FTIR study of adsorption and reactions of methylamine on powdered TiO2

Li Fen Liao, Wen Chun Wu, Chih Chung Chuang, Jong Liang Lin

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24 Citations (Scopus)


The adsorption, thermal reactions, and photochemistry of methylamine on TiO2 have been investigated using infrared spectroscopy. It is found that methylamine is adsorbed molecularly on TiO2 at 35 °C. Hydrogen exchange occurs between the NH2 group of adsorbed methylamine and surface OH groups. Thermal reactivity of methylamine is enhanced in the presence of O2, producing NH3(g), CO2(g), and other oxygenated compounds. UV irradiation of TiO2 in the presence of methylamine and oxygen generates NH2(g), CO2(g), H2O(g), NCO-(a), and HCOO(a). Possible reaction steps for the photoproducts are discussed.

Original languageEnglish
Pages (from-to)5928-5934
Number of pages7
JournalJournal of Physical Chemistry B
Issue number25
Publication statusPublished - 2001 Jun 28

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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