TY - JOUR
T1 - In situ FT-IR studies of adsorption of CO 2 on nanotubes (NT) and platinized nanotubes (Pt-NT)
AU - Bhattacharyya, Kaustava
AU - Danon, Alon
AU - Vijayan, Baiju K.
AU - Gray, Kimberly A.
AU - Weitz, Eric
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84861058497&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861058497&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:84861058497
SN - 0065-7727
JO - ACS National Meeting Book of Abstracts
JF - ACS National Meeting Book of Abstracts
T2 - 242nd ACS National Meeting and Exposition
Y2 - 28 August 2011 through 1 September 2011
ER -