title: ZnO/ZnS heterostructured nanorod arrays and their efficient photocatalytic hydrogen evolution.
abstract: Semiconducting heterostructures have been widely applied in photocatalytic hydrogen evolution due to their variable band gaps and high energy conversion efficiency. As typical semiconducting heterostructures, ZnO/ZnS heterostructured nanorod arrays (HNRAs) have been obtained through a simple anion-exchange process in this work. Structural characterization indicates that the heterostructured nanorods (HNRs) are all composed of hexagonal wurtzite ZnO core and cubic zinc-blende ZnS shell. As expected, the as-obtained one-dimensional heterostructures not only lower the energy barrier but also enhance the separation ability of photogenerated carriers in photocatalytic hydrogen evolution. Through comparisons, it is found that 1D ZnO/ZnS HNRAs exhibit much better performance in photocatalytic hydrogen evolution than 1D ZnO nanorod arrays (NRAs) and 1D ZnS NRAs. The maximum H2 production is 19.2 mmol h(-1) for 0.05 g catalyst under solar-simulated light irradiation at 25 °C and the corresponding quantum efficiency is 13.9 %, which goes beyond the economical threshold of photocatalytic hydrogen evolution technology.
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Di
authors.initials: D
authors.lastname: Bao
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China). gaopeng@hrbeu.edu.cn.
authors.forename: Peng
authors.initials: P
authors.lastname: Gao
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Xinyang
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Shuchao
authors.initials: S
authors.lastname: Sun
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Li
authors.affiliation: College of Science, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China). chenyujin@hrbeu.edu.cn.
authors.forename: Yujin
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Han
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China).
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 (P. R. China). yangpiaoping@hrbeu.edu.cn.
authors.forename: Piaoping
authors.initials: P
authors.lastname: Yang
keywords: ZnO/ZnS; hydrogen evolution; nanorod arrays; nanostructures; photocatalysis