Deposition of Metal Nanoparticles on Carbon Nanotubes via Hexane Modified Water-in-CO2 Microemulsion at Room Temperature
| Autor: | Chien M. Wai, Horng-Bin Pan, Joanna Shaofen Wang |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Metal ions in aqueous solution Inorganic chemistry Biomedical Engineering chemistry.chemical_element Nanoparticle Bioengineering General Chemistry Carbon nanotube Condensed Matter Physics Catalysis law.invention Hexane chemistry.chemical_compound chemistry law General Materials Science Microemulsion Carbon Bimetallic strip |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 6:2025-2030 |
| ISSN: | 1533-4880 |
| Popis: | Carbon nanotube-supported metallic nanoparticles (Pd, Rh, and bimetallic Pd-Rh) with diameters in the range 2-10 nm can be synthesized by hydrogen reduction of metal ions dissolved in the water core of a CO 2 microemulsion in liquid CO 2 at room temperature. The microemulsion is stabilized by sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and dissolved in liquid CO 2 with the aid of hexane as a modifier. The metal nanoparticles synthesized in the microemulsion can be deposited on surfaces of multi-walled carbon nanotubes (MWCNTs) by stirring in the liquid CO 2 phase. This simple method produces uniformly distributed metal nanoparticles on surfaces of the MWCNTs with high yields. The carbon nanotube-supported Pd/Rh bimetallic nanoparticles exhibit high catalytic activities for hydrogenation of aromatic compounds and can be reused without losing catalytic activity. |
| Databáze: | OpenAIRE |
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