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| 題 名 | Synthesizing Nanoparticles in Supercritical Carbon Dioxide |
|---|---|
| 作 者 | Wai,Chien M.; Ohde,Hiroyuki; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
| 卷 期 | 32:3 2001.05[民90.05] |
| 頁 次 | 頁253-261 |
| 分類號 | 343.8 |
| 關鍵詞 | Supercritical fluid; Nanoparticle; Microemulsion; |
| 語 文 | 英文(English) |
| 英文摘要 | Nanometer-sized silver, copper, and palladium metal particles were synthesized by chemical reduction of Ag ��,Cu ��, and Pd �� ions dissolved in the water core of a water-in-supercritical CO �� microemulsion. By mixing two microemulsions containing Ag �� and X �� ions separately, silver halide (AgX) nanoparticles were also synthesized in supercritical CO ��. Formation of these nanoparticles was monitored spectroscopically using a high-pressure fiber-optic reactor equipped with a CCD array UV-Vis spectrometer. The water-in-CO �� microemulsion may provide a reaction system for a wide range of nanomaterials syntheses involving ionic species that are normally insoluble in supercritical CO ��. This system may have profound implications for nanoparticle synthesis and catalysis in supercritical CO �� with virtually no detrimental environmental effects. |
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