title: Efficient Solar Light Harvesting CdS/Co9S8Hollow Cubes for Z-Scheme Photocatalytic Water Splitting.
abstract: Hollow structures with an efficient light harvesting and tunable interior component offer great advantages for constructing a Z-scheme system. Controlled design of hollow cobalt sulfide (Co9S8) cubes embedded with cadmium sulfide quantum dots (QDs) is described, using hollow Co(OH)2as the template and a one-pot hydrothermal strategy. The hollow CdS/Co9S8cubes utilize multiple reflections of light in the cubic structure to achieve enhanced photocatalytic activity. Importantly, the photoexcited charge carriers can be effectively separated by the construction of a redox-mediator-free Z-scheme system. The hydrogen evolution rate over hollow CdS/Co9S8is 134 and 9.1 times higher than that of pure hollow Co9S8and CdS QDs under simulated solar light irradiation, respectively. Moreover, this is the first report describing construction of a hollow Co9S8based Z-scheme system for photocatalytic water splitting, which gives full play to the advantages of light-harvesting and charges separation.
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
authors.forename: Bocheng
authors.initials: B
authors.lastname: Qiu
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
authors.forename: Qiaohong
authors.initials: Q
authors.lastname: Zhu
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Du
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
authors.forename: Linggang
authors.initials: L
authors.lastname: Fan
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
authors.forename: Mingyang
authors.initials: M
authors.lastname: Xing
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P.R. China.
authors.forename: Jinlong
authors.initials: J
authors.lastname: Zhang
keywords: Z-scheme; cadmium sulfide; cobalt sulfide; hydrogen evolution; multiple reflections