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Structure and Phase Regulation in MoxC (α-MoC1-x/β-Mo2C) to Enhance Hydrogen Evolution

dc.contributor.authorZhang, Xiangyong
dc.contributor.authorWang, Junchao
dc.contributor.authorGuo, Ting
dc.contributor.authorLiu, Tianying
dc.contributor.authorWu, Zhuangzhi
dc.contributor.authorCavallo, Luigi
dc.contributor.authorCao, Zhen
dc.contributor.authorWang, Dezhi
dc.date.accessioned2019-02-10T08:14:38Z
dc.date.available2019-02-10T08:14:38Z
dc.date.issued2019-01-30
dc.identifier.citationZhang X, Wang J, Guo T, Liu T, Wu Z, et al. (2019) Structure and Phase Regulation in MoxC (α-MoC1-x/β-Mo2C) to Enhance Hydrogen Evolution. Applied Catalysis B: Environmental. Available: http://dx.doi.org/10.1016/j.apcatb.2019.01.086.
dc.identifier.issn0926-3373
dc.identifier.doi10.1016/j.apcatb.2019.01.086
dc.identifier.urihttp://hdl.handle.net/10754/631012
dc.description.abstractNon-precious metal-based efficient electrocatalysts with superior activity and stability for the hydrogen evolution reaction (HER) are useful in solving energy and environmental crises. Herein, monodisperse inverse opal-like MoxC (α-MoC1-x/β-Mo2C) nanospheres were synthesized via a facile strategy to adjust the intrinsic activity and maximize the exposed active sites. In particular, the MoxC-0.4 with the optimal composition of α-MoC1-x/β-Mo2C (0.56/0.44) demonstrated a superior HER performance in 0.5 M H2SO4 with a small Tafel slope of 48 mV dec-1 and remarkable stability. Such prominent performance not only benefits from the inverse opal-like structure that provides more active sites for HER, but also should be ascribed to the strong synergistic effect between α-MoC1-x and β-Mo2C. Based on theoretical calculations, it is further verified that the synergistic effect of MoxC-0.4 is originated from the optimization of interaction with the H* induced by the heterostructure. Furthermore, this work will broaden our vision for highly efficient hydrogen production by bridging the microscopic structure with macroscopic catalytic performance.
dc.description.sponsorshipFinancial supports from the National Natural Science Foundation of China (Grants 51572301), National Key R&D Program of China (2017YFB0306000), Hunan Provincial Natural Science Foundation (Grants 2016JJ3153) and the Innovation-Driven Project of Central South University (Grants 502221802) are gratefully acknowledged. The computational simulations were performed using the KAUST super computing resources.
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0926337319300967?via%3Dihub
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Applied Catalysis B: Environmental. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Catalysis B: Environmental, [, , (2019-01-30)] DOI: 10.1016/j.apcatb.2019.01.086 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMolybdenum carbide
dc.subjectelectrochemical catalyst
dc.subjecthydrogen evolution reaction
dc.subjectheterostructure
dc.titleStructure and Phase Regulation in MoxC (α-MoC1-x/β-Mo2C) to Enhance Hydrogen Evolution
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalApplied Catalysis B: Environmental
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Materials Science and Engineering, Central South University, Changsha, 410083, China.
dc.contributor.institutionKey Laboratory of Ministry of Education for Non-ferrous Materials Science and Engineering, Changsha, 410083, China.
kaust.personCavallo, Luigi
kaust.personCao, Zhen
refterms.dateFOA2019-02-11T10:48:21Z
dc.date.published-online2019-01-30
dc.date.published-print2019-06


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NOTICE: this is the author’s version of a work that was accepted for publication in Applied Catalysis B: Environmental. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Catalysis B: Environmental, [, , (2019-01-30)] DOI: 10.1016/j.apcatb.2019.01.086 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Except where otherwise noted, this item's license is described as NOTICE: this is the author’s version of a work that was accepted for publication in Applied Catalysis B: Environmental. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Catalysis B: Environmental, [, , (2019-01-30)] DOI: 10.1016/j.apcatb.2019.01.086 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/