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In situ synthesis and catalytic activity in CO oxidation of metal nanoparticles supported on porous nanocrystalline silicon
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Polisski, Sergej, Goller, Bernhard, Wilson, Karen, Kovalev, Dmitry, Zaikowskii, Vladimir and Lapkin, Alexei. (2010) In situ synthesis and catalytic activity in CO oxidation of metal nanoparticles supported on porous nanocrystalline silicon. Journal of Catalysis, Vol.271 (No.1). pp. 59-66. ISSN 0021-9517
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Official URL: http://dx.doi.org/10.1016/j.jcat.2010.02.002
Abstract
Reactive surface of mesoporous nanocrystalline silicon was used to synthesise noble metal nanoparticles via in situ reduction of the precursor salt solutions. The synthetic methodology for metal nanoparticle formation was systematically developed, and reaction conditions of metal salts reduction were optimised to prepare nanoparticles of controlled size distribution in the order 5-10 nm inside the mesoporous silicon template. CO oxidation was used as a test reaction for the synthesised Pt/porous silicon catalysts. Sharp reaction light-off was observed at about 120 degrees C on the optimised catalysts. The catalysts were shown to be stable in the extended steady-state runs and in the catalysts re-use experiments. Metal nanoparticles were shown to be stable to sintering at elevated temperatures up to 1000 degrees C. However, after thermal treatment on air, Pt nanoparticles were covered by a SiOx layer and were less active in CO oxidation. (C) 2010 Elsevier Inc. All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > Engineering |
| Journal or Publication Title: | Journal of Catalysis |
| Publisher: | Academic Press |
| ISSN: | 0021-9517 |
| Date: | 12 April 2010 |
| Volume: | Vol.271 |
| Number: | No.1 |
| Number of Pages: | 8 |
| Page Range: | pp. 59-66 |
| Identification Number: | 10.1016/j.jcat.2010.02.002 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
| Grant number: | EP/E012183/1 (EPSRC) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/6002 |
Data sourced from Thomson Reuters' Web of Knowledge
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