Photocatalytic decomposition of formic acid and methyl formate on TiO 2 doped with N and promoted with Au. Production of H2

Andrea Gazsi, G. Schubert, Péter Pusztai, F. Solymosi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The photo-induced vapor-phase decompositions of formic acid and methyl formate were investigated on pure, N-doped and Au-promoted TiO2. Infrared (IR) spectroscopic studies revealed that illumination initiated the decomposition of adsorbed formate formed in the dissociation of formic acid and located mainly on TiO2. The photocatalytic decompositions of formic acid and methyl formate vapor on pure TiO2 occurred to only a limited extent. The deposition of Au on pure or doped TiO2 markedly enhanced the extent of photocatalytic decomposition of formic acid. The main process was dehydrogenation to give H2 and CO2. The formation of CO occurred to only a very small extent. Addition of O2 or H 2O to the formic acid decreased the CO level from ∼0.8% to ∼0.088%. Similar features were experienced in the photocatalytic decomposition of methyl formate, which dissociated in part to give surface formate. Experiments over Au deposited on N-doped TiO2 revealed that the photo-induced decomposition of both compounds occurs even in visible light.

Original languageEnglish
Pages (from-to)7756-7766
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number19
DOIs
Publication statusPublished - Jun 27 2013

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Formic acid
formic acid
formates
Decomposition
decomposition
Vapors
Dehydrogenation
dehydrogenation
Lighting
illumination
dissociation
vapors
vapor phases
Infrared radiation
Experiments

Keywords

  • Au/TiO catalyst
  • Effect of N-doping
  • Formic acid
  • Methyl formate
  • Photolysis

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Photocatalytic decomposition of formic acid and methyl formate on TiO 2 doped with N and promoted with Au. Production of H2 . / Gazsi, Andrea; Schubert, G.; Pusztai, Péter; Solymosi, F.

In: International Journal of Hydrogen Energy, Vol. 38, No. 19, 27.06.2013, p. 7756-7766.

Research output: Contribution to journalArticle

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