Synthesis and adsorption-photodecomposition properties of mesoporous SiO2TiO2/WO3 composite

Shingo Hirata, Aya Inoue, Miki Inada, Junichi Hojo

Research output: Contribution to journalArticlepeer-review

Abstract

Gaseous volatile organic pollutants may be removed from the environment through photocatalysts combined with adsorbents. Herein, a mesoporous SiO2TiO2/WO3 composite was fabricated by the solgel method in order to remove acetaldehyde in the gas phase. TiO2 and WO3 were well-dispersed in the SiO2 matrix. The adsorption-photodecomposition properties of mesoporous SiO2TiO2/WO3 were evaluated through a three-step kinetic analysis, including direct-decomposition, adsorption, and adsorption-decomposition. The composition of WO3 in the SiO2TiO2 increased the acidity and improved the affinity between the photocatalyst and acetaldehyde. This effectively enhanced the initial removal rate of acetaldehyde. The atomization of WO3 further improved the affinity between the photocatalyst and acetaldehyde and enhancing the photodecomposition rate constant.

Original languageEnglish
Pages (from-to)464-469
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume129
Issue number7
DOIs
Publication statusPublished - Jul 1 2021

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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