Journal article
Phase-Controlled Synthesis of 1T-MoSe2/NiSe Heterostructure Nanowire Arrays via Electronic Injection for Synergistically Enhanced Hydrogen Evolution
X Zhang, YY Zhang, Y Zhang, WJ Jiang, QH Zhang, YG Yang, L Gu, JS Hu, LJ Wan
Small Methods | WILEY-V C H VERLAG GMBH | Published : 2019
Abstract
The crystal phase significantly affects the properties and functions of molybdenum dichalcogenides (MoX2). Phase-engineered synthesis is challenging for constructing metallic-phase 1T-MoX2 for better electrocatalysis than their semiconducting counterparts. Here, 1T-MoSe2 nanosheet arrays are successfully prepared on metallic NiSe nanowires to couple the synergistic effects of efficient hydrogen formation and water dissociation for hydrogen evolution reaction (HER). Systematic investigations reveal that the electronic injection from NiSe to MoSe2 induces the phase transition from 2H- to metallic 1T-phase. Benefiting from the phase engineering for enhancing intrinsic activity, the heterostruct..
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Awarded by National Natural Science Foundation of China
Funding Acknowledgements
X.Z. and Y.-Y.Z. contributed equally to this work. The authors acknowledge the financial support from the National Key Project on Basic Research (2015CB932302), National Natural Science Foundation of China (21773263, 91645123, and 21703257), and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB12020100). The authors also thank Dr. Z. J. Zhao, Dr. X. Y. Zhang, and Dr. Y. Sun at the Center for Analysis and Testing, ICCAS for their help for the XPS and XRD analysis.