Synthesis of Au Nanorods by Using Gamma-ray Irradiation

被引：4
|
作者：
Okamoto, Akihiko [1 ]
Nagata, Koichiro [1 ]
Taguchi, Noboru [1 ]
Iwase, Akihiro [1 ]
Hori, Fuminobu [1 ]
机构：
[1] Osaka Prefecture Univ, Dept Mat Sci, Sakai, Osaka 5998531, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2012年 / 51卷 / 11期
关键词：
SURFACE-PLASMON RESONANCE; GOLD NANORODS; ASPECT-RATIO; CLUSTERS; NANOPARTICLES; ELECTRON; GROWTH; BEAM; SIZE;
D O I：
10.1143/JJAP.51.11PH01
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To synthesize Au nanorods without the use of seed crystals, we applied gamma-ray irradiation from Co-60 radioactive source to reduce aqueous solution containing Au ions. The total dose was fixed to 6.0 kGy with various dose rates from 0.4 to 13.6 kGy/h. After the irradiation, two surface plasmon bands in the range around 530nm and above 700nm were observed in UV/vis spectra. We observed by a transmission electron microscopy (TEM) that rod-shaped Au nanoparticles with the length of 20-25 nm, and the width of about 7-15nm were produced as well as a small amount of spherical particles. The size and the aspect ratio of the Au nanorods are well correlated with gamma-ray irradiation dose rate; with increasing the dose rate, their size decreases and the aspect ratio increases. (C) 2012 The Japan Society of Applied Physics
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页数：3
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