Sonochemical deposition of silver nanoparticles on silica spheres

被引：413
|
作者：
Pol, VG
Srivastava, DN
Palchik, O
Palchik, V
Slifkin, MA
Weiss, AM
Gedanken, A [1 ]
机构：
[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel
[2] Jerusalem Coll Technol, Dept Elect, IL-91160 Jerusalem, Israel
来源：
LANGMUIR | 2002年 / 18卷 / 08期
关键词：
D O I：
10.1021/la0155552
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Silver nanoparticles with an average size of similar to5 nm were deposited on the surface of preformed silica submicrospheres with the aid of power ultrasound. Ultrasound irradiation of a slurry of silica submicrospheres, silver nitrate, and ammonia in an aqueous medium for 90 min under an atmosphere of argon to hydrogen (95:5) yielded a silver-silica nanocomposite. By controlling the atmospheric and reaction conditions, we could achieve the deposition of metallic silver on the surface of the silica spheres. The resulting silver-deposited silica submicrosphere samples were characterized with X-ray diffraction, transmission electron microscopy, differential scanning calorimetry, energy-dispersive X-ray analysis, high-resolution transmission electron microscopy, high-resolution scanning electron microscopy, photoacoustic spectroscopy, and Fourier transform infrared, UV-visible, and X-ray photoelectron spectroscopy.
引用
收藏
页码：3352 / 3357
页数：6
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