Sonochemical deposition of silver nanoparticles on silica spheres

被引：415

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

页码：3352 / 3357

页数：6

共 38 条

[1] SONOLYSIS OF AQUEOUS SURFACTANT SOLUTIONS - PROBING THE INTERFACIAL REGION OF CAVITATION BUBBLES BY SPIN TRAPPING [J].