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Soft X-Ray Absorption Spectra In The 0 K Region Of Microporous Carbon And Some Reference Aromatic Compounds

Author

Listed:
  • YASUJI MURAMATSU

    (Japan Atomic Energy Research Institute, 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5148, Japan)

  • KENTARO KURAMOTO

    (Faculty of Science, Himeji Institute of Technology, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan)

  • ERIC M. GULLIKSON

    (Center for X-Ray Optics, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA)

  • RUPERT C. C. PERERA

    (Center for X-Ray Optics, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA)

Abstract

To analyze the oxidation states of the graphitic surface of microporous carbon, soft X-ray absorption spectra in the 0 K region have been obtained for microporous carbon and various aromatic compounds. The aromatic molecules studied are substituted with one or more of the following oxygenated functional groups: hydroxy (–OH), carboxy (–COOH), carbonyl (>C=O), formyl (–CH=O), and ether (–O–). From comparison of the soft X-ray absorption spectra of microporous carbon and of reference aromatic compounds, the most probable chemical bonding states of oxygen in microporous carbon are found to be –COOH and >C(H)=O. Spectral features in the soft X-ray absorption spectra of microporous carbon are well explained by the O2p density of states in these oxygenated functional groups from discrete variational (DV)-Xα molecular orbital calculations.

Suggested Citation

  • Yasuji Muramatsu & Kentaro Kuramoto & Eric M. Gullikson & Rupert C. C. Perera, 2002. "Soft X-Ray Absorption Spectra In The 0 K Region Of Microporous Carbon And Some Reference Aromatic Compounds," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(01), pages 267-270.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:01:n:s0218625x02002178
    DOI: 10.1142/S0218625X02002178
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