A sinter-resistant catalytic system fabricated by maneuvering the selectivity of SiO2 Deposition onto the TiO2 surface versus the pt nanoparticle surface

Ping Lu, Charles T. Campbell, Younan Xia

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

A triphasic catalytic system (Pt/TiO2-SiO2) with an "islands in the sea" configuration was fabricated by controlling the selectivity of SiO2 deposition onto the surface of TiO2 versus the surface of Pt nanoparticles. The Pt surface was exposed, while the nanoparticles were supported on TiO2 and isolated from each other by SiO2 to achieve both significantly improved sinter resistance up to 700 C and outstanding activity after high-temperature calcination. This work not only demonstrates the feasibility of using a new triphasic system with uncovered catalyst to maximize the thermal stability and catalytic activity but also offers a general approach to the synthesis of high-performance catalytic systems with tunable compositions.

Original languageEnglish (US)
Pages (from-to)4957-4962
Number of pages6
JournalNano Letters
Volume13
Issue number10
DOIs
StatePublished - Oct 9 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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