Applied Catalysis B: Environmental 235 (2018) 9–16 Contents lists available at ScienceDirect Applied Catalysis B: Environmental journal homepage: www.elsevier.com/locate/apcatb Electron transfer dynamics of quaternary sulfur semiconductor/mos layer- on-layer for eﬃcient visible-light h evolution Xiaowei Shi, Mamoru Fujitsuka, Tetsuro Majima The Institute of Scientiﬁc and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan ARTIC L E I NF O ABSTRAC T Keywords: Photocatalytic water reduction into H provides huge charm for simultaneously resolving fossil energy shortage Quaternary sulfur semiconductor and environmental issues. Seeking photocatalysts with characteristics of low-cost, environmental friendliness MoS and visible light response, and accelerating the charge separation remain signiﬁcant challenges to develop high Layer structure eﬃcient solar-to-H conversion systems. Here, quaternary sulfur semiconductor Zn Ca In S (ZCIS) micro- 2 0.4 0.6 2 4 Electron transfer spheres composed of cross-linked nanosheets and ZCIS microspheres modiﬁed with MoS (ZM-X) were designed Photocatalysis and prepared via hydrothermal methods. Detailed characterizations indicated that the layer structured MoS nanosheets were mainly deposited on the surface of ZCIS nanosheet to form a 2D-2D structure that greatly increased the contact surface area for charge transfer, which was critical to the high photocatalytic performance for H evolution. Femtosecond time-resolved diﬀuse reﬂectance
Applied Catalysis B: Environmental – Elsevier
Published: Nov 5, 2018
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