One-pot synthesis of holey MoS                         2                          nanostructures as efficient electrocatalysts for hydrogen evolution

Lanlan Wang; Xuan Li; Jian Zhang; Hongzhong Liu; Weitao Jiang; Hong Zhao

doi:10.1016/j.apsusc.2016.11.235

One-pot synthesis of holey MoS ₂ nanostructures as efficient electrocatalysts for hydrogen evolution

Lanlan Wang, Xuan Li, Jian Zhang, Hongzhong Liu, Weitao Jiang, Hong Zhao

Xi'an Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

17 引用（Scopus）

摘要

In this work, highly porous MoS ₂ nanostructures have been synthesized via a one-pot and versatile calcination of cyanamide and (NH ₄ ) ₂ MoS ₄ precursors. At first, the thermal polymerization of cyanamide into carbon nitride suppresses the aggregation of MoS ₂ . Then, the thermal decomposition of the formed carbon nitride brings about plentiful pores with a size of 4–70 nm in MoS ₂ nanostructures, generating an extremely large specific surface area up to 311 m ² g ⁻¹ . Due to the high specific surface area and abundant exposed edge sites, the resultant porous MoS ₂ (p-MoS ₂ ) nanostructures exhibited outstanding electrochemical hydrogen evolution (HER) activity in a 0.5 M H ₂ SO ₄ aqueous solution. The onset overpotential and the overpotential at a current density of 10 mA/cm ² were as low as ∼30 mV and ∼130 mV, respectively, which is superior to the previously-reported MoS ₂ -based HER electrocatalysts.

源语言	英语
页（从-至）	1719-1725
页数	7
期刊	Applied Surface Science
卷	396
DOI	https://doi.org/10.1016/j.apsusc.2016.11.235
出版状态	已出版 - 28 2月 2017
已对外发布	是

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10.1016/j.apsusc.2016.11.235

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@article{3020b7e44c0d4f5d80d0ab41d3cbc848,

title = " One-pot synthesis of holey MoS 2 nanostructures as efficient electrocatalysts for hydrogen evolution ",

abstract = " In this work, highly porous MoS 2 nanostructures have been synthesized via a one-pot and versatile calcination of cyanamide and (NH 4 ) 2 MoS 4 precursors. At first, the thermal polymerization of cyanamide into carbon nitride suppresses the aggregation of MoS 2 . Then, the thermal decomposition of the formed carbon nitride brings about plentiful pores with a size of 4–70 nm in MoS 2 nanostructures, generating an extremely large specific surface area up to 311 m 2 g −1 . Due to the high specific surface area and abundant exposed edge sites, the resultant porous MoS 2 (p-MoS 2 ) nanostructures exhibited outstanding electrochemical hydrogen evolution (HER) activity in a 0.5 M H 2 SO 4 aqueous solution. The onset overpotential and the overpotential at a current density of 10 mA/cm 2 were as low as ∼30 mV and ∼130 mV, respectively, which is superior to the previously-reported MoS 2 -based HER electrocatalysts.",

keywords = "Electrocatalysis, Hydrogen evolution, MoS, Porous nanostructures, Water splitting",

author = "Lanlan Wang and Xuan Li and Jian Zhang and Hongzhong Liu and Weitao Jiang and Hong Zhao",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2017",

month = feb,

day = "28",

doi = "10.1016/j.apsusc.2016.11.235",

language = "英语",

volume = "396",

pages = "1719--1725",

journal = "Applied Surface Science",

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TY - JOUR

T1 - One-pot synthesis of holey MoS 2 nanostructures as efficient electrocatalysts for hydrogen evolution

AU - Wang, Lanlan

AU - Li, Xuan

AU - Zhang, Jian

AU - Liu, Hongzhong

AU - Jiang, Weitao

AU - Zhao, Hong

PY - 2017/2/28

Y1 - 2017/2/28

N2 - In this work, highly porous MoS 2 nanostructures have been synthesized via a one-pot and versatile calcination of cyanamide and (NH 4 ) 2 MoS 4 precursors. At first, the thermal polymerization of cyanamide into carbon nitride suppresses the aggregation of MoS 2 . Then, the thermal decomposition of the formed carbon nitride brings about plentiful pores with a size of 4–70 nm in MoS 2 nanostructures, generating an extremely large specific surface area up to 311 m 2 g −1 . Due to the high specific surface area and abundant exposed edge sites, the resultant porous MoS 2 (p-MoS 2 ) nanostructures exhibited outstanding electrochemical hydrogen evolution (HER) activity in a 0.5 M H 2 SO 4 aqueous solution. The onset overpotential and the overpotential at a current density of 10 mA/cm 2 were as low as ∼30 mV and ∼130 mV, respectively, which is superior to the previously-reported MoS 2 -based HER electrocatalysts.

AB - In this work, highly porous MoS 2 nanostructures have been synthesized via a one-pot and versatile calcination of cyanamide and (NH 4 ) 2 MoS 4 precursors. At first, the thermal polymerization of cyanamide into carbon nitride suppresses the aggregation of MoS 2 . Then, the thermal decomposition of the formed carbon nitride brings about plentiful pores with a size of 4–70 nm in MoS 2 nanostructures, generating an extremely large specific surface area up to 311 m 2 g −1 . Due to the high specific surface area and abundant exposed edge sites, the resultant porous MoS 2 (p-MoS 2 ) nanostructures exhibited outstanding electrochemical hydrogen evolution (HER) activity in a 0.5 M H 2 SO 4 aqueous solution. The onset overpotential and the overpotential at a current density of 10 mA/cm 2 were as low as ∼30 mV and ∼130 mV, respectively, which is superior to the previously-reported MoS 2 -based HER electrocatalysts.

KW - Electrocatalysis

KW - Hydrogen evolution

KW - MoS

KW - Porous nanostructures

KW - Water splitting

UR - http://www.scopus.com/inward/record.url?scp=85006925686&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2016.11.235

DO - 10.1016/j.apsusc.2016.11.235

M3 - 文章

AN - SCOPUS:85006925686

SN - 0169-4332

VL - 396

SP - 1719

EP - 1725

JO - Applied Surface Science

JF - Applied Surface Science

ER -

One-pot synthesis of holey MoS 2 nanostructures as efficient electrocatalysts for hydrogen evolution

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One-pot synthesis of holey MoS ₂ nanostructures as efficient electrocatalysts for hydrogen evolution