Laser-assisted synthesis of Au-Ag alloy nanoparticles in solution |
| |
Authors: | Peng Zhangquan Spliethoff Bernd Tesche Bernd Walther Thomas Kleinermanns Karl |
| |
Institution: | Institut für Physikalische Chemie, Heinrich-Heine-Universit?t Düsseldorf, 40225 Düsseldorf, Germany. |
| |
Abstract: | By using laser-induced heating, we prepared Au-Ag nanoalloys via three different procedures: (i) mixture of Au nanoparticles and Ag(+) ions irradiated by a 532 nm laser, (ii) mixture of Au and Ag nanoparticles irradiated by a 532 nm laser, and (iii) mixture of Au and Ag nanoparticles irradiated by a 355 nm laser. Procedure i is advantageous for the production of spherical alloy nanoparticles; in procedures ii and iii, nanoalloys with a sintered structure have been obtained. The morphology of the obtained nanoalloys depends not only on the laser wavelength but also on the concentration of nanoparticles in the initial mixture. When the total concentration of Ag and Au nanoparticles in the mixture is increased, large-scale interlinked networks have been observed upon laser irradiation. It is expected that this selective heating strategy can be extended to prepare other bi- or multi-metallic nanoalloys. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|