Preparation and characterization of the Sb-doped TiO2 photocatalysts

Jooho Moon, H. Takagi, Y. Fujishiro, M. Awano

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

Doped TiO2 photocatalysts have been prepared by a coprecipitation method. Uniformly doped nanocrystalline TiO2 of 10-20 nm sizes was synthesized by calcinating the coprecipitated gels at 400-650 °C. Photocatalytic characterization along with the microstructural investigation for each catalyst provides better understanding of the photocatalytic behavior. It was found that the photodegradation of methylene blue (MB) was a complex function of the doping type and its concentration and the microstructural characteristics of the catalysts. Antimony doing significantly improved photocatalytic performance as compared to the undoped TiO2. Post-treatment of the as-precipitated wet doped Ti gels in an organic solvent also increased the surface area, forming approximately 8 nm size doped TiO2 with surface area approximately 149 m2/g. Superior catalytic activity was observed in the Sb-doped TiO2 samples at a doping concentration ranging from 1 to 5 at%. Using the 5 at% Sb-doped TiO2 catalyst treated in butanol, 100 ppm of MB could be decomposed completely within 1 h, which was better than the commercial Degussa P-25.

Original languageEnglish
Pages (from-to)949-955
Number of pages7
JournalJournal of Materials Science
Volume36
Issue number4
DOIs
Publication statusPublished - 2001 Jan 1

Fingerprint

Photocatalysts
Methylene Blue
Catalysts
Gels
Doping (additives)
Antimony
Butanols
Photodegradation
Coprecipitation
Butenes
Organic solvents
Catalyst activity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Moon, Jooho ; Takagi, H. ; Fujishiro, Y. ; Awano, M. / Preparation and characterization of the Sb-doped TiO2 photocatalysts. In: Journal of Materials Science. 2001 ; Vol. 36, No. 4. pp. 949-955.
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Preparation and characterization of the Sb-doped TiO2 photocatalysts. / Moon, Jooho; Takagi, H.; Fujishiro, Y.; Awano, M.

In: Journal of Materials Science, Vol. 36, No. 4, 01.01.2001, p. 949-955.

Research output: Contribution to journalArticle

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