Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor-Acceptor-Donor Chromophore/Catalyst Assembly

Yu Kyung Eom; Linda Nhon; Gyu Leem; Benjamin D. Sherman; Degao Wang; Ludovic Troian-Gautier; Soojin Kim; Jinheung Kim; Thomas J. Meyer; John R. Reynolds; Kirk S. Schanze

doi:10.1021/acsenergylett.8b01020

Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor-Acceptor-Donor Chromophore/Catalyst Assembly

Yu Kyung Eom, Linda Nhon, Gyu Leem, Benjamin D. Sherman, Degao Wang, Ludovic Troian-Gautier, Soojin Kim, Jinheung Kim, Thomas J. Meyer, John R. Reynolds, Kirk S. Schanze

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

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.

Original language	English
Pages (from-to)	2114-2119
Number of pages	6
Journal	ACS Energy Letters
Volume	3
Issue number	9
DOIs	https://doi.org/10.1021/acsenergylett.8b01020
State	Published - 14 Sep 2018

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Publisher Copyright:
© 2018 American Chemical Society.

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title = "Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor-Acceptor-Donor Chromophore/Catalyst Assembly",

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.",

author = "Eom, {Yu Kyung} and Linda Nhon and Gyu Leem and Sherman, {Benjamin D.} and Degao Wang and Ludovic Troian-Gautier and Soojin Kim and Jinheung Kim and Meyer, {Thomas J.} and Reynolds, {John R.} and Schanze, {Kirk S.}",

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year = "2018",

month = sep,

day = "14",

doi = "10.1021/acsenergylett.8b01020",

language = "English",

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T1 - Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor-Acceptor-Donor Chromophore/Catalyst Assembly

AU - Eom, Yu Kyung

AU - Nhon, Linda

AU - Leem, Gyu

AU - Sherman, Benjamin D.

AU - Wang, Degao

AU - Troian-Gautier, Ludovic

AU - Kim, Soojin

AU - Kim, Jinheung

AU - Meyer, Thomas J.

AU - Reynolds, John R.

AU - Schanze, Kirk S.

PY - 2018/9/14

Y1 - 2018/9/14

N2 - 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.

AB - 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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IS - 9

ER -

Visible-Light-Driven Photocatalytic Water Oxidation by a π-Conjugated Donor-Acceptor-Donor Chromophore/Catalyst Assembly

Abstract

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