文章基本信息

标题：Stabilized photoanodes for water oxidation by integration of organic dyes, water oxidation catalysts, and electron-transfer mediators
作者：Degao Wang ; Michael S. Eberhart ; Matthew V. Sheridan 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2018
卷号：115
期号：34
页码：8523-8528
DOI：10.1073/pnas.1802903115
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Stabilized photoanodes for light-driven water oxidation have been prepared on nanoparticle core/shell electrodes with surface-stabilized donor–acceptor chromophores, a water oxidation catalyst, and an electron-transfer mediator. For the electrode, fluorine-doped tin oxide FTO|SnO₂/TiO₂|-Org1-|1.1 nm Al₂O₃|-RuP²⁺-WOC (water oxidation catalyst) with Org1 (1-cyano-2-(4-(diphenylamino)phenyl)vinyl)phosphonic acid), the mediator RuP²⁺ ([Ru(4,4-(PO₃H₂)₂-2,2-bipyridine)(2,2-bipyridine)₂]²⁺), and the WOC, Ru(bda)(py(CH₂)_(3or10)P(O₃H)₂)₂ (bda is 2,2-bipyridine-6,6-dicarboxylate with x = 3 or 10), solar excitation resulted in photocurrents of ∼500 µA/cm² and quantitative O₂ evolution at pH 4.65. Related results were obtained for other Ru(II) polypyridyl mediators. For the organic dye PP (5-(4-(dihydroxyphosphoryl)phenyl)-10,15,20-Tris(mesityl)porphyrin), solar water oxidation occurred with a driving force near 0 V.
关键词：core/shell ; water oxidation ; electron-transfer mediator ; DSPEC ; organic dye