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Amorphous MoSx-Coated TiO2 Nanotube Arrays for Enhanced Electrocatalytic Hydrogen Evolution Reaction Liu, Z, Zhang, X, Wang, B, Xia, M, Gao, S, Liu, X, Zavabeti, A, Ou, J, Kalantar Zadeh, K and Wang, Y 2018, 'Amorphous MoSx-Coated TiO2 Nanotube Arrays for Enhanced Electrocatalytic Hydrogen Evolution Reaction', Journal of Physical Chemistry C, vol. 122, no. 24, pp. 12589-12597. Document type: Journal Article Collection: Journal Articles Title Amorphous MoSx-Coated TiO2 Nanotube Arrays for Enhanced Electrocatalytic Hydrogen Evolution Reaction Author(s) Liu, Z Zhang, X Wang, B Xia, M Gao, S Liu, X Zavabeti, A Ou, J Kalantar Zadeh, K Wang, Y Year 2018 Journal name Journal of Physical Chemistry C Volume number 122 Issue number 24 Start page 12589 End page 12597 Total pages 9 Publisher American Chemical Society Abstract Two-dimensional amorphous MoSx(a-MoSx) has been confirmed to be a highly active and economic electrocatalyst for hydrogen evolution reaction (HER). The development of its hybrid cocatalyst is envisioned to bestow more active sites with appropriate crystal engineering and modified electronic properties for enhancing catalytic performance. In this work, a composite cocatalyst comprising a-MoSx(x = 1.78) and well-ordered anodized TiO2nanotube arrays (TNAs) is successfully developed through a facile electrodeposition route. The synergistic coupling of the unique vector charge transfer effect of TNAs and proliferation of active sites in a-MoSxderived from the space confinement effect and curved interface growth of TNAs lead to a significant enhancement of HER activity, compared to those of other forms of MoS2-based electrodes that have been previously reported. The MoSx/TNAs electrode exhibits the relatively small onset overpotential of 88 mV and presents an overpotential of 157 mV at 10 mA cm-2HER current density. The composite electrodes also show an excellent stability with no performance degradation after undergoing 1000 times successive linear sweep voltammetry. The deposition of a-MoSxonto the curved sidewall in a confined space of TNAs is demonstrated to be an effective method to induce the growth of a-MoSx, leading to an enhanced catalytic activity toward HER. Subject Functional Materials Keyword(s) photocatalytic H-2 evolution charge-carrier transfer active edge sites molybdenum sulfide quantum dots catalytic-activities 2-dimensional MOS2 1T phase nanosheets films DOI - identifier 10.1021/acs.jpcc.8b01678 Copyright notice © 2018 American Chemical Society ISSN 1932-7447 Related Links Link Description https://dx.doi.org/10.1021/acs.jpcc.8b01678 Link to Published Version   Versions Version Filter Type Mon, 10 Dec 2018, 13:03:57 EST Filtered Full Citation counts:   Cited 32 times in Thomson Reuters Web of Science Article | Citations Cited 0 times in Scopus Article Altmetric details: Access Statistics: 58 Abstract Views  -  Detailed Statistics Created: Thu, 06 Dec 2018, 10:39:00 EST by Catalyst Administrator