SiO2 (core)-TiO2 (shell) structure as catalyst support for oxidation of CO at low temperatures

Ziyi Zhong*, Xijiang Yin, Lifang Lew, Sooyee Tan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, TiO2 was successfully coated on Stober silica beads followed by depositing Au nanoparticles on this core-shell structure. The size of the Au nanoparticles was well controlled in the range of 2 - 7 nm. This composite exhibited high thermal stability. When used as a model catalyst for oxidation of CO at low temperatures, the Au/TiO2/SiO2 showed a much higher catalytic activity than the Au/SiO2 and Au/TiO2(P25) catalysts.

Original languageEnglish
Pages (from-to)1025-1028
Number of pages4
JournalKey Engineering Materials
Volume334-335 II
StatePublished - 2007
Externally publishedYes

Keywords

  • CO oxidation
  • Nano-sized Au particles
  • SiO(core)-TiO(shell) structure

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