title: Rational and scalable fabrication of high-quality WO3/CdS core/shell nanowire arrays for photoanodes toward enhanced charge separation and transport under visible light.
abstract: High-quality one-dimensional WO3/CdS core/shell nanowire arrays used as photoanodes in photoelectrochemical (PEC) cells were for the first time prepared via a rational, two-step chemical vapor deposition process. The narrow band-gap CdS shell was homogeneously coated on the entire surface of as-grown WO3 core nanowire arrays, forming coaxial heterostructures. The one-dimensional core/shell heterostructure facilitates the photogenerated electron-hole pair separation and the electron transfer from CdS to WO3 nanowires under visible light illumination. Moreover, the core nanowire arrays provide a direct pathway for the electron transport. The present results imply that the WO3/CdS core/shell heterostructure nanowire arrays may be useful in the design of nanostructure photoanodes toward highly efficient PEC cells.
authors.affiliation: Eco-Materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, P. R. China. zgzou@nju.edu.cn.
authors.forename: Haijin
authors.initials: H
authors.lastname: Li
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.forename: Wenjun
authors.initials: W
authors.lastname: Luo
authors.forename: Qinfeng
authors.initials: Q
authors.lastname: Xu
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Xiao
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zou
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D004579:Electron Transport; D008027:Light; D053770:Nanowires / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D010087:Oxides; D013440:Sulfides; C034939:cadmium sulfide; C511604:tungsten oxide; D014414:Tungsten