Journal
APPLIED SURFACE SCIENCE
Volume 253, Issue 19, Pages 8045-8049Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2007.02.153
Keywords
liquid-phase synthesis; nanoparticle synthesis; metal microparticles; pulsed laser ablation
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Funding
- National Research Foundation of Korea [과C6A1807] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Recent studies demonstrated that the process to produce metal and oxide nanoparticles by laser ablation of consolidated microparticles is a convenient and energy-efficient way to prepare nanoparticles. In this work, the novel process is applied to nanoparticle synthesis in the liquid environment and the results are compared with those by the gas-phase process. Metal and oxide nanoparticles are synthesized by pulsed laser ablation of the compacted metal microparticles using a Q-switched Nd:YAG laser in water. It is shown that the process is effective for preparing nanoparticle suspensions having relatively uniform size distributions. While the laser fluence and the degree of compaction strongly influence the size of the produced nanoparticle in air, the sedimentation time is shown to be the most critical factor to determine the mean size of the suspended particles. (c) 2007 Elsevier B.V. All rights reserved.
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