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

doi:10.1021/nl4029973

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 journal › Article › peer-review

98 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 language	English (US)
Pages (from-to)	4957-4962
Number of pages	6
Journal	Nano Letters
Volume	13
Issue number	10
DOIs	https://doi.org/10.1021/nl4029973
State	Published - Oct 9 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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10.1021/nl4029973

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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.",

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AB - 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.

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

Abstract

All Science Journal Classification (ASJC) codes

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