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dc.contributor.authorChen, Wenxia
dc.contributor.authorZhang, Yiwei
dc.contributor.authorChen, Guangliang
dc.contributor.authorZhou, Yuming
dc.contributor.authorXiang, Xin
dc.contributor.authorOstrikov, Kostya Ken
dc.date.accessioned2019-09-10T02:29:10Z
dc.date.available2019-09-10T02:29:10Z
dc.date.issued2019
dc.identifier.issn2168-0485
dc.identifier.doi10.1021/acssuschemeng.8b06627
dc.identifier.urihttp://hdl.handle.net/10072/387154
dc.description.abstractHydrogen is a source of sustainable and clean energy poised to replace fossil fuels. Bifunctional electrocatalysts are actively pursued to simultaneously drive the two key reactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), for hydrogen production by electrolysis water. One of the most promising candidates based on bimetallic layered double hydroxide salts (LHSs) and cobalt-based organic framework (ZIF-67) suffer from poor interface coupling. Herein, we present a new approach based on fusing NiCo LHSs nanowire arrays with ZIF-67 to fabricate three-dimensional flower-like structures on a Ni–Fe foam support. To improve interfacial coupling and catalytic performance, simple oxidation, carbonization, sulfurization, and selenization are performed to study the effects of different post-treatments and discover the optimum bifunctional electrocatalysts. The optimized S-doped catalyst reveals the highest electrocatalytic characteristic quantified by the low overpotentials of 170 and 100 mV for OER and HER at 10 mA cm–2 in 1 M KOH, respectively. This outstanding electrocatalytic property is ascribed to strong interfacial coupling between the NiCo-LHSs and ZIF-67 derivatives, as well as the rational electronic structures, dense catalytic active sites, and large specific surface area. This work opens new prospects for fabricating efficient and low-cost electrocatalysts for renewable hydrogen energy production.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Chemical Society
dc.relation.ispartofpagefrom8255
dc.relation.ispartofpageto8264
dc.relation.ispartofissue9
dc.relation.ispartofjournalACS Sustainable Chemistry and Engineering
dc.relation.ispartofvolume7
dc.subject.fieldofresearchAnalytical Chemistry
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchChemical Engineering
dc.subject.fieldofresearchcode0301
dc.subject.fieldofresearchcode0502
dc.subject.fieldofresearchcode0904
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsTechnology
dc.subject.keywordsChemistry, Multidisciplinary
dc.subject.keywordsGreen & Sustainable Science & Technology
dc.titleInterface Coupling of Ni-Co Layered Double Hydroxide Nanowires and Cobalt-Based Zeolite Organic Frameworks for Efficient Overall Water Splitting
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationChen, W; Zhang, Y; Chen, G; Zhou, Y; Xiang, X; Ostrikov, KK, Interface Coupling of Ni-Co Layered Double Hydroxide Nanowires and Cobalt-Based Zeolite Organic Frameworks for Efficient Overall Water Splitting, ACS Sustainable Chemistry and Engineering, 2019, 7 (9), pp. 8255-8264
dc.date.updated2019-09-10T02:27:33Z
gro.hasfulltextNo Full Text
gro.griffith.authorOstrikov, Kostya (Ken)


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