Suppressed photoelectrochemistry at carbon-surface-modified mesoporous TiO2 films

Anne Vuorema; James J Walsh; Mika Sillanpaa; Wim Thielemans; Robert J Forster; Frank Marken

doi:10.1016/j.electacta.2011.10.025

Suppressed photoelectrochemistry at carbon-surface-modified mesoporous TiO2 films

Anne Vuorema, James J Walsh, Mika Sillanpaa, Wim Thielemans, Robert J Forster, Frank Marken

Department of Chemistry

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

9 Citations (SciVal)

Abstract

Cellulose nano-whiskers or nanocrystals are used as a carbon source in a vacuum graphitisation process to surface-modify nano-TiO2 and influence its photoreactivity. In sharp contrast to bulk carbon-modified TiO2 materials, introducing cellulose in a controlled way, i.e., a layer-by-layer deposition process, allows thin film materials to be created with low graphite content, but with strongly suppressed responses to light. The effect is explained by highly effective surface recombination and demonstrated for the I3 -/I- redox system in acetonitrile and for the photo-oxidation of acetate in aqueous media.

Original language	English
Pages (from-to)	31-35
Journal	Electrochimica Acta
Volume	73
DOIs	https://doi.org/10.1016/j.electacta.2011.10.025
Publication status	Published - 1 Jul 2012

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10.1016/j.electacta.2011.10.025

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title = "Suppressed photoelectrochemistry at carbon-surface-modified mesoporous TiO2 films",

abstract = "Cellulose nano-whiskers or nanocrystals are used as a carbon source in a vacuum graphitisation process to surface-modify nano-TiO2 and influence its photoreactivity. In sharp contrast to bulk carbon-modified TiO2 materials, introducing cellulose in a controlled way, i.e., a layer-by-layer deposition process, allows thin film materials to be created with low graphite content, but with strongly suppressed responses to light. The effect is explained by highly effective surface recombination and demonstrated for the I3 -/I- redox system in acetonitrile and for the photo-oxidation of acetate in aqueous media.",

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AU - Vuorema, Anne

AU - Walsh, James J

AU - Sillanpaa, Mika

AU - Thielemans, Wim

AU - Forster, Robert J

AU - Marken, Frank

PY - 2012/7/1

Y1 - 2012/7/1

N2 - Cellulose nano-whiskers or nanocrystals are used as a carbon source in a vacuum graphitisation process to surface-modify nano-TiO2 and influence its photoreactivity. In sharp contrast to bulk carbon-modified TiO2 materials, introducing cellulose in a controlled way, i.e., a layer-by-layer deposition process, allows thin film materials to be created with low graphite content, but with strongly suppressed responses to light. The effect is explained by highly effective surface recombination and demonstrated for the I3 -/I- redox system in acetonitrile and for the photo-oxidation of acetate in aqueous media.

AB - Cellulose nano-whiskers or nanocrystals are used as a carbon source in a vacuum graphitisation process to surface-modify nano-TiO2 and influence its photoreactivity. In sharp contrast to bulk carbon-modified TiO2 materials, introducing cellulose in a controlled way, i.e., a layer-by-layer deposition process, allows thin film materials to be created with low graphite content, but with strongly suppressed responses to light. The effect is explained by highly effective surface recombination and demonstrated for the I3 -/I- redox system in acetonitrile and for the photo-oxidation of acetate in aqueous media.

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VL - 73

SP - 31

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JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Suppressed photoelectrochemistry at carbon-surface-modified mesoporous TiO2 films

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Raman confocal microscope RENISHAM INVIA

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Suppressed photoelectrochemistry at carbon-surface-modified mesoporous TiO2 films

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Raman confocal microscope RENISHAM INVIA

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