标题：Synthesis of Mn-doped ZnS microspheres with enhanced visible light photocatalytic activity
作者：Wang, Lu; Wang, Peng; Huang, Baibiao; Ma, Xiaojuan; Wang, Gang; Dai, Ying; Zhang, Xiaoyang; Qin, Xiaoyan
作者机构：[Wang, Lu; Wang, Peng; Huang, Baibiao; Wang, Gang; Zhang, Xiaoyang; Qin, Xiaoyan] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R Ch 更多
会议名称：2nd International Symposium on Energy and Environmental Photocatalytic Materials (EEPM2)
会议日期：APR 01-04, 2016
来源：APPLIED SURFACE SCIENCE
关键词：Hexagonal ZnS; Mn2+ doping; Microsphere; Photocatalysis; Visible light;; First principle calculations
摘要：ZnS microspheres with a series of Mn-doping concentration were synthesized via a facile solvothermal route. The phase structures, morphologies, and chemical states were characterized by X-ray powder diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The phase structure of the synthesized Mn-ZnS microspheres is hexagonal from the XRD patterns. UV-vis diffuse reflectance spectra were employed to analyze the absorption properties of the samples. The Mn-doped2nS exhibited stronger visible light absorption with the increasing of Mn content. Their photocatalytic activities were evaluated by H-2 production from water and reducing Cr6+ under visible light irradiation. The as-prepared Mn-doped ZnS exhibited better photocatalytic performance than that of pure ZnS and the optimal doping concentration was 7%. The enhancement in photocatalytic activity can be attributed to the expansion of light absorption and the increase in life time of photogenerated carriers. (C) 2016 Elsevier B.V. All rights reserved.