Synthesis and Characterization of Ag@TiO2 Core-shell Nanoparticles and TiO2 Nanobubbles
- First Online:
- 791 Downloads
Ag@TiO2 core-shell structured particles of nano-size dimensions have been successfully prepared via a one-step way, which has proved quite effective in procuring stable colloids. Transmission electron microscopy (TEM) was employed to characterize the core size and the shell thickness, which typically were 20~40 nm and ~2 nm, respectively. X-ray diffraction (XRD) indicated the existence of silver. Optical absorption dependence on core size and synthetic temperature has been explored by UV–Vis absorption spectroscopy. Finally, the interesting titanium dioxide nanobubbles with silver core leached out by a unique means, were studied, which consequently proved the core-shell structure of the prepared nanoparticles, confirming the TEM observation.
Keywordscore-shell structure surface plasmon UV–Vis spectroscopy nanobubble titaninum dioxide silver
Unable to display preview. Download preview PDF.
- C.F. Bohen and D.R. Huffman, Absorption and Scattering of Light by Small Particles. New York: Wiley (1983).Google Scholar
- R.T. Tom, A. Nair, N. Singh, M. Aslam, C.L. Nagendra, R. Philip, K. Vijayamohanan and T. Pradeep, Freely dispersible Au@TiO2, Au@Zro2, Ag@TiO2, and Ag@ZrO2 core-shell nanoparticles: One-step synthesis, characterization, spectroscopy, and optical limiting properties. Langmuir 19 (2003) 3439-3445CrossRefGoogle Scholar
- Zhang L.M., D.X. Xia & Q. Shen, Mater. Lett. 2004, in review.Google Scholar