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Joo, Sang Hoon
Nanomaterials & Catalysis Lab
Research Interests
  • Catalyst, energy conversion, fuel cells, electrolyzer, ORR, HER, OER

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Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbon via strong metal-support interaction

Cited 27 times inthomson ciCited 24 times inthomson ci
Title
Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbon via strong metal-support interaction
Author
Lee, Hyung IkJoo, Sang HoonKim, Jin HoeYou, Dae JongKim, Ji ManPark, Jung-NamChang, HyukPak, Chanho
Keywords
Before and after; Cyclic voltammograms; Mesoporous Silica; Nanoreplication; Ordered mesoporous carbon; Ostwald ripening process; Pt loading; Pt nanoparticles; Ptoluenesulfonic acid; Strong metal-support interaction; Sulfur atoms; Surface area; Surface atoms; Thermal stability; Thermal treatment; XPS analysis
Issue Date
2009
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.19, no.33, pp.5934 - 5939
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 degrees C, indicating that the surface of Pt nanoparticles was not poisoned by the sulfur atoms of the S-OMC support.
URI
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DOI
10.1039/b907514c
ISSN
0959-9428
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ECHE_Journal Papers
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