Enhanced visible-light photocatalytic H₂ production by ZnₓCd₁−ₓS modified with earth-abundant nickel-based cocatalysts

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dc.contributor.authorRan, J.
dc.contributor.authorZhang, J.
dc.contributor.authorYu, J.
dc.contributor.authorQiao, S.
dc.date.issued2014
dc.description.abstractThe application of various earth-abundant Ni species, such as NiS, Ni, Ni, OH, and NiO, as a co-catalyst in a ZnxCd, xS system for visible-light photocatalytic H, production was investigated for the first time. The loading of Ni or NiS enhanced the photocatalytic activity of ZnxCd, xS because they could promote the electron transfer at the interface with ZnxCd, xS and catalyze the H, evolution. Surprisingly, Ni, OH, -loaded ZnxCd, xS exhibits a very high photocatalytic H, -production rate of,  μmol h,  g, with a quantum efficiency of, ., at,  nm, which represents one of the most efficient metal sulfide photocatalysts without a Pt co-catalyst to date. This outstanding activity arises from the pronounced synergetic effect between Ni, OH, and metallic Ni formed in situ during the photocatalytic reaction. However, the loading of NiO deactivated the activity of ZnxCd, xS because of their unmatched conduction band positions. This paper reports the optimization of the ZnxCd, xS system by selecting an appropriate Ni-based co-catalyst, Ni, OH, from a series of Ni species to achieve the highest photocatalytic H, -production activity for the first time and also reveals the roles of these Ni species in the photocatalytic activity.
dc.description.statementofresponsibilityJingrun Ran, Jun Zhang, Jiaguo Yu, and Shi Zhang Qiao
dc.identifier.citationChemSusChem, 2014; 7(12):3426-3434
dc.identifier.doi10.1002/cssc.201402574
dc.identifier.issn1864-5631
dc.identifier.issn1864-564X
dc.identifier.orcidRan, J. [0009-0009-1588-6215]
dc.identifier.orcidQiao, S. [0000-0002-1220-1761] [0000-0002-4568-8422]
dc.identifier.urihttp://hdl.handle.net/2440/100941
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/DP1095861
dc.relation.granthttp://purl.org/au-research/grants/arc/DP130104459
dc.rights© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.source.urihttps://doi.org/10.1002/cssc.201402574
dc.subjectheterogeneous catalysis; hydrongen; nickel; photochemistry; water splitting
dc.titleEnhanced visible-light photocatalytic H₂ production by ZnₓCd₁−ₓS modified with earth-abundant nickel-based cocatalysts
dc.title.alternativeEnhanced visible-light photocatalytic H(2) production by Zn(x)Cd(1)-(x)S modified with earth-abundant nickel-based cocatalysts
dc.typeJournal article
pubs.publication-statusPublished

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