Solgel synthesis and structural characterization of silver-silica nanocomposites |
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| Authors: | Sunita Devi and M. Srivastva |
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| Affiliation: | (1) Research Institute of Physicochemical Problems of Belarusian State University, 14 Leningradskaya St., Minsk , 220080, Belarus;(2) Institute of Molecular and Atomic Physics of NAS of Belarus, 70 Nezalezhnasti Ave., Minsk , 220072, Belarus;(3) Belarusian State University, 4 Nezalezhnasti Ave., Minsk , 220050, Belarus |
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| Abstract: | The solgel process has been successfully used to prepare silver/silica nanocomposites. After drying in air at 50°C for 30 min, samples were heat treated in air, at 100, 200, 400 and 500°C for the formation of silver nanoparticles. Evolution of silver nano-particles in the amorphous SiO2 matrix as a function of annealing temperature has been studied. Characterizations were made by X-ray diffraction, ultraviolet-visible, and infrared spectroscopy. Mechanisms of silver clusters formation in the densified silica matrix with respect to thermal treatment are discussed. |
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