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Title: High phase-purity 1T'-MoS2- and 1T'-MoSe2-layered crystals
Authors: Yu, Yifu
Nam, Gwang-Hyeon
He, Qiyuan
Wu, Xue-Jun
Zhang, Kang
Yang, Zhenzhong
Chen, Junze
Ma, Qinglang
Zhao, Meiting
Liu, Zhengqing
Ran, Fei-Rong
Wang, Xingzhi
Li, Hai
Huang, Xiao
Li, Bing
Xiong, Qihua
Zhang, Qing
Liu, Zheng
Gu, Lin
Du, Yonghua
Huang, Wei
Zhang, Hua
Keywords: Engineering::Materials
Issue Date: 2018
Source: Yu, Y., Nam, G.-H., He, Q., Wu, X.-J., Zhang, K., Yang, Z., ... Zhang, H. (2018). High phase-purity 1T'-MoS2- and 1T'-MoSe2-layered crystals. Nature Chemistry, 10(6), 638-643. doi:10.1038/s41557-018-0035-6
Journal: Nature Chemistry
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.
ISSN: 1755-4349
DOI: 10.1038/s41557-018-0035-6
Rights: © 2018 Springer Nature. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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