期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 14, 期 12, 页码 8925-8929出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2014.10068
关键词
Nanostructured Material; Nanofabrication; Pt/Ag Bimetallic Nanoparticle; Successive Solution Plasma Process
类别
资金
- National Research Foundation of Korea (NRF) - Korean Government (MSIP) [2013M2A8A1042684]
- Korea Institute of Industrial Technology (KITECH)
A successive solution plasma process was developed for the synthesis of Pt/Ag bimetallic nanoparticles. Ag nanoparticles were made first by applying a high voltage of bipolar pulsed DC to anode and cathode electrodes composed of Ag rods. The solution containing Ag nanoparticles was discharged successively using Pt electrodes. The joule heating and electrolysis between electrodes generated vapors, and solution plasma was sustained due to progressive ionization and excitation in the vapor phase. The maximum current and voltage breakdown was observed at approximately 8.9 A and 900 V with an interval of 25 mu s, which indicated that an intense solution plasma was sustained continuously. The Pt-on-Ag heterogeneous nanostructures formed, and finally, the Ag nanoparticles were completely covered by Pt nanoparticles after a discharge duration of 1,200 s.
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