Controllable selenium vacancy engineering in basal planes of mechanically exfoliated WSe2 monolayer nanosheets for efficient electrocatalytic hydrogen evolution

Ying Sun; Xuewei Zhang; Baoguang Mao; Minhua Cao

doi:10.1039/C6CC07832J

Controllable selenium vacancy engineering in basal planes of mechanically exfoliated WSe₂ monolayer nanosheets for efficient electrocatalytic hydrogen evolution

Ying Sun,^a Xuewei Zhang,^a Baoguang Mao^a and Minhua Cao*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
E-mail: caomh@bit.edu.cn

Abstract

Engineering intrinsic selenium vacancies (Se-vacancies) was achieved in mechanically exfoliated WSe₂ monolayer nanosheets (WSe₂ MLNSs) via an annealing treatment. Our theoretical and experimental results reveal that these Se-vacancies can efficiently activate and optimize the basal planes of the WSe₂ MLNSs. As expected, the optimized catalyst exhibits efficient electrocatalytic hydrogen evolution.

Supplementary files

Publication details

The article was received on 27 Sep 2016, accepted on 15 Nov 2016 and first published on 15 Nov 2016

Article type: Communication

DOI: 10.1039/C6CC07832J

Citation: Chem. Commun., 2016,52, 14266-14269

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Controllable selenium vacancy engineering in basal planes of mechanically exfoliated WSe₂ monolayer nanosheets for efficient electrocatalytic hydrogen evolution

Y. Sun, X. Zhang, B. Mao and M. Cao, Chem. Commun., 2016, 52, 14266
DOI: 10.1039/C6CC07832J
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Chemical Communications

Controllable selenium vacancy engineering in basal planes of mechanically exfoliated WSe₂ monolayer nanosheets for efficient electrocatalytic hydrogen evolution

Abstract

Supplementary files

Publication details

Controllable selenium vacancy engineering in basal planes of mechanically exfoliated WSe₂ monolayer nanosheets for efficient electrocatalytic hydrogen evolution

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