Fabrication of Nanoparticles Supported on Metal Oxides by PS-PVP Block Copolymer Encapsulation Method
| Autor: | Gil-Pyo Kim, Youngsoo Jung, Alan Kleiman-Schwarsctein, Sung Hyeon Baeck, Jae Hoon Ahn, Eric W. Mc Farland, Seung Bum Yoon |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Alloy technology industry and agriculture Oxide Nanoparticle engineering.material Condensed Matter Physics Atomic and Molecular Physics and Optics law.invention Catalysis Metal chemistry.chemical_compound Chemical engineering chemistry X-ray photoelectron spectroscopy law visual_art visual_art.visual_art_medium engineering Copolymer Organic chemistry General Materials Science Calcination |
| Zdroj: | Solid State Phenomena. 119:17-20 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.119.17 |
| Popis: | Nanoparticles (Au, Pt, Ru) supported on metal oxides (TiO2, Heteropoly Acid) were prepared by PS-PVP block copolymer encapsulation method. It was confirmed by XPS analysis that the oxidation state of metal is 0 after calcination, which indicates the complete removal of polymer. Synthesized catalysts were characterized by TEM, SEM-EDS, and UV-VIS spectroscopy and it was observed that synthesis and calcination conditions, and the interaction between nanoparticle and metal oxide affected significantly the particle size of metal on the surface of metal oxide. When two different metal precursors were diffused into the core of inversed micelles, nano alloy could be synthesized and the composition of nano alloy was controlled by varying the ratio between the two metal precursors. |
| Databáze: | OpenAIRE |
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