Surface Chemistry and Radiation Chemistry of Trifluoroiodomethane (CF3I) on Mo(110)

The surface-induced and electron-induced chemistry of trifluoroiodomethane (CF3I), a potential replacement for chlorofluorocarbons (CFCs) and chlorofluorobromocarbons (halons), were investigated under ultrahigh vacuum conditions (p ∼ 1 × 10-10 Torr) on Mo(110). Results of temperature-programmed deso...

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Published in:The journal of physical chemistry. B 2004-04, Vol.108 (13), p.4080-4085
Main Authors: Nakayama, Nozomi, Ferrenz, Elizabeth E, Ostling, Denise R, Nichols, Andrea S, Faulk, Janelle F, Arumainayagam, Christopher R
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cited_by cdi_FETCH-LOGICAL-a295t-507980a0764ffb7293c2d9e1526ca58d4ca6328de46793da410f77626b18dc983
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container_title The journal of physical chemistry. B
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description The surface-induced and electron-induced chemistry of trifluoroiodomethane (CF3I), a potential replacement for chlorofluorocarbons (CFCs) and chlorofluorobromocarbons (halons), were investigated under ultrahigh vacuum conditions (p ∼ 1 × 10-10 Torr) on Mo(110). Results of temperature-programmed desorption (TPD) experiments indicate that dissociative adsorption of CF3I leads only to nonselective decomposition on Mo(110), in contrast to reactions of CF3I on other metal surfaces. Desorption of CF3 radicals and atomic iodine was detected mass spectrometrically during low-energy (10−100 eV) electron irradiation of four monolayer thick films of CF3I condensed at 100 K. Results of postirradiation temperature-programmed desorption experiments were used to identify CF2I2, C2F5I, C2F6, C2F4I2, and CFI3 as electron-induced reaction products of CF3I. Except for CFI3, all of these electron-induced reaction products of CF3I have been previously identified in γ-radiolysis studies, supporting our earlier claim that temperature-programmed desorption experiments conducted following low-energy electron irradiation of multilayer thin films provide an effective method to investigate the effects of high-energy radiation, including radical−radical reactions.
doi_str_mv 10.1021/jp0310192
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title Surface Chemistry and Radiation Chemistry of Trifluoroiodomethane (CF3I) on Mo(110)
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