Synthesis of TiO2@Ag Nano-Composite Particles Using Pulsed Laser Gas Phase Evaporation-Liquid Collection

Sui Yuan Chen; Jin Huan Wang; Xian Zhou; Jing Liang; Chang Sheng Liu

doi:10.4028/www.scientific.net/AMM.670-671.22

Paper Titles

Preface and Conference Organization

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 670-671Synthesis of TiO2@Ag Nano-Composite Particles...

Synthesis of TiO₂@Ag Nano-Composite Particles Using Pulsed Laser Gas Phase Evaporation-Liquid Collection

Abstract:

The targets are micron-sized TiO₂powders and micron-sized Ag powders, TiO₂@Ag nanocomposite particles with core-shell structure were synthesized by pulsed laser gas phase evaporation-liquid phase collecting method. The morphology, structure and synthesis mechanism of the samples were studied by means of transmission electron microscopy (TEM), energy dispersive spectrometer (EDS), and X-ray diffraction technique (XRD). The results show that the pure TiO₂ nanoparticles sol was firstly prepared as liquid phase collecting system using gas phase evaporation-liquid phase collecting method; then, the target was changed using Ag, and TiO₂ @ Ag nanocomposite particles with core-shell structure, which are spherical or ellipsoidal, were successfully synthesized under certain conditions of laser synthesis parameters; the diameters of most TiO₂@Ag nanocomposite particles covering synthesized after 2h range from 15nm to 35nm, the diameters of most TiO₂ @Ag nanocomposite particles covering synthesized after 4h range from 25nm to 50nm, and the size of nanocomposite particles increases with the increase of covering synthesis time; TiO₂ nanoparticles synthesized previously in liquid phase function as crystallized cores, while Ag atoms and their clusters are adsorbed to TiO₂ surfaces and surround the surfaces to form TiO₂ @ Ag nanocomposite particles.