Abstract
Multi-walled carbon nanotube doped silica aerogels(MWCNT-SAs) were synthesized from a wet gel of well-dispersed MWCNT by one-step solvent exchange/surface modification and ambient pressure drying(APD). Waterglass was employed as a precursor to prepare wet gel. The content of MWCNT varied from 0 to 15% volume by wet gel. The surface group, thermal stability and microstructure of pure silica aerogel and MWCNT-SAs were investigated by FTIR, DTA, and TEM. Experimental results show that MWCNT-SAs are hydrophobic when the temperature is below 400 °C, MWCNT-SAs exhibit a mesoporous network structure, and they achieve the largest scale with least shrinkage and lowest density when doped with 5 vol% MWCNT.
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Funded by the Fundamental Research Funds for the Central Universities (No.DUT11NY11) and the State Key Laboratory of Coastal and Offshore Engineering (No.LP1109)
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Wang, B., Song, K., Han, Y. et al. Synthesis and characterization of multi-walled carbon nanotube doped silica aerogels. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 27, 512–515 (2012). https://doi.org/10.1007/s11595-012-0494-3
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DOI: https://doi.org/10.1007/s11595-012-0494-3