Silver nanoparticles: synthesis and size control by electron irradiation

被引:185
作者
Bogle, K. A. [1 ]
Dhole, S. D. [1 ]
Bhoraskar, V. N. [1 ]
机构
[1] Univ Poona, Dept Phys, Microtron Accelerator Lab, Pune 411007, Maharashtra, India
关键词
D O I
10.1088/0957-4484/17/13/021
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Silver nanoparticleswere synthesized by irradiating solutions, prepared by mixing AgNO3 and poly-vinyl alcohol (PVA), with 6 MeV electrons. The electron-irradiated solutions and the thin coatings cast from them were characterized using the ultraviolet - visible (UV-vis), x-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques. During electron irradiation, the process of formation of the silver nanoparticles appeared to be initiated at an electron fluence of similar to 2 x 10(13) e cm(-2). This was evidenced from the solution, which turned yellow and exhibited the characteristic plasmon absorption peak around 455 nm. Silver nanoparticles of different sizes in the range 60 - 10 nm, with a narrow size distribution, could be synthesized by varying the electron fluence from 2 x 10(13) to 3 x 10(15) e cm(-2). Silver nanoparticles of sizes in the range 100 - 200 nm were also synthesized by irradiating an aqueous AgNO3 solution with 6 MeV electrons.
引用
收藏
页码:3204 / 3208
页数:5
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