File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

박영빈

Park, Young-Bin
Functional Intelligent Materials Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.citation.endPage 12662 -
dc.citation.number 10 -
dc.citation.startPage 12651 -
dc.citation.title ACS APPLIED ENERGY MATERIALS -
dc.citation.volume 5 -
dc.contributor.author Khanam, Salma A. -
dc.contributor.author Hoque, Nazimul -
dc.contributor.author Lee, Seonghwan -
dc.contributor.author Park, Young -Bin -
dc.contributor.author Gogoi, Gautam -
dc.contributor.author Bania, Kusum K. -
dc.date.accessioned 2023-12-21T13:37:43Z -
dc.date.available 2023-12-21T13:37:43Z -
dc.date.created 2022-10-20 -
dc.date.issued 2022-10 -
dc.description.abstract Non-noble metal-based electrocatalysts have been designed for effective electrochemical oxidation of methanol in basic medium. The catalyst consisting of nickel (Ni) and cobalt (Co) metals was synthesized with a zeolitic imidazolate framework (ZIF) template approach. Such a method leads to the decoration of cylindrically shaped nickel hydroxides, Ni(OH)2, in nanodimen-sions within the zeolitic crystals of spinel cobalt oxides, Co3O4. The mixed metal hydroxide and oxide, Ni(OH)2-Co3O4, represented good activity toward electrochemical oxidation of methanol in 1 M KOH at a low onset potential. When combined with a carboxylate-functionalized multiwalled carbon nanotube (COOH-MWCNT), the same material, Ni(OH)2-Co3O4, exhibited superior MOR (methanol oxidation reaction) activity, giving a peak current density of 4.2 Amg-1 at similar conditions. The MWCNT-modified catalyst, Ni(OH)2-Co3O4-MWCNT, also showed high stability up to 500 cycles and 25000 s without a significant loss in the current density. The linear dependency of the current density against the square root of the scan rate indicated a diffusion-controlled MOR process. The decrease in onset potential with increasing scan rate also predicted a kinetically favorable MOR process. Fourier transform infrared and Raman analyses suggested that the MOR mechanism proceeded through the adsorption of methanol (CH3OH) on the catalyst surface, and its deprotonation formed the methoxide ion (CH3O-) which in the later course decomposed to CO2 and H2O. The Raman study also showed that, during the electrochemical oxidation process, Co2+ species in Co3O4 transformed to CoOOH and thereby favored the MOR. -
dc.identifier.bibliographicCitation ACS APPLIED ENERGY MATERIALS, v.5, no.10, pp.12651 - 12662 -
dc.identifier.doi 10.1021/acsaem.2c02286 -
dc.identifier.issn 2574-0962 -
dc.identifier.scopusid 2-s2.0-85139525155 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/59759 -
dc.identifier.url https://pubs.acs.org/doi/10.1021/acsaem.2c02286 -
dc.identifier.wosid 000862365500001 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title Tubular Nickel Hydroxide Embedded in Zeolitic Cobalt Oxide for Methanol Oxidation Reaction -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Energy & Fuels; Materials Science -
dc.type.docType Article; Early Access -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor cobalt oxide -
dc.subject.keywordAuthor nickel hydroxide -
dc.subject.keywordAuthor nanotubules -
dc.subject.keywordAuthor electrocatalyst -
dc.subject.keywordAuthor methanol oxidation -
dc.subject.keywordPlus CORE-SHELL -
dc.subject.keywordPlus CO3O4 NANOPARTICLES -
dc.subject.keywordPlus ELECTROCATALYSTS -
dc.subject.keywordPlus SPECTROSCOPY -
dc.subject.keywordPlus REDUCTION -
dc.subject.keywordPlus METAL -
dc.subject.keywordPlus RAMAN -
dc.subject.keywordPlus CHALLENGES -
dc.subject.keywordPlus ALLOY -
dc.subject.keywordPlus IR -

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.