High phase-purity 1T′-MoS2- and 1T′-MoSe2-layered crystals

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yifu Yu
  • Gwang-Hyeon Nam
  • Xue-Jun Wu
  • Kang Zhang
  • Zhenzhong Yang
  • Junze Chen
  • Qinglang Ma
  • Meiting Zhao
  • Zhengqing Liu
  • Fei-Rong Ran
  • Xingzhi Wang
  • Hai Li
  • Xiao Huang
  • Bing Li
  • Qihua Xiong
  • Qing Zhang
  • Zheng Liu
  • Lin Gu
  • Yonghua Du
  • Wei Huang

Detail(s)

Original languageEnglish
Pages (from-to)638-643
Journal / PublicationNature Chemistry
Volume10
Issue number6
Online published2 Apr 2018
Publication statusPublished - Jun 2018
Externally publishedYes

Abstract

Phase control plays an important role in the precise synthesis of inorganic materials, as the phase structure has a profound influence on properties such as conductivity and chemical stability. Phase-controlled preparation has been challenging for the metallic-phase group-VI transition metal dichalcogenides (the transition metals are Mo and W, and the chalcogens are S, Se and Te), which show better performance in electrocatalysis than their semiconducting counterparts. Here, we report the large-scale preparation of micrometre-sized metallic-phase 1T′-MoX2 (X = S, Se)-layered bulk crystals in high purity. We reveal that 1T′-MoS2 crystals feature a distorted octahedral coordination structure and are convertible to 2H-MoS2 following thermal annealing or laser irradiation. Electrochemical measurements show that the basal plane of 1T′-MoS2 is much more active than that of 2H-MoS2 for the electrocatalytic hydrogen evolution reaction in an acidic medium.

Citation Format(s)

High phase-purity 1T′-MoS2- and 1T′-MoSe2-layered crystals. / Yu, Yifu; Nam, Gwang-Hyeon; He, Qiyuan et al.
In: Nature Chemistry, Vol. 10, No. 6, 06.2018, p. 638-643.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review