SDBS-assisted hydrothermal preparation and electrocatalytic properties of few-layer and edge-rich MoS2 nanospheres

被引:8
作者
Ma, Lin [1 ]
Zhou, Xiaoping [1 ]
Xu, Limei [1 ]
Ye, Cui [1 ]
Luo, Jin [1 ]
Xu, Xuyao [1 ]
Zhang, Lingling [1 ]
Chen, Weixiang [2 ]
机构
[1] Lingnan Normal Univ, Inst Phys Chem, Dev Ctr New Mat Engn & Technol Univ Guangdong, Sch Chem & Chem Engn, Zhanjiang 524048, Peoples R China
[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
关键词
Few-layer structure; Molybdenum disulfide; Hydrogen evolution reaction; Electrocatalytic property; HYDROGEN-EVOLUTION-REACTION; TRANSITION-METAL DICHALCOGENIDES; EFFICIENT CATALYST; ENERGY CARRIER; ACTIVE-SITES; NANOSHEETS; FILMS; EXFOLIATION; GRAPHENE;
D O I
10.1016/j.spmi.2015.03.031
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
MoS2 nanospheres assembled by few-layer (FL-) and edge-rich nanosheets with uniform sizes have been successfully synthesized by a facile anionic surfactant-assisted hydrothermal approach. The obtained samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and evaluated as electrochemical catalysts in the hydrogen evolution reaction (HER). It is found that the anionic surfactant sodium dodecylbenzene sulfonate (SDBS) plays a crucial role in the formation of MoS2 nanosheets with few layers and rich exposed edges in our current synthetic route. As a result, the as-prepared FL-MoS2 nanosphere catalyst exhibits obviously enhanced HER activity such as more positive onset potential, larger current density as well as smaller Tafel slope of 65 mV dec(-1) in comparison with the pristine MoS2 sample due to the few-layer characteristics and rich exposed active edges. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:112 / 120
页数:9
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