Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Interaction of Molybdenum Oxide with Titania : Raman Spectroscopic Study

  • Hack Sung Kim (Department of Chemistry, College of Natural Sciences, Seoul National University) ;
  • Sang Hoon Han (Department of Chemistry, College of Natural Sciences, Seoul National University) ;
  • Kwan Kim (Department of Chemistry, College of Natural Sciences, Seoul National University)
  • Published : 1991.04.20
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Abstract

Laser Raman spectroscopy has been used to study the interaction of $MoO_3$ with $TiO_2$. The bulk molybdenum oxide appeared to spread on the surface of titania under the submonolayer coverage. The surface polymolybdate was observed to be very stable with respect to the repeated treatment of reduction and subsequent calcination. Owing to the interaction of molybdate and titania, the phase transformation of $TiO_2$ seemed to be strongly retarded. The additives such as Co and Ni reacted readily with $MoO_3$ to form the corresponding molybdate salts. Nevertheless, the polymolybdate species appeared to be more stable on the titania surface than the molybdate salts.

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