Photoassisted overall water splitting in a visible light-absorbing dye-sensitized photoelectrochemical cell

Journal of the American Chemical Society
W Justin YoungbloodThomas E Mallouk

Abstract

Iridium oxide nanoparticles stabilized by a heteroleptic ruthenium tris(bipyridyl) dye were used as sensitizers in photoelectrochemical cells consisting of a nanocrystalline anatase anode and a Pt cathode. The dye coordinated the IrO(2) x nH(2)O nanoparticles through a malonate group and the porous TiO(2) electrode through phosphonate groups. Under visible illumination (lambda > 410 nm) in pH 5.75 aqueous buffer, oxygen was generated at anode potentials positive of -325 mV vs Ag/AgCl and hydrogen was generated at the cathode. The internal quantum yield for photocurrent generation was ca. 0.9%. Steady-state luminescence and time-resolved flash photolysis/transient absorbance experiments were done to measure the rates of forward and back electron transfer. The low quantum yield for overall water splitting in this system can be attributed to slow electron transfer (approximately 2.2 ms) from IrO(2) x nH(2)O to the oxidized dye. Forward electron transfer does not compete effectively with the back electron transfer reaction from TiO(2) to the oxidized dye, which occurred on a time scale of 0.37 ms.

References

Nov 20, 2001·Nature·M Grätzel
Sep 15, 2005·Journal of the American Chemical Society·Ruifa Zong, Randolph P Thummel
Mar 17, 2006·Nature·Kazuhiko MaedaKazunari Domen
Dec 8, 2007·Journal of the American Chemical Society·Neal D McDanielStefan Bernhard
Aug 5, 2008·Angewandte Chemie·Robin BrimblecombeLeone Spiccia
Nov 14, 2008·Proceedings of the National Academy of Sciences of the United States of America·Javier J ConcepcionThomas J Meyer

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Citations

Feb 2, 2012·ACS Applied Materials & Interfaces·Kathryn E deKrafftWenbin Lin
Apr 26, 2012·Chemical Reviews·Clémence QueffélecBruno Bujoli
Feb 24, 2012·Inorganic Chemistry·William B HeuerGerald J Meyer
May 22, 2013·Inorganic Chemistry·Timothy P BrewsterRobert H Crabtree
Nov 6, 2013·Inorganic Chemistry·Michael R NorrisThomas J Meyer
May 6, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Vito CristinoCarlo Alberto Bignozzi
Nov 24, 2011·Nature Materials·Suljo LinicDavid B Ingram
Apr 29, 2010·Chemical Communications : Chem Comm·Michele OrlandiFranco Scandola
Aug 11, 2010·Chemical Communications : Chem Comm·Yunhua XuLicheng Sun
May 2, 2012·Proceedings of the National Academy of Sciences of the United States of America·Yixin ZhaoThomas E Mallouk
Jun 14, 2012·Proceedings of the National Academy of Sciences of the United States of America·William R McNamaraRichard Eisenberg
Sep 29, 2012·Proceedings of the National Academy of Sciences of the United States of America·Javier J ConcepcionThomas J Meyer
Oct 2, 2013·Proceedings of the National Academy of Sciences of the United States of America·Amit DasRichard Eisenberg
Jul 3, 2013·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Anthony Harriman
Feb 12, 2013·Photosynthesis Research·Benjamin D ShermanThomas A Moore
Jan 16, 2014·Annual Review of Physical Chemistry·Jason B BaxterCharles A Schmuttenmaer
Jan 9, 2016·Journal of the American Chemical Society·Kevin A ClickYiying Wu
Jan 15, 2015·Proceedings of the National Academy of Sciences of the United States of America·John R SwierkThomas E Mallouk
Jun 28, 2015·Proceedings of the National Academy of Sciences of the United States of America·Bo ZhengRichard Eisenberg
Nov 19, 2015·Journal of the American Chemical Society·Pauline BornozKevin Sivula
Oct 30, 2015·Chemical Reviews·Dennis L AshfordThomas J Meyer
Dec 31, 2014·Journal of Photochemistry and Photobiology. B, Biology·Roger BofillXavier Sala
Mar 26, 2016·The Journal of Physical Chemistry. a·Amendra FernandoChristine M Aikens
Sep 15, 2015·Nature Communications·Hyunah KimKisuk Kang
Aug 20, 2015·Journal of the American Chemical Society·Alexey V AkimovOleg V Prezhdo
Apr 29, 2015·Proceedings of the National Academy of Sciences of the United States of America·Leila AlibabaeiThomas J Meyer
Jun 11, 2010·Chemistry & Biology·Iain McConnellGary W Brudvig
Mar 12, 2015·Nature Communications·Stafford W SheehanCharles A Schmuttenmaer
Apr 30, 2016·ACS Applied Materials & Interfaces·Robert Welch CallRene Lopez
Jul 23, 2016·ACS Applied Materials & Interfaces·Michele OrlandiAntonio Miotello
Sep 23, 2016·Journal of the American Chemical Society·M Kyle BrennamanThomas J Meyer
Sep 23, 2016·Journal of the American Chemical Society·Weibin ChuJin Zhao

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