Microstructural Characterization and Properties of Silica Aerogels Doped with Nano-ITO Powder

Abstract:

Silica-based aerogels doped with nano-ITO powder were synthesized using sol–gel process followed by supercritical drying. The main factors were studied including dosage of compling agent KH570 and ITO. The result shows that thermal radiation conductivity is 0.02659 W/(m•K) with ITO of 44.44% after 10 g ITO powder is modified with 1 mL KH570. The microstructure and physical characteristic of the SiO₂–ITO aerogels were characterized by FTIR, SEM, TG-DSC and BET. Their specific surface was in the range of 513–775m²/g and their average pore size was mainly 20 nm. Nano-ITO powders are physically embedded by SiO₂ aerogels.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 662-666
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.662
• Online since: July 2011
• Authors: Ben Lan Lin, Sheng Cui, Xiao Dong Shen, Ying Li Leng, Xue Yong Liu, Yu Liu
• Keywords: ITO Powder, Scanning Electron Microscope (SEM), Silica-Based Aerogel, Sol-Gel Synthesis, Supercritical Drying Method

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