A facile synthesis and characterization of graphene-like WS2 nanosheets

被引：31

作者：

Zhang, Xianghua ^{[1
]}

Lei, Weining ^{[1
]}

Ye, Xia ^{[1
]}

Wang, Chu ^{[1
]}

Lin, Bencai ^{[2
]}

Tang, Hua ^{[3
]}

Li, Changsheng ^{[3
]}

机构：

[1] Jiangsu Univ Technol, Sch Mech Engn, Changzhou 213001, Jiangsu, Peoples R China

[2] Changzhou Univ, Jiangsu Key Lab Solar Cell Mat & Technol, Sch Mat Sci & Engn, Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Changzhou 213164, Jiangsu, Peoples R China

[3] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 159卷

关键词：

WS2; Nanosheets; Gas-solid reaction; Nanocrystalline materials; Multilayer structure;

D O I：

10.1016/j.matlet.2015.07.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene-like WS2 nanosheets at large scale were successfully synthesized via a facile gas-solid reaction route, using tungsten trioxide (WO3) and thiourea as starting materials, and then calcined at 850 degrees C under N-2 atmosphere for 1 h. The final products were characterized by XRD, EDS, SEM and TEM. TEM and SEM images showed that the thickness of the obtained WS2 nanosheets was similar to 5 nm. The influence of temperature on the formation of WS2 nanosheets was discussed. A possible three-step conversion mechanism of WS2 nanosheets, which including decomposition, sulfurization, and subsequent exfoliation, was proposed to explain the formation of WS2 nanosheets on the basis of observations of a temperature-dependent morphology evolution process. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：399 / 402

页数：4

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