嵌有纳米碳颗粒凝胶玻璃的制备及其发光特性

Photoluminescence Properties and Preparation of Nanosized Carbon Particles Embedded Gel-Glass

以磷酸三乙酯、硝酸铝和正硅酸乙酯为原料，通过它们的水解制备了ｘＡｌ２Ｏ３·ｘＰ２Ｏ５·１００ＳｉＯ２（ｘ＝０．２５～３）凝胶．在６００℃对凝胶进行热处理，使其中的有机基团炭化，从而制备出了镶嵌有碳纳米颗粒的ｘＡｌ２Ｏ３·ｘＰ２Ｏ５·１００ＳｉＯ２（ｘ＝０．２５，０．５）凝胶玻璃．在室温下以５３２ｎｍ激光（Ｎｄ：ＹＡＧ）激发，在 ６３０ｎｍ处有一强的发光峰，该发光现象是由镶嵌在凝胶玻璃中的纳米碳颗粒产生的．

C-nanoparticles embedded xAl2O3· xP2O5.100SiO2 (x=0.25 or 0.5) gel-glasses were prepared by a sol-gel process. The gels synthesized through hydrolysis of PO(OC2H5)3, Al(NO3)3· 9H2O and Si(OC2H5)4, were heated at 600℃ for 10h, in which -- OC2H5 were carbonized to precipitate nanosized C particles. Glasses doped with C nanoparticles showed a strong roomtemperature photoluminescence with a peak at 630um under 532um Nd:YAG laser excitation. The photoluminescence spectra were caused by C nanoparticles embedded gel-glasses.