화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.89, No.11, 3573-3576, 2006
Synthesis and characterization of Eu3+-doped sol-gel silica containing vanadium oxide nanotubes
Vanadium oxide nanotubes (VOx-NTs), were successfully incorporated into transparent sol-gel-derived silica monoliths that were also doped with Eu3+. Scanning electron microscopy and energy-dispersive X-ray measurements of the doped silica specimens confirmed the existence of nanotubes in the glass matrix. The influence of VOx-NTs on the transmission of the sol-gel monoliths as well as the absorption and luminescence spectra of the Eu3+ was investigated. The results imply that the inclusion of the VOx-NTs increases the turbidity of the monoliths through both scattering as well as absorption. Further, although less well defined in such a complex system, there also appear to be modifications to the local field around the Eu3+ ions that affect the photoluminescence spectra. Although work remains on the effects of nanotubes on lanthanide dopants, this work provides a framework for preparing transparent nanocomposite glasses that are robust hosts to study the fundamental interactions between nanomaterials and light.