Preparation of solid acid carbon coating on the surface of TiO2 by photo-CVD of gaseous aromatic hydrocarbons

Akira Nakajima, Katsuhiro Horie, Michikazu Hara, Masaaki Kitano, Toshihiro Isobe, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Properties of a solid acid carbon coating prepared on TiO2 powder surface using photochemical vapor deposition (photo-CVD) were evaluated. The TiO2 powder surface became brown during UV illumination under a flowing xylene and xylene sulfonic acid mixture. Observation by TEM revealed an amorphous carbon coating on the TiO2 powder. Sulfonate groups were identified on the coating using FT-IR. A chart of NH3-TPD measurements showed two peaks: that at high temperature was attributed to the coating's strong acid. The carbon coating's acidity was equivalent to that of the solid superacid carbon powder and the carbon-coated TiO2 decomposed cellulose.

Original languageEnglish
Pages (from-to)1670-1673
Number of pages4
JournalCatalysis Communications
Issue number13
Publication statusPublished - Jul 25 2009
Externally publishedYes


  • Carbon
  • Deactivation
  • Photocatalyst
  • Solid acid
  • TiO

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Process Chemistry and Technology


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