Direct preparation of silver nanoparticles and thin films in CO2-expanded hexane
| Autor: | Hsin-Wei Lin, Clive H. Yen, Chung-Sung Tan, Yi-Chen Huang |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Fabrication
Materials science Annealing (metallurgy) General Chemical Engineering Supercritical drying Nanotechnology Condensed Matter Physics Silver nanoparticle Hexane Metal chemistry.chemical_compound Chemical engineering chemistry Electrical resistivity and conductivity visual_art visual_art.visual_art_medium Physical and Theoretical Chemistry Thin film |
| Zdroj: | The Journal of Supercritical Fluids. 89:137-142 |
| ISSN: | 0896-8446 |
| DOI: | 10.1016/j.supflu.2014.03.003 |
| Popis: | Small, uniform and suspended silver nanoparticles were directly prepared in CO 2 -expanded hexane by reducing a synthesized metal precursor, silver isostearate, with hydrogen but without introducing additional capping agents. By increasing CO 2 pressure, the suspended silver nanoparticles could be further deposited on a solid substrate to form silver thin film via gas antisolvent and the subsequent supercritical drying processes. The silver thin films prepared by the aforementioned method possessed a uniform thickness of about 150 nm without surface cracking and low electrical resistivity (5.64 × 10 −6 Ω cm) after applying an annealing process. Due to the deposition of nano-sized silver particles, the annealing temperature could be as low as 175 °C that is lower than the softening points of many transparent polymeric substrates used for fabrication of flexible conductive films. |
| Databáze: | OpenAIRE |
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