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

Amirhossein Hasani; Thang Phan Nguyen; Mahider Tekalgne; Quyet Van Le; Kyoung Soon Choi; Tae Hyung Lee; Tae Jung Park; Ho Won Jang; Soo Young Kim

doi:10.1016/j.apcata.2018.09.008

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

Amirhossein Hasani
, Thang Phan Nguyen
, Mahider Tekalgne
, Quyet Van Le
, Kyoung Soon Choi
, Tae Hyung Lee
, Tae Jung Park^*
, Ho Won Jang
, Soo Young Kim

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

Abstract

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⁺/H₂ reduction potential and the large surface area of the WS₂ NFs.

Original language	English
Pages (from-to)	73-79
Number of pages	7
Journal	Applied Catalysis A: General
Volume	567
DOIs	https://doi.org/10.1016/j.apcata.2018.09.008
Publication status	Published - 2018 Oct 25
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Band alignment
HER
Nanoflower
WS

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2018.09.008

Cite this

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title = "The role of metal dopants in WS2 nanoflowers in enhancing the hydrogen evolution reaction",

abstract = "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+/H2 reduction potential and the large surface area of the WS2 NFs.",

keywords = "Band alignment, HER, Nanoflower, WS",

author = "Amirhossein Hasani and Nguyen, \{Thang Phan\} and Mahider Tekalgne and \{Van Le\}, Quyet and Choi, \{Kyoung Soon\} and Lee, \{Tae Hyung\} and \{Jung Park\}, Tae and Jang, \{Ho Won\} and Kim, \{Soo Young\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = oct,

day = "25",

doi = "10.1016/j.apcata.2018.09.008",

language = "English",

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T1 - The role of metal dopants in WS2 nanoflowers in enhancing the hydrogen evolution reaction

AU - Hasani, Amirhossein

AU - Nguyen, Thang Phan

AU - Tekalgne, Mahider

AU - Van Le, Quyet

AU - Choi, Kyoung Soon

AU - Lee, Tae Hyung

AU - Jung Park, Tae

AU - Jang, Ho Won

AU - Kim, Soo Young

PY - 2018/10/25

Y1 - 2018/10/25

N2 - 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+/H2 reduction potential and the large surface area of the WS2 NFs.

AB - 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+/H2 reduction potential and the large surface area of the WS2 NFs.

KW - Band alignment

KW - HER

KW - Nanoflower

KW - WS

UR - https://www.scopus.com/pages/publications/85053779571

U2 - 10.1016/j.apcata.2018.09.008

DO - 10.1016/j.apcata.2018.09.008

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VL - 567

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JO - Applied Catalysis A: General

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