Photocatalytic Decomposition of Formic Acid on Mo2C-Containing Catalyst

Gyula Halasi, Tamás Bánsági, Erika Varga, Frigyes Solymosi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The photocatalytic behavior of pure and supported Mo2C was investigated in the vapor-phase decomposition of formic acid. IR studies showed that illumination promoted the dissociation of molecularly adsorbed HCOOH and the decomposition of formate species formed on Mo2C/TiO2 sample. Mo2C prepared on TiO2 enhanced the extent of the photocatalytic decomposition exhibited by TiO2. Both the dehydrogenation and dehydration reactions occurred. Interestingly, Mo2C had photocatalytic properties even in unsupported state and also on an inert SiO2 surface. Its photoactivity was dramatically increased by the presence of potassium prepared by the carburization of K2MoO4, when the dehydrogenation came into prominence. Pure and K-doped Mo2C showed an appreciable photocatalytic effect in the visible light, which was attributed to their lower bandgap. Graphical Abstract: Photocatalytic decomposition of HCOOH on pure and K-doped Mo2C at 300 K. (A) conversion of HCOOH; (B) Formation of CO2; (C) CO/CO2 ratio.[Figure not available: see fulltext.]

Original languageEnglish
Article number1494
Pages (from-to)875-880
Number of pages6
JournalCatalysis Letters
Volume145
Issue number3
DOIs
Publication statusPublished - Mar 4 2015

Keywords

  • Effect of potassium promotor
  • Photo-induced reaction in visible light
  • Photocatalytic decomposition of HCOOH
  • Supported and unsupported MoC catalyst

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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