Photocatalytic decompositions of methanol and ethanol on Au supported by pure or N-doped TiO2

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Abstract

The effects of Au particles of different sizes were investigated on the photocatalytic decompositions of methanol and ethanol on pure or N-doped TiO2. IR studies revealed that the deposition of Au promoted the dissociation of both compounds during illumination and also resulted in the formation of formate species. Whereas the photo-induced decompositions of methanol and ethanol occurred to only a limited extent on pure TiO2, the deposition of Au, particularly as nanosized particles, markedly enhanced the rate and the extent of the photocatalyzed reactions. An interesting feature of the photodecomposition of methanol was that, besides H2, CO 2 and CO, a significant amount of methyl formate was also produced. Addition of H2O or O2 to the alcohol in both cases decreased the level of CO formed, and in the case of methanol CO was completely eliminated. Au particles on N-doped TiO2 with a lower bandgap catalyzed the photodecompositions of both compounds even in visible light.

Original languageEnglish
Pages (from-to)45-55
Number of pages11
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume271
DOIs
Publication statusPublished - 2013

Fingerprint

Carbon Monoxide
Methanol
Ethanol
ethyl alcohol
methyl alcohol
Decomposition
decomposition
photodecomposition
formic acid
formates
Energy gap
alcohols
Alcohols
Lighting
illumination
dissociation

Keywords

  • Au/TiO catalyst
  • Effect of N-doping
  • Ethyl alcohol
  • Methyl alcohol
  • Methyl formate
  • Photolysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

Cite this

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title = "Photocatalytic decompositions of methanol and ethanol on Au supported by pure or N-doped TiO2",
abstract = "The effects of Au particles of different sizes were investigated on the photocatalytic decompositions of methanol and ethanol on pure or N-doped TiO2. IR studies revealed that the deposition of Au promoted the dissociation of both compounds during illumination and also resulted in the formation of formate species. Whereas the photo-induced decompositions of methanol and ethanol occurred to only a limited extent on pure TiO2, the deposition of Au, particularly as nanosized particles, markedly enhanced the rate and the extent of the photocatalyzed reactions. An interesting feature of the photodecomposition of methanol was that, besides H2, CO 2 and CO, a significant amount of methyl formate was also produced. Addition of H2O or O2 to the alcohol in both cases decreased the level of CO formed, and in the case of methanol CO was completely eliminated. Au particles on N-doped TiO2 with a lower bandgap catalyzed the photodecompositions of both compounds even in visible light.",
keywords = "Au/TiO catalyst, Effect of N-doping, Ethyl alcohol, Methyl alcohol, Methyl formate, Photolysis",
author = "Andrea Gazsi and G. Schubert and T. B{\'a}ns{\'a}gi and F. Solymosi",
year = "2013",
doi = "10.1016/j.jphotochem.2013.08.009",
language = "English",
volume = "271",
pages = "45--55",
journal = "Journal of Photochemistry and Photobiology A: Chemistry",
issn = "1010-6030",
publisher = "Elsevier",

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TY - JOUR

T1 - Photocatalytic decompositions of methanol and ethanol on Au supported by pure or N-doped TiO2

AU - Gazsi, Andrea

AU - Schubert, G.

AU - Bánsági, T.

AU - Solymosi, F.

PY - 2013

Y1 - 2013

N2 - The effects of Au particles of different sizes were investigated on the photocatalytic decompositions of methanol and ethanol on pure or N-doped TiO2. IR studies revealed that the deposition of Au promoted the dissociation of both compounds during illumination and also resulted in the formation of formate species. Whereas the photo-induced decompositions of methanol and ethanol occurred to only a limited extent on pure TiO2, the deposition of Au, particularly as nanosized particles, markedly enhanced the rate and the extent of the photocatalyzed reactions. An interesting feature of the photodecomposition of methanol was that, besides H2, CO 2 and CO, a significant amount of methyl formate was also produced. Addition of H2O or O2 to the alcohol in both cases decreased the level of CO formed, and in the case of methanol CO was completely eliminated. Au particles on N-doped TiO2 with a lower bandgap catalyzed the photodecompositions of both compounds even in visible light.

AB - The effects of Au particles of different sizes were investigated on the photocatalytic decompositions of methanol and ethanol on pure or N-doped TiO2. IR studies revealed that the deposition of Au promoted the dissociation of both compounds during illumination and also resulted in the formation of formate species. Whereas the photo-induced decompositions of methanol and ethanol occurred to only a limited extent on pure TiO2, the deposition of Au, particularly as nanosized particles, markedly enhanced the rate and the extent of the photocatalyzed reactions. An interesting feature of the photodecomposition of methanol was that, besides H2, CO 2 and CO, a significant amount of methyl formate was also produced. Addition of H2O or O2 to the alcohol in both cases decreased the level of CO formed, and in the case of methanol CO was completely eliminated. Au particles on N-doped TiO2 with a lower bandgap catalyzed the photodecompositions of both compounds even in visible light.

KW - Au/TiO catalyst

KW - Effect of N-doping

KW - Ethyl alcohol

KW - Methyl alcohol

KW - Methyl formate

KW - Photolysis

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U2 - 10.1016/j.jphotochem.2013.08.009

DO - 10.1016/j.jphotochem.2013.08.009

M3 - Article

VL - 271

SP - 45

EP - 55

JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

SN - 1010-6030

ER -