Accession Number : ADA258535
Title : Interaction of Hydrogen and Water with Diamond (100): Infrared Spectroscopy.
Descriptive Note : Technical rept.,
Corporate Author : RICE UNIV HOUSTON TX DEPT OF CHEMISTRY
Personal Author(s) : Struck, Lisa M ; D'Evelyn, Mark P
Report Date : Dec 1992
Pagination or Media Count : 15
Abstract : We report the first investigation of the adsorption of deuterium and water on diamond (100) by infrared multiple-internal-reflection spectroscopy using a natural type IIa diamond internal reflection element. Infrared evidence was seen for the monohydride surface structure, with one hydrogen atom per surface carbon atom (Delta CD mode at 901 cm-1), while the dihydride (CD2) structure was not observed. Following exposure to water at elevated temperature, infrared absorption features were detected at 1280, 1200, 1125, 1080, and 720 cm-l, and are assigned to ether (C-O-C), hydroxyl (C-OH), and carbonyl (C=O) modes. The substantial observed reactivity of diamond with water indicates a potentially important role for surface hydroxyl and oxide species in the surface chemistry and morphological development of CVD diamond films.
Descriptors : *INFRARED SPECTROSCOPY , *INTERACTIONS , *WATER , *HYDROGEN , *DIAMONDS , *SURFACE CHEMISTRY , TEMPERATURE , ADSORPTION , FILMS , ATOMS , REFLECTION , HYDROXYL RADICALS , ABSORPTION , DEUTERIUM , ETHERS , INTERNAL , OXIDES , DEPOSITION , CHEMISTRY , SURFACES , INTERNAL REFLECTION , CARBON , VAPOR DEPOSITION , REACTIVITIES , STRUCTURES , VAPORS , CHEMICALS , SPECTROSCOPY
Subject Categories : Inorganic Chemistry
Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE