Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor–Acceptor–Donor Chromophore/Catalyst Assembly
(2018) ACS Energy Letters — Vol. 3, n° 9, p. 2114-2119 (2018)
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- Authors
Leem, Gyu 
Sherman, Benjamin D. Schanze, Kirk S.
- Abstract
- The organic chromophore 2,2′-(benzo[c][1,2,5]thiadiazole-4,7-diyl)bis(thiophene-3-carboxylic acid), T2-BTD, was prepared and investigated along with metal complex [Ru(bda)(pyP)2] (bda = 2,2′-bipyridine-6,6′-dicarboxylate; pyP = 3-(pyridine-4-yloxy)propyl)phosphonic acid), RuC, for light-driven water splitting in dye-sensitized photoelectrochemical cells. The resulting co-loaded organic chromophore plus catalyst surface assembly was evaluated by photocurrent transient measurement and direct O2 detection using a collector–generator cell. The complete SnO2/TiO2 core–shell-based photoanode exhibited an enhanced photocurrent (∼38 μA cm–2) compared to that with only the chromophore (∼24 μA cm–2). A modest Faradaic efficiency of 12% was recorded for O2 generation under 1 sun illumination in pH 3.9, 0.1 M acetate buffer solutions.
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Citations
Eom, Y. K., Nhon, L., Leem, G., Sherman, B. D., Wang, D., Troian-Gautier, L., Kim, S., Kim, J., Meyer, T. J., Reynolds, J. R., & Schanze, K. S. (2018). Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor–Acceptor–Donor Chromophore/Catalyst Assembly. ACS Energy Letters, 3(9), 2114-2119. https://doi.org/10.1021/acsenergylett.8b01020 (Original work published 2018)