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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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Enhancement of electrochemical stability and catalytic activity of Pt nanoparticles via strong metal-support interaction with sulfur-containing ordered mesoporous carbon

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Title
Enhancement of electrochemical stability and catalytic activity of Pt nanoparticles via strong metal-support interaction with sulfur-containing ordered mesoporous carbon
Author
Kwon, KyungjungJin, Seon-ahPak, ChanhoChang, HyukJoo, Sang HoonLee, Hyung IkKim, Jin HoeKim, Ji Man
Keywords
Carbon support; Catalytic activity; Charged state; Electrochemical stabilities; Heterogeneous atoms; Ordered mesoporous carbon; Oxygen reduction; Oxygen reduction reaction kinetics; Pt nanoparticle; Pt nanoparticles; Strong metal-support interaction; Sulfur atoms; XPS analysis
Issue Date
201104
Publisher
ELSEVIER SCIENCE BV
Citation
CATALYSIS TODAY, v.164, no.1, pp.186 - 189
Abstract
Pt nanoparticles on sulfur-containing ordered mesoporous carbon (Pt/S-OMC) are obtained with 3 nm in size and 60 wt.% loading. XPS analysis shows that there is a strong metal-support interaction between Pt nanoparticles and S atoms embedded on the OMC support. This strong metal-support interaction fastens Pt nanoparticles upon the support and alters the electronic state of Pt from Pt(0) of bulk Pt to a slightly charged state of Pt(delta+). These features result in an improvement both in electrochemical stability and oxygen reduction reaction kinetics compared to Pt/OMC where the OMC does not have sulfur atoms. The approach of tuning the electronic state and the interaction of Pt on carbon supports by embedding heterogeneous atoms into the OMC can effectively improve the stability and catalytic activity of Pt nanoparticles.
URI
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DOI
http://dx.doi.org/10.1016/j.cattod.2010.10.030
ISSN
0920-5861
Appears in Collections:
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