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New Findings from KIST in the Area of Nanoparticles Reported (Support effect on the catalytic activity of two-dimensional Pt nanoparticle arrays on...

August 8, 2014



New Findings from KIST in the Area of Nanoparticles Reported (Support effect on the catalytic activity of two-dimensional Pt nanoparticle arrays on oxide substrates)

By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Nanoparticles. According to news originating from Seoul, South Korea, by NewsRx correspondents, research stated, "Strong metal-support interactions are an important issue in determining the catalytic activity of heterogeneous catalysis. Here, we investigated the effect of the support in two-dimensional Pt nanocatalysts on reducible metal oxide supports under CO oxidation."

Our news journalists obtained a quote from the research from KIST, "Several reducible metal oxide supports, including CeO2, Nb2O5, and TiO2 thin films, were prepared via the sol-gel technique. The Langmuir-Blodgett technique and arc plasma deposition (APD) process were employed to obtain Pt nanoparticle arrays with and without capping layers, respectively, on an oxide support. We found that reducible metal oxide supports have a uniform thickness and crystalline structure after annealing, and exhibit a bandgap of 3.4-4.2 eV. We tested the catalytic performance of CO oxidation over Pt nanoparticles supported on metal-oxide thin films under 40 torr CO and 100 torr O-2. The catalytic activity of the Pt nanoparticles on oxide supports showed the general trend of CeO2 > Nb2O5 > TiO2 > SiO2 for both the colloidal and APD Pt nanoparticles."

According to the news editors, the research concluded: "These results reveal a strong support effect on the catalytic activity of the two-dimensional Pt nanocatalysts on oxide substrates under CO oxidation, with possible applications of tuning catalytic activity by engineering metal-oxide interfaces."

For more information on this research see: Support effect on the catalytic activity of two-dimensional Pt nanoparticle arrays on oxide substrates. Applied Catalysis A-General, 2014;480():25-33. Applied Catalysis A-General can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Nanoparticles).

The news correspondents report that additional information may be obtained from D. Park, KIST, Center Mat Architecturing, Seoul 136791, South Korea. Additional authors for this research include S.M. Kim, S.H. Kim, J.Y. Yun and J.Y. Park.

Keywords for this news article include: Asia, Seoul, South Korea, Nanotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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