Plasmonic CoO-Decorated Au Nanorods for Photoelectrocatalytic Water Oxidation

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dc.contributor.author Ghosh, Piue
dc.contributor.author Kar, Ashish
dc.contributor.author Khandelwal, Shikha
dc.contributor.author Vyas, Divya
dc.contributor.author Mir, Ab Qayoom
dc.contributor.author Chakraborty, Arup Lal
dc.contributor.author Hegde, Ravi S.
dc.contributor.author Sharma, Sudhanshu
dc.contributor.author Dutta, Arnab
dc.contributor.author Khatua, Saumyakanti
dc.date.accessioned 2019-08-31T09:47:34Z
dc.date.available 2019-08-31T09:47:34Z
dc.date.issued 2019-08
dc.identifier.citation Ghosh, Piue; Kar, Ashish; Khandelwal, Shikha; Vyas, Divya; Mir, Ab Qayoom; Chakraborty, Arup Lal; Hegde, Ravi S.; Sharma, Sudhanshu; Dutta, Arnab and Khatua, Saumyakanti, �Plasmonic CoO-Decorated Au Nanorods for Photoelectrocatalytic Water Oxidation�, ACS Applied Nano Materials, DOI: 10.1021/acsanm.9b01258, Aug. 2019. en_US
dc.identifier.issn 2574-0970
dc.identifier.uri https://doi.org/10.1021/acsanm.9b01258
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4796
dc.description.abstract Harvesting the full bandwidth of the solar spectrum, especially the near infrared portion, remains a challenge for solar-to-fuel conversion technology. Plasmonic nanostructures have recently attracted attention in this connection due to their enhanced yet tunable broadband absorption and photochemical stability. Here we report a nanoplasmonic photocatalytic construct by decorating plasmonic Au Nanorods with CoO for harvesting visible and NIR light via photo-electrochemical water oxidation reaction (WOR). In contrast to previous reports of plasmonic photocatalyst constructs, our structure does not require complicated fabrication or rely on rare-earth heavy-atom elements and exhibits excellent photostability without leaching of either cobalt or gold into the reaction solution under photoelectrochemical conditions. This catalytic construct triggered photo-electrochemical WOR with generation of significant photocurrent (~ 100 �Acm-2) while producing photogenerated oxygen at 18.1 mmoles h-1 of and hydrogen at 40.2 mmoles h-1 (on counter electrode) per miligram of cobalt under broadband excitation of 410-1700 nm with photon to oxygen conversion efficiency of ~0.05% in neutral aqueous conditions. The broadband photocatalytic activity of CoO-decorated Au Nanorod was attributed to the hot holes generated by the photoexcitation of plasmonic gold nanorods.
dc.description.statementofresponsibility by Piue Ghosh, Ashish Kar, Shikha Khandelwal, Divya Vyas, Ab Qayoom Mir, Arup Lal Chakraborty, Ravi S Hegde, Sudhanshu Sharma, Arnab Dutta and Saumyakanti Khatua
dc.language.iso en_US en_US
dc.publisher American Chemical Society en_US
dc.title Plasmonic CoO-Decorated Au Nanorods for Photoelectrocatalytic Water Oxidation en_US
dc.type Article en_US
dc.relation.journal ACS Applied Nano Materials


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