MoS2 Nanosheets: A Designed Structure with High Active Site Density for the Hydrogen Evolution Reaction

被引：356

作者：

Wu, Zhuangzhi ^{[1
,4
]}

Fang, Baizeng ^{[2
,3
]}

Wang, Zhiping ^{[1
]}

Wang, Changlong ^{[1
]}

Liu, Zhihong ^{[4
]}

Liu, Fangyang ^{[4
]}

Wang, Wei ^{[5
]}

Alfantazi, Alcram ^{[5
]}

Wang, Dezhi ^{[1
]}

Wilkinson, David P. ^{[2
,3
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Minist Educ Nonferrous Mat Sci & Engn, Key Lab, Changsha 410083, Peoples R China

[2] Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada

[3] Clean Energy Res Ctr, Vancouver, BC V6T 1Z3, Canada

[4] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China

[5] Univ British Columbia, Dept Mat Engn, Vancouver, BC V6T 1Z4, Canada

来源：

ACS CATALYSIS | 2013年 / 3卷 / 09期

关键词：

molybdenum disulfide; nanosheets; active site density; electrocatalyst; hydrogen evolution reaction; MOLYBDENUM SULFIDE; CATALYTIC-ACTIVITY; EFFICIENT ELECTROCATALYST; EDGE SITES; HYDRODESULFURIZATION; CARBON; NANOPARTICLES; OXIDATION; FILMS; CO;

D O I：

10.1021/cs400384h

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：

Two-dimensional MoS2 nanosheets (NSs) with high active site density were designed for the hydrogen evolution reaction (HER) through a microdomain reaction method. The effect of the annealing temperature on the microstructure and the HER performance of MoS2 NSs was examined, and a plausible relation between the stack structures of the MoS2 catalysts and their HER performance was also explored. The MoS2 NS electrocatalyst obtained at 550 degrees C reveals the best HER performance with a relatively small Tafel slope of 68 mV/dec. Both the exposed surface area and active site density are very important for providing a large amount of active sites. The present work has been proved to be an efficient route to achieve a high active site density and a relatively large surface area, which might have potential use in photoelectrocatalytic water splitting.

引用

页码：2101 / 2107

页数：7

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