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Tunable morphology and band gap alteration of CuO-ZnO nanostructures based photocathode for solar photoelectrochemical cells

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dc.citedby5
dc.contributor.authorAlbadarin N.A.en_US
dc.contributor.authorTakriff M.S.en_US
dc.contributor.authorTan S.T.en_US
dc.contributor.authorShahahmadi S.A.en_US
dc.contributor.authorMinggu L.J.en_US
dc.contributor.authorKadhum A.A.H.en_US
dc.contributor.authorYin W.W.en_US
dc.contributor.authorSalehmin M.N.I.en_US
dc.contributor.authorAlkhalqi E.M.en_US
dc.contributor.authorHamid M.A.A.en_US
dc.contributor.authorAmin N.en_US
dc.contributor.authorid57221288294en_US
dc.contributor.authorid7801559144en_US
dc.contributor.authorid57209466790en_US
dc.contributor.authorid55567116600en_US
dc.contributor.authorid35772813400en_US
dc.contributor.authorid35546574700en_US
dc.contributor.authorid57196039580en_US
dc.contributor.authorid55628787200en_US
dc.contributor.authorid57221286458en_US
dc.contributor.authorid55417659700en_US
dc.contributor.authorid7102424614en_US
dc.date.accessioned2023-05-29T08:06:50Z
dc.date.available2023-05-29T08:06:50Z
dc.date.issued2020
dc.descriptionCopper; Copper oxides; Crystallite size; Electrochemical cells; Electrolytes; Electrons; Energy gap; II-VI semiconductors; Morphology; Nanorods; Optical band gaps; Optical correlation; Oxide minerals; Photocathodes; Photocurrents; Photoelectrochemical cells; Sodium sulfate; Surface morphology; Zinc oxide; Free-electron density; Hydrothermal methods; Optical band structure; Optical energy band gap; Photocurrent density; Photoelectrochemicals; Tunable morphologies; ZnO nanostructures; Sulfur compoundsen_US
dc.description.abstractA homogeneous CuO-ZnO nanostructure with tunable morphology and optical band structure is successfully synthesized via a hydrothermal method under the different dopant mole ratios of Cu. The robust correlation between the crystallite size, surface morphology, optical band gap alteration of the synthesized CuO-ZnO and its performance in photoelectrochemical (PEC) activity are investigated and compared to the reference ZnO based photocathode. In this report, it is found that the morphology of hexagonal ZnO nanorod is changed to nanosheet and vertically align CuO-ZnO based nanograss after the Cu incorporation. This result is mainly due to the composition phase change after the excessive incorporation of Cu metal into ZnO lattice. Furthermore, the optical band gap of the sample also presented a bathochromic shifted after the Cu insertion. The measurements on PEC activity of CuO-ZnO nanostructure was performed under the irradiation of a 100 mWcm?2 Xenon light in 0.5M Na2SO4 electrolyte. Among the sample, 0 Zn:1 Cu exhibited a highest photocurrent density which is 5 fold as compared to its reference ZnO samples. This finding could be due to the highest surface active area and lowest optical energy band gap in the 0 Zn:1 Cu nanograss that eventually contributes to a high free electron density that facilitates the charge transport in the photoelectrochemical cells. This novel approach could provide an alternative to the future solar hydrogenation application. � 2020 The Author(s). Published by IOP Publishing Ltden_US
dc.description.natureFinalen_US
dc.identifier.ArtNo125010
dc.identifier.doi10.1088/2053-1591/abd1e6
dc.identifier.issue12
dc.identifier.scopus2-s2.0-85098728538
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85098728538&doi=10.1088%2f2053-1591%2fabd1e6&partnerID=40&md5=5c9bad6d776e31a980829d7cfeebbc42
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25112
dc.identifier.volume7
dc.publisherIOP Publishing Ltden_US
dc.relation.ispartofAll Open Access, Gold
dc.sourceScopus
dc.sourcetitleMaterials Research Express
dc.titleTunable morphology and band gap alteration of CuO-ZnO nanostructures based photocathode for solar photoelectrochemical cellsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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