Optimization of silver nanoparticles production by laser ablation in water using a 150-ps laser

被引：8
|
作者：
Stasic, J. [1 ]
Zivkovic, Lj. [1 ]
Trtica, M. [1 ]
机构：
[1] Univ Belgrade, Inst Nucl Sci Vinca, Mike Petrov Alasa 12-14,POB 522, Belgrade 11001, Serbia
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2016年 / 18卷 / 12期
关键词：
Silver nanoparticles; Laser ablation in liquid; Picosecond laser; Yield optimization; LIQUID; YIELD;
D O I：
10.1007/s11051-016-3672-y
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Silver nanoparticles were synthesized by laser ablation in liquid (water) using a 150-ps Nd:YAG laser. Due to their extraordinary characteristics, especially when obtained by this method providing high purity and high stability of colloids, silver NPs are nowadays highly important in various applications. The objective of this study was to optimize the process parameters in order to achieve the highest possible yield while retaining small particle size. Yield/mass concentration of the obtained particles was measured depending on different parameters: time of irradiation, pulse energy, position regarding the focus, and number of irradiation locations. The conditions providing relatively high yield, small particle size, highest production rate, and highest efficiency are 7 mJ, 15-min irradiation time (9000 pulses), and target position similar to 4 mm in front of the lens focus. The results are compared with the results obtained by the longer nanosecond as well as the ultrashort pulsed lasers. A possible physical explanation is given.
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页数：10
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