期刊
MATERIALS
卷 11, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/ma11060891
关键词
controlled synthesis; gas bubble formation; voltage waveform; silver nanoparticle; silver nanoplate
类别
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2017R1A4A1015565]
- Brain Korea 21 (BK21) plus project - Ministry of Education, Korea [21A20131600011]
- National Research Foundation of Korea [2017R1A4A1015565] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Most methods controlling size and shape of metal nanoparticles are chemical methods, and little work has been done using only plasma methods. Size- and shape-controlled synthesis of silver nanoparticles (Ag NPs) is proposed based on adjusting the gas bubble formation produced between two silver electrodes. The application of a voltage waveform with three different pulse widths during a plasma process in water can generate different gas bubble formations. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images of Ag NPs synthesized using three different bubble formations reveal that spherical Ag NPs are synthesized when very tiny bubbles are generated between two electrodes or when only the grounded electrode is enveloped with large gas bubbles, but Ag nanoplates are synthesized when both electrodes are completely enveloped with large gas bubbles.
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