A cobalt(ii) quaterpyridine complex as a visible light-driven catalyst for both water oxidation and reduction

Chi-Fai Leung, Siu-Mui Ng, Chi-Chiu Ko, Wai-Lun Man, Jiashou Wu, Lingjing Chen, Tai-Chu Lau

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    198 Citations (Scopus)

    Abstract

    The complex [CoII(qpy)(OH2)2]2+ (qpy = 2,2′:6′,2′′:6′′, 2′′′-quaterpyridine) is an efficient visible light-driven catalyst for both water oxidation and reduction. It catalyses photochemical oxygen evolution from water at pH 8.0 with [RuII(bpy) 3]2+/S2O82- (λ = 457 nm, max TON = 335, bpy = 2,2′-bipyridine). It also catalyses photochemical hydrogen generation from [IrIII(dF(CF 3)ppy)2(dtbbpy)]+/TEOA (dF(CF3)ppy = anion of 2-(2,4-difluorophenyl)-5-trifluoromethylpyridine, dtbbpy = 4,4′-di-tert-butyl-2,2′-bipyridine, TEOA = triethanolamine) in aqueous acetonitrile (λ > 420 nm, max TON = 1730). © 2012 The Royal Society of Chemistry.
    Original languageEnglish
    Pages (from-to)7903-7907
    JournalEnergy and Environmental Science
    Volume5
    Issue number7
    DOIs
    Publication statusPublished - Jul 2012

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