube arrays photoelectrode synthesis, characterization, photocatalysis and SERS applications.
abstract: Vertically aligned single crystalline CuO nanowire arrays (NWs) grown directly on TiO2 nanotube arrays (NTAs) supporting by Ti foil have been successfully fabricated using facile thermal oxidation of Cu nanocrystals in static air. CuO NWs growth behavior dependent on parent Cu nanocrystals sizes has been well investigated. Mass transport channel of Cu ions in horizontal and vertical for supporting CuO NWs diameter and length changes has been confirmed through a novel step-by-step surface diffusion process. CuO NWs, nano-mushrooms and nanosheets can be easily obtained by varying growth conditions. After photocatalytic synthesis of snow-like Ag nanocrystals upon CuO NWs/TiO2 NTAs, the hybrid photoelectrode exhibits superior catalytic property and detection sensitivity, which can clean themselves by photocatalytic degradation of RhB molecules adsorbed to the substrate under irradiation using surface enhanced Raman scattering (SERS) detection, a recycling can been achieved.
authors: College of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan, 467000 China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082 China.
authors: Pengtao
authors: P
authors: Sheng
authors: College of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan, 467000 China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082 China.
authors: Weili
authors: W
authors: Li
authors: College of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan, 467000 China.
authors: Pengwei
authors: P
authors: Du
authors: College of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan, 467000 China.
authors: Kesheng
authors: K
authors: Cao
authors: State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082 China. Electronic address: qycai0001@hnu.edu.cn.
authors: Qingyun
authors: Q
authors: Cai
keywords: CuO nanowires; Photocatalytic activity; Surface enhanced Raman scattering; TiO(2) nanotube arrays