The role of metal dopants in WS2 nanoflowers in enhancing the hydrogen evolution reaction

被引：65
|
作者：
Hasani, Amirhossein [1 ]
Thang Phan Nguyen [2 ]
Tekalgne, Mahider [1 ]
Quyet Van Le [1 ,3 ]
Choi, Kyoung Soon [4 ]
Lee, Tae Hyung [5 ]
Park, Tae Jung [2 ]
Jang, Ho Won [5 ]
Kim, Soo Young [1 ]
机构：
[1] Chung Ang Univ, Sch Chem Engn & Mat Sci, Integrat Res Ctr Dimens Funct Mat 2, Inst Interdisciplinary Convergence Res, 84 Heukseok Ro, Seoul 06974, South Korea
[2] Chung Ang Univ, Dept Chem, 84 Heukseok Ro, Seoul 06974, South Korea
[3] Duy Tan Univ, Inst Res & Dev, Da Nang 550000, Vietnam
[4] KBSI, Adv Nanosurface Res Grp, 169-148 Gwahak Ro, Daejeon 34133, South Korea
[5] Seoul Natl Univ, Dept Mat Sci & Engn, Res Inst Adv Mat, Seoul, South Korea
来源：
APPLIED CATALYSIS A-GENERAL | 2018年 / 567卷
基金：
新加坡国家研究基金会;
关键词：
WS2; Nanoflower; HER; Band alignment; NANOSHEETS; TRANSITION; DISULFIDE; CATALYSTS; ELECTROCATALYST; NANOHYBRIDS; HYBRID; CARBON; MOSE2; FILMS;
D O I：
10.1016/j.apcata.2018.09.008
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：
We demonstrate a facile and efficient method for the synthesis of a metal-doped WS2 nanoflower (NF) catalyst. We also report its application for the electrocatalytic hydrogen evolution reaction (HER). The flower-like WS2 particles were produced by a hydrothermal reaction, and, subsequently, the WS2 was doped with metal chlorides such as AuCl3, AgCl, PtCl2, and PdCl2, followed by reduction with sodium borohydride to form metal-doped WS2 NFs. The Pd-doped WS2 NF catalyst showed a high HER performance, having a Tafel slope of 54 mV/dec and an overpotential of -175 mV at -10 mA cm(-2). The improvement is attributed to the energy band alignment near the H+/H-2 reduction potential and the large surface area of the WS2 NFs.
引用
收藏
页码：73 / 79
页数：7
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