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Hydrophobic silica aerogel derived from wheat husk ash by ambient pressure drying
Journal of Sol-Gel Science and Technology, 2015Silica aerogels from wheat husk ash (WHA) were prepared via a sol–gel process by ambient pressure drying. Silica was extracted from WHA by NaOH solution to form sodium silicate, which was used as precursor for aerogels. Silica wet gels were synthesized by resin-exchange-alkali-catalysis of the sodium silicate solution, followed by solvent exchange with
Shi-Wei Liu +5 more
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Synthesis of MWCNTs doped sodium silicate based aerogels by ambient pressure drying
Journal of Sol-Gel Science and Technology, 2012The successful incorporation of multiwalled carbon nanotubes (MWCNTs) into silica aerogels prepared by sol–gel method is reported herein. Pure silica aerogels prepared using sodium silicate precursor by ambient pressure drying are so fragile that they cannot be used easily.
Uzma K. H. Bangi +3 more
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Preparation and Properties of Hydrophobic Silica Aerogels by Ambient Pressure Drying Method
Applied Mechanics and Materials, 2011Silica alcogels were prepared by hydrolysis with hydrochloric acid and condensation with NH4OH of ethanol diluted tetraethylorthosilicate (TEOS) precursor and trimethylchlorosilane and hexane as surface modifying agent. The physical properties such as density, appearance, hydrophobicity, surface area, pore size distribution and thermal stability were ...
Hui Wang, Shi Ming Liu, Ling Ke Zeng
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Preparation and surface modification mechanism of silica aerogels via ambient pressure drying
Materials Chemistry and Physics, 2011Fujian Key Laboratory of Advanced Materials, China [2006L2003]; Natural Science Foundation of Fujian Province, China [2009J05133]
Wu, Guoyou +3 more
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SiO2/TiO2 composite aerogels: Preparation via ambient pressure drying and photocatalytic performance
Ceramics International, 2014Silica/titania (SiO2/TiO2) (Si/Ti= 1:1) composite aerogels have been manufactured via ambient pressure drying using tetraethoxysilane (TEOS) and tetrabutyl titanate (TBT) as precursors. Changes in the structure and the surface properties of the aerogels during the heat treatment were investigated in detail by N-2 adsorption-desorption techniques, SEM ...
Shengjun Cheng +4 more
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Preparation of cresol–formaldehyde carbon aerogels via drying aquagel at ambient pressure
Journal of Non-Crystalline Solids, 2006Abstract Carbon aerogels were prepared from mixed cresol (Cm) and formaldehyde (F) via the sol–gel process followed by drying at ambient pressure and carbonization. The inexpensive feedstock of mixed cresol and the simple drying process could be as an alternative economical route to the classical resorcinol–formaldehyde synthesis process.
Yudong Zhu +3 more
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Preparation and characterization of silica aerogels from diatomite via ambient pressure drying
Russian Journal of Physical Chemistry A, 2014The silica aerogels were successfully fabricated under ambient pressure from diatomite. The influence of different dilution ratios of diatomite filtrate on physical properties of aerogels were studied. The microstructure, surface functional groups, thermal stability, morphology and mechanical properties of silica aerogels based on diatomite were ...
Baomin Wang, Hainan Ma, Kai Song
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Silica aerogel films via ambient pressure drying for broadband reflectors
New Journal of Chemistry, 2018This manuscript demonstrates the advantages of silica aerogel films over nanoparticles in broadening the reflection bandwidth of cholesteric liquid crystals.
Xiaobo Wang +9 more
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Preparation and Characterization of Hydrophobic Silica Aerogel by Ambient Pressure Drying Method
Key Engineering Materials, 2013Silica aerogel has been prepared by ambient pressure drying technique using water glass as starting materials. Solvent exchange and surface modification were simultaneously conducted by immersing the wet hydrogel in EtOH/TMCS(Tri Methyl Chloro Silane)/hexane solution.
Hui Xu +4 more
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Synthesis of platinum nanoparticles on carbon aerogel by ambient pressure drying method
Materials Letters, 2010Abstract Platinum nanoparticles were successfully synthesized on porous carbon aerogel with narrow pore size distribution by ambient pressure drying method. Platinum doped carbon aerogels were synthesized by sol–gel polymerization of resorcinol with furfural in non aqueous medium followed by ambient pressure drying and pyrolysis of organic gel. These
Rashmi Singh +5 more
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