In situ FT-IR studies of adsorption of CO 2 on nanotubes (NT) and platinized nanotubes (Pt-NT)

Kaustava Bhattacharyya*, Alon Danon, Baiju K. Vijayan, Kimberly A. Gray, Eric Weitz

*Corresponding author for this work

Research output: Contribution to journalConference article


Efficient photocatalytic recycling of CO 2 into a hydrocarbon fuel is an important scientific and societal goal. Adsorption of CO 2 on photocatalysts is a crucial step in this process. FT-IR studies of CO 2 adsorption on titania nanotubes (NT) and Pt-NT (Pt-dispersed on NT) were undertaken to probe the nature of adsorption sites, and to investigate thermal reactions on the surfaces of these materials. The NTs and Pt-Nts were oxidized at 350° C and subsequently cooled to room temperature. The NTs and Pt-Nts were then either exposed to CO 2, or to H 2 at 350° C and then to CO 2. Exposure to CO 2 leads to formation of monodentate carbonates, bidentate carbonates and bicarbonates on both the NTs and Pt-NTs. The marked difference in the infrared spectra of the NTs and the Pt-NTs subsequent to interaction with CO 2 will be discussed as will XPS data for these materials.

Original languageEnglish (US)
JournalACS National Meeting Book of Abstracts
StatePublished - Dec 1 2011
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: Aug 28 2011Sep 1 2011

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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