Bio-inspired cobalt catalyst enables natural-sunlight-driven hydrogen production from aerobic neutral aqueous solution

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dc.contributor.author Dolui, Dependu
dc.contributor.author Das, Srewashi
dc.contributor.author Bharti, Jaya
dc.contributor.author Kumar, Shivam
dc.contributor.author Kumar, Pankaj
dc.contributor.author Dutta, Arnab
dc.date.accessioned 2020-02-22T06:10:45Z
dc.date.available 2020-02-22T06:10:45Z
dc.date.issued 2020-01
dc.identifier.citation Dolui, Dependu; Das, Srewashi; Bharti, Jaya; Kumar, Shivam; Kumar, Pankaj and Dutta, Arnab, "Bio-inspired cobalt catalyst enables natural-sunlight-driven hydrogen production from aerobic neutral aqueous solution", Cell Reports Physical Science, DOI: 10.1016/j.xcrp.2019.100007, Jan. 2020. en_US
dc.identifier.issn 2666-3864
dc.identifier.uri http://dx.doi.org/10.1016/j.xcrp.2019.100007
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/5113
dc.description.abstract Hetero-axial cobalt complexes are known for their oxygen-tolerant photocatalytic hydrogen production activity, mostly in organic solvents. Here, variable combinations of peripheral basic groups are explicitly positioned around an existing complex framework to generate an enzyme-inspired minimal outer coordination sphere (OCS) scaffold. This catalyst design strategy yields a series of water-soluble, upgraded versions of imidazole-linked cobaloximes. The presence of fringe protic functionalities ensures the formation of a dynamic and water-mediated proton relay. This appended proton relay allows us to probe imidazole-bound cobaloxime in pure aqueous conditions. It exhibits highly efficient electrocatalytic (TOF ?4,900 s?1) and photocatalytic (TON ?12,000) hydrogen production in neutral water compared to its relatively moderate performance in organic media. The catalyst retains its activity (TON ?22), even under natural sunlight (sunny day in Gandhinagar) in aerobic aqueous solution, emphasizing the importance of OCS features for producing robust, natural-condition-ready, synthetic catalysts.
dc.description.statementofresponsibility by Dependu Dolui, Srewashi Das, Jaya Bharti, Shivam Kumar, Pankaj Kumar and Arnab Dutta
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject cobalt catalyst en_US
dc.subject electrocatalytic H2 production en_US
dc.subject natural-sunlight-driven H2 production en_US
dc.subject outer coordination sphere en_US
dc.subject oxygen tolerant en_US
dc.subject photocatalytic H2 production en_US
dc.title Bio-inspired cobalt catalyst enables natural-sunlight-driven hydrogen production from aerobic neutral aqueous solution en_US
dc.type Article en_US
dc.relation.journal Cell Reports Physical Science


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