Journal
APPLIED SURFACE SCIENCE
Volume 348, Issue -, Pages 10-15Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.02.057
Keywords
Laser; Ablation; Colloids; Nanoparticles; Submicron particles; Ligands
Categories
Funding
- Management Expenses Grants for National University Corporations from the Ministry of Education, Culture, Sports, Science and Technology of Japan
- [50284568]
- Grants-in-Aid for Scientific Research [26289266, 25286003] Funding Source: KAKEN
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Laser-induced melting in liquids (LIML) was applied to prepare spherical submicron-sized particles of gold (AuSMPs) from gold nanoparticles (AuNPs) stabilized using NaCl. Because undesirable byproducts, which might be generated when organic reagents such as citrate are used as the stabilizing reagent, are not generated from NaCl by laser irradiation, AuSMPs fabricated from AuNPs stabilized by NaCl will be low toxic. The AuSMPs were obtained by laser irradiation of the source AuNPs in NaCl solutions stabilized by NaCl at the proper concentration. Similar to the preparation of AuSMPs from AuNPs stabilized by citrate, the agglomeration of the source AuNPs, which is necessary to obtain AuSMPs, was controlled both by the NaCl concentration and by laser irradiation. However, the formation process and the laser-fluence dependence of the particle size of AuSMPs differed for various NaCl solutions and citrate solutions. (C) 2015 Elsevier B.V. All rights reserved.
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