Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105548
Title: Pre-reduction of metal oxides via carbon plasma treatment for efficient and stable electrocatalytic hydrogen evolution
Authors: Zhang, Yongqi
Ouyang, Bo
Xu, Kun
Xia, Xinhui
Zhang, Zheng
Rawat, Rajdeep Singh
Fan, Hong Jin
Keywords: Carbon Shells
DRNTU::Science::Physics
Electrocatalysis
Issue Date: 2018
Source: Zhang, Y., Ouyang, B., Xu, K., Xia, X., Zhang, Z., Rawat, R. S., & Fan, H. J. (2018). Pre-reduction of metal oxides via carbon plasma treatment for efficient and stable electrocatalytic hydrogen evolution. Small, 14(17), 1800340-. doi:10.1002/smll.201800340
Series/Report no.: Small
Abstract: Pre-reduction of transition metal oxides is a feasible and efficient strategy to enhance their catalytic activity for hydrogen evolution. Unfortunately, the prereduction via the common H2 annealing method is unstable for nanomaterials during the hydrogen evolution process. Here, using NiMoO4nanowire arrays as the example, it is demonstrated that carbon plasma (C-plasma) treatment can greatly enhance both the catalytic activity and the long-term stability of transition metal oxides for hydrogen evolution. The C-plasma treatment has two functions at the same time: it induces partial surface reduction of the NiMoO4 nanowire to form Ni4Mo nanoclusters, and simultaneously deposits a thin graphitic carbon shell. As a result, the C-plasma treated NiMoO4 can maintain its array morphology, chemical composition, and catalytic activity during long-term intermittent hydrogen evolution process. This work may pave a new way for simultaneous activation and stabilization of transition metal oxide-based electrocatalysts.
URI: https://hdl.handle.net/10356/105548
http://hdl.handle.net/10220/47879
ISSN: 1613-6810
DOI: 10.1002/smll.201800340
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Small and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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