Visible light promoted photocatalytic water oxidation: effect of fluctuating light intensity upon reaction efficiency

Dominic Walsh; Pascaline Patureau; Julia  Walton; Jason Potticary; Simon R. Hall; Mark T. Weller

doi:10.1039/C6RA22906A

Visible light promoted photocatalytic water oxidation: effect of fluctuating light intensity upon reaction efficiency

Dominic Walsh, Pascaline Patureau, Julia Walton, Jason Potticary, Simon R. Hall, Mark T. Weller

University of Bristol

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Abstract

Visible light promoted photocatalytic water oxidations were conducted with a synthesized iron oxide nanoparticulate catalyst together with a [Ru(bpy)3]2+ light harvesting dye and electron acceptor. With highest intensity set at daylight equivalent levels, the effects of fluctuating illumination upon ongoing reactions were studied and gaseous O2 and proton production measured. A light oscillation cycle was identified that significantly increased reaction TOF and quantum yields, which is suggested to arise from improvements in synchronization of the cyclic reaction steps and minimization of light sensitizer self-decomposition.

Original language	English
Pages (from-to)	97363-97366
Number of pages	4
Journal	RSC Advances
Volume	6
Early online date	7 Oct 2016
DOIs	https://doi.org/10.1039/C6RA22906A
Publication status	Published - 2016

Keywords

Photcatalysis
Solar fuels

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abstract = "Visible light promoted photocatalytic water oxidations were conducted with a synthesized iron oxide nanoparticulate catalyst together with a [Ru(bpy)3]2+ light harvesting dye and electron acceptor. With highest intensity set at daylight equivalent levels, the effects of fluctuating illumination upon ongoing reactions were studied and gaseous O2 and proton production measured. A light oscillation cycle was identified that significantly increased reaction TOF and quantum yields, which is suggested to arise from improvements in synchronization of the cyclic reaction steps and minimization of light sensitizer self-decomposition.",

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author = "Dominic Walsh and Pascaline Patureau and Julia Walton and Jason Potticary and Hall, {Simon R.} and Weller, {Mark T.}",

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T1 - Visible light promoted photocatalytic water oxidation

T2 - effect of fluctuating light intensity upon reaction efficiency

AU - Walsh, Dominic

AU - Patureau, Pascaline

AU - Walton, Julia

AU - Potticary, Jason

AU - Hall, Simon R.

AU - Weller, Mark T.

PY - 2016

Y1 - 2016

N2 - Visible light promoted photocatalytic water oxidations were conducted with a synthesized iron oxide nanoparticulate catalyst together with a [Ru(bpy)3]2+ light harvesting dye and electron acceptor. With highest intensity set at daylight equivalent levels, the effects of fluctuating illumination upon ongoing reactions were studied and gaseous O2 and proton production measured. A light oscillation cycle was identified that significantly increased reaction TOF and quantum yields, which is suggested to arise from improvements in synchronization of the cyclic reaction steps and minimization of light sensitizer self-decomposition.

AB - Visible light promoted photocatalytic water oxidations were conducted with a synthesized iron oxide nanoparticulate catalyst together with a [Ru(bpy)3]2+ light harvesting dye and electron acceptor. With highest intensity set at daylight equivalent levels, the effects of fluctuating illumination upon ongoing reactions were studied and gaseous O2 and proton production measured. A light oscillation cycle was identified that significantly increased reaction TOF and quantum yields, which is suggested to arise from improvements in synchronization of the cyclic reaction steps and minimization of light sensitizer self-decomposition.

KW - Photcatalysis

KW - Solar fuels

UR - http://dx.doi.org/10.1039/C6RA22906A

U2 - 10.1039/C6RA22906A

DO - 10.1039/C6RA22906A

M3 - Article

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VL - 6

SP - 97363

EP - 97366

JO - RSC Advances

JF - RSC Advances

ER -

Visible light promoted photocatalytic water oxidation: effect of fluctuating light intensity upon reaction efficiency

Abstract

Keywords

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