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

页码：73 / 79

页数：7

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