A Study on Nanoscale Infrared Absorbent Working in Waveband Range of 1300{400 cm ¡1

Nanoscale powder of SiO2/Al2O3/TiO2 composite was prepared by sol-gel method. Microstructure and morphology of the obtained samples were characterized by infrared (IR), X-ray difiraction (XRD) analysis and transmission electron microscopy (TEM). It is proved that infrared absorbing peaks of the samples are in waveband range of 1300{400 cm i1 , and the peak shape changes with their component. Mechanism of the infrared peak 0 s positions and shapes which changes with the size and morphology of the prepared nano-particles has been tentatively discussed.