Publication:
Phytochemicals assisted green synthesis of copper oxide/cobalt oxide as efficient electrocatalyst for oxygen evolution reaction

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dc.citedby8
dc.contributor.authorSarkar D.K.en_US
dc.contributor.authorSelvanathan V.en_US
dc.contributor.authorMottakin M.en_US
dc.contributor.authorIslam M.A.en_US
dc.contributor.authorAlmohamadi H.en_US
dc.contributor.authorAlharthi N.H.en_US
dc.contributor.authorAkhtaruzzaman M.en_US
dc.contributor.authorid57220704093en_US
dc.contributor.authorid57160057200en_US
dc.contributor.authorid57195305487en_US
dc.contributor.authorid57361246600en_US
dc.contributor.authorid57196063818en_US
dc.contributor.authorid55942800300en_US
dc.contributor.authorid57195441001en_US
dc.date.accessioned2025-03-03T07:44:48Z
dc.date.available2025-03-03T07:44:48Z
dc.date.issued2024
dc.description.abstractElectrocatalytic water splitting is a promising solution to resolve the global energy crisis. Tuning the morphology and elemental composition is a crucial aspect in designing highly-efficient nanomaterials based electrocatalyst for water splitting. Herein, green synthesis using phytochemicals from aloe vera leaves extract was employed to hydrothermally synthesize copper oxide/cobalt oxide nanostructures on nickel foam. The reaction medium was performed in presence of mineralizers of different pH; hydrochloric acid (HCl), citric acid (CA), urea, diethyl amine (DEA) and sodium hydroxide (NaOH) to produce five different compositions of copper oxide/cobalt oxide on nickel foam. Based on FESEM and EDS analysis, it was verified that the plant mediated hydrothermal process yielded interesting morphologies and the elemental composition of the synthesized metal oxide nanostructures distinctly varied with effect to the different mineralizers used. Use of acidic mineralizers such as hydrochloric acid and citric acid favoured formation of copper oxide whereas basic mineralizers such as urea, diethyl amine and sodium hydroxide favoured formation of cobalt oxide. The green synthesis of metal oxide electrode in presence of urea exhibits the best OER electrocatalytic performance with an overpotential of 390 mV, and 453 mV for a current density of 50 mA cm?2 and 100 mA cm?2 respectively. The sample also exhibited sustained stability over 70 h, hence proving that the proposed electrode can serve as an efficient catalyst for electrocatalytic OER. ? 2023 Hydrogen Energy Publications LLCen_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.ijhydene.2023.07.042
dc.identifier.epage712
dc.identifier.scopus2-s2.0-85167790945
dc.identifier.spage700
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85167790945&doi=10.1016%2fj.ijhydene.2023.07.042&partnerID=40&md5=6c612825e184be198643bb21bceca456
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36805
dc.identifier.volume51
dc.pagecount12
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleInternational Journal of Hydrogen Energy
dc.subjectAscorbic acid
dc.subjectCitric acid
dc.subjectCobalt compounds
dc.subjectCopper oxides
dc.subjectElectrocatalysts
dc.subjectElectrodes
dc.subjectEnergy policy
dc.subjectMetabolism
dc.subjectNanostructures
dc.subjectNickel oxide
dc.subjectOxygen
dc.subjectPlants (botany)
dc.subjectSodium hydroxide
dc.subjectAloe vera
dc.subjectDiethylamines
dc.subjectElectrocatalytic
dc.subjectElemental compositions
dc.subjectEnergy crisis
dc.subjectGlobal energy
dc.subjectGreen synthesis
dc.subjectNickel foam
dc.subjectPhytochemical
dc.subjectWater splitting
dc.subjectUrea
dc.titlePhytochemicals assisted green synthesis of copper oxide/cobalt oxide as efficient electrocatalyst for oxygen evolution reactionen_US
dc.typeArticleen_US
dspace.entity.typePublication
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