TY - JOUR
T1 - Stabilized photoanodes for water oxidation by integration of organic dyes, water oxidation catalysts, and electron-transfer mediators
AU - Wang, Degao
AU - Eberhart, Michael S.
AU - Sheridan, Matthew V.
AU - Hu, Ke
AU - Sherman, Benjamin D.
AU - Nayak, Animesh
AU - Wang, Ying
AU - Marquard, Seth L.
AU - Dares, Christopher J.
AU - Meyer, Thomas J.
N1 - Publisher Copyright:
© 2018 National Academy of Sciences. All Rights Reserved.
PY - 2018/8/21
Y1 - 2018/8/21
N2 - 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 FTOjSnO 2 /TiO 2 j-Org1-j1.1 nm Al 2 O 3 j-RuP 2+ -WOC (water oxidation catalyst) with Org1 (1-cyano-2-(4-(diphenylamino)phenyl)vinyl)phosphonic acid), the mediator RuP 2+ ([Ru(4,4-(PO 3 H 2 ) 2 -2,2-bipyridine)(2,2bipyridine) 2 ] 2+ ), and the WOC, Ru(bda)(py(CH 2 ) (3or10) P(O 3 H) 2 ) 2 (bda is 2,2-bipyridine-6,6-dicarboxylate with x = 3 or 10), solar excitation resulted in photocurrents of ∼500 μA/cm 2 and quantitative O 2 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.
AB - 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 FTOjSnO 2 /TiO 2 j-Org1-j1.1 nm Al 2 O 3 j-RuP 2+ -WOC (water oxidation catalyst) with Org1 (1-cyano-2-(4-(diphenylamino)phenyl)vinyl)phosphonic acid), the mediator RuP 2+ ([Ru(4,4-(PO 3 H 2 ) 2 -2,2-bipyridine)(2,2bipyridine) 2 ] 2+ ), and the WOC, Ru(bda)(py(CH 2 ) (3or10) P(O 3 H) 2 ) 2 (bda is 2,2-bipyridine-6,6-dicarboxylate with x = 3 or 10), solar excitation resulted in photocurrents of ∼500 μA/cm 2 and quantitative O 2 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.
KW - Core/shell
KW - DSPEC
KW - Electron-transfer mediator
KW - Organic dye
KW - Water oxidation
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U2 - 10.1073/pnas.1802903115
DO - 10.1073/pnas.1802903115
M3 - Article
C2 - 30082396
AN - SCOPUS:85051765474
SN - 0027-8424
VL - 115
SP - 8523
EP - 8528
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 34
ER -