Aerogels containing strongly photoluminescing zinc oxide nanocrystals
作者： C. Lorenz , A. Emmerling , J. Fricke , T. Schmidt , M. Hilgendorff
DOI: 10.1016/S0022-3093(98)00679-6
关键词:
摘要: Abstract Sol–gel processing was used to prepare ZnO-doped silica-aerogels by hydrolysis and condensation of tetramethoxysilane (TMOS) in the presence 6 nm sized nanocrystalline ZnO particles. Supercritical drying yielded strongly green–yellow fluorescing aerogels. Fluorescence excitation emission spectra resulting particles a silica matrix were preserved after supercritical drying, contrast air sintering conditions under which visible fluorescence is completely suppressed. Anomalous small angle X-ray scattering (ASAXS) employed evaluate internal structure these precursors as well nearly transparent aerogel samples.
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