Interaction of Hydrogen and Water with Diamond (100): Infrared Spectroscopy.

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA258535

Entities

People

  • Lisa M. Struck
  • Mark P. D'evelyn

Organizations

  • Rice University

Tags

DTIC Thesaurus Topics

  • Absorption
  • Adsorption
  • Chemical Vapor Deposition
  • Chemistry
  • Deuterium
  • Diamond Films
  • Films
  • Hydrogen
  • Infrared Spectra
  • Infrared Spectroscopy
  • Materials
  • Materials Science
  • New York
  • Spectra
  • Spectroscopy
  • Surface Chemistry
  • Vapor Deposition

Fields of Study

  • Chemistry

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science and Engineering.