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Issue 33, 2009
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Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbonvia strong metal-support interaction

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Abstract

Sulfur-containing ordered mesoporous carbon (S-OMC) material was successfully obtained from a mesoporous silica template through a nano-replication method using p-toluenesulfonic acid as the framework source. The S-OMC material thus obtained could be utilized as an excellent support for Pt nanoparticles of size 3.14 nm, even though the Pt loading was 60 wt%. The Pt nanoparticles supported on the S-OMC material (Pt/S-OMC) exhibited excellent thermal stability compared with those supported on sulfur-free ordered mesoporous carbon and Vulcan carbon. XPS analysis indicated that the strong metal-support interaction between the sulfur atoms in the S-OMC support and the surface atoms of the loaded Pt nanoparticles played an important role in stabilization of the Pt nanoparticles against the Ostwald ripening process during the thermal treatments. Cyclic voltammogram results revealed that the Pt/S-OMC material exhibited reasonably high electrochemically active Pt surface areas before and after thermal treatments at 600 °C, indicating that the surface of Pt nanoparticles was not poisoned by the sulfur atoms of the S-OMC support.

Graphical abstract: Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbonvia strong metal-support interaction

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Publication details

The article was received on 15 Apr 2009, accepted on 18 Jun 2009 and first published on 23 Jul 2009


Article type: Paper
DOI: 10.1039/B907514C
Citation: J. Mater. Chem., 2009,19, 5934-5939
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    Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbonvia strong metal-support interaction

    H. I. Lee, S. H. Joo, J. H. Kim, D. J. You, J. M. Kim, J. Park, H. Chang and C. Pak, J. Mater. Chem., 2009, 19, 5934
    DOI: 10.1039/B907514C

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