Synthesis of Mn-doped ZnS microspheres with enhanced visible light photocatalytic activity

被引：89

作者：

Wang, Lu ^{[1
]}

Wang, Peng ^{[1
]}

Huang, Baibiao ^{[1
]}

Ma, Xiaojuan ^{[2
]}

Wang, Gang ^{[1
]}

Dai, Ying ^{[2
]}

Zhang, Xiaoyang ^{[1
]}

Qin, Xiaoyan ^{[1
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 391卷

基金：

中国国家自然科学基金;

关键词：

Hexagonal ZnS; Mn2+ doping; Microsphere; Photocatalysis; Visible light; First principle calculations; BRILLOUIN-ZONE INTEGRATIONS; REDUCED GRAPHENE OXIDE; QUANTUM DOTS; PHOTOLUMINESCENCE; NANOPARTICLES; SULFIDE; WATER; H-2; NANOCRYSTALS; DEGRADATION;

D O I：

10.1016/j.apsusc.2016.06.159

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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.

引用

页码：557 / 564

页数：8

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