A novel preparation of superhydrophobic silica aerogels via the combustion drying method

2021 ◽  
Author(s):  
Zhonghao Li ◽  
Runxun Liao ◽  
Runping Jia ◽  
Yufeng Liu ◽  
Xiaowei Xu ◽  
...  
Keyword(s):  
Silica Aerogels ◽  
Drying Method ◽  
Superhydrophobic Silica

scholarly journals Eco-friendly approach for preparation of water-based superhydrophobic silica aerogels via ambient pressure drying

2021 ◽  
Vol 8 (1) ◽  
pp. 015021
Author(s):  
Xiaoling Yuan ◽  
Lihui Xu ◽  
Hong Pan ◽  
Yong Shen ◽  
Liming Wang ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Water Based ◽  
Superhydrophobic Silica

Superhydrophobic silica aerogels by fluorination at the gel stage

2004 ◽  
pp. 2316-2317 ◽  
Author(s):  
Anna Roig ◽  
Elies Molins ◽  
Elisenda Rodríguez ◽  
Sandra Martínez ◽  
Marcial Moreno-Mañas ◽  
...  
Keyword(s):  
Silica Aerogels ◽  
Superhydrophobic Silica

scholarly journals Superhydrophobic silica aerogels reinforced with polyacrylonitrile fibers for adsorbing oil from water and oil mixtures

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 4039-4045 ◽  
Author(s):  
Mingjia Shi ◽  
Cunguo Tang ◽  
Xudong Yang ◽  
Junling Zhou ◽  
Fei Jia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silica Aerogels ◽  
Simple Method ◽  
Oil Mixtures ◽  
Superhydrophobic Silica

Aerogels are modified by a simple method of hydrophobicity and mechanical properties simultaneously.

Cellulose nanofibril reinforced silica aerogels: optimization of the preparation process evaluated by a response surface methodology

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 100326-100333 ◽  
Author(s):  
Jingjing Fu ◽  
Chunxia He ◽  
Jingda Huang ◽  
Zhilin Chen ◽  
Siqun Wang
Keyword(s):  
Mechanical Properties ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Ambient Pressure ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Preparation Process ◽  
Cellulose Nanofibril ◽  
Drying Method ◽  
Composite Aerogels

CNF–silica composite aerogels with reinforced mechanical properties were prepared under an ambient pressure drying method and optimized by a response surface methodology.

The effect of pH on the physicochemical properties of silica aerogels prepared by an ambient pressure drying method

2007 ◽  
Vol 61 (14-15) ◽  
pp. 3130-3133 ◽  
Author(s):  
Seunghun Lee ◽  
Young Chul Cha ◽  
Hae Jin Hwang ◽  
Ji-Woong Moon ◽  
In Sub Han
Keyword(s):  
Physicochemical Properties ◽  
Ambient Pressure ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Drying Method ◽  
Effect Of Ph

Solvents Effects on Physicochemical Properties of Nano-Porous Silica Aerogels Prepared by Ambient Pressure Drying Method

2006 ◽  
Vol 510-511 ◽  
pp. 910-913 ◽  
Author(s):  
Seung Hun Lee ◽  
Eun A Lee ◽  
Hae Jin Hwang ◽  
Ji Woong Moon ◽  
In Sub Han ◽  
...  
Keyword(s):  
Ph Value ◽  
Ambient Pressure ◽  
Average Pore Size ◽  
Porous Silica ◽  
Sodium Silicate Solution ◽  
Silicate Solution ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Drying Method ◽  
Average Pore

Hydrophobic silica aerogels were synthesized by an ambient pressure drying method from silicic acid with a different pH value, which was prepared from sodium silicate solution (water glass). In this study we chose various hydrocarbon class solvents such as pentane, hexane, heptane, and toluene, and performed surface modification in TMCS (trimethylchlorosilane)/solvent solutions in order to improve reproducibility in aerogel production. Densities of the aerogels were about 0.1 ~ 0.3 g/cm3 , and apparent porosities were 88 ~ 96 %, depending on the processing conditions. Specific surface area was approximately 730 ~ 950 m2/g, and average pore size around 10 nm.

A Novel Route for Preparation of Transparent and Superhydrophobic Silica Aerogels

2009 ◽  
Vol 1234 ◽  
Author(s):  
Guo-you Wu ◽  
Xuan Cheng ◽  
Yu-xi Yu ◽  
Ying Zhang
Keyword(s):  
Surface Modification ◽  
Ambient Pressure ◽  
Sol Gel ◽  
Three Dimensional ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Nanoporous Structure ◽  
Surface Areas ◽  
Superhydrophobic Silica ◽  
Dta Curve

AbstractSilica aerogels were synthesized via sol-gel processing followed by a two-step surface modification and ambient pressure drying, using methyltrimethoxysilane (MTMS) and trimethylchlorosilane (TMCS)/ethanol/n-hexane as surface modification agents. The transparent silica aerogels possessed the porosities, densities and specific surface areas in the range of 87.7–92.3%, 0.27–0.17 g·cm-3 and 852–1005 m2·g-1, respectively. The SEM and HRTEM analysis revealed the three-dimensional nanoporous structure of the silica aerogels. The presence of –CH3 functional groups on the surface of silica particles as indicated by the FTIR spectra was further confirmed by two visible exothermic peaks at 310 and 450–500 °C from the DTA curve. In addition, the silica aerogels were superhydrophobic with the contact angle as high as 160°.

Studies on rheological properties of methyltriethoxysilane (MTES) based flexible superhydrophobic silica aerogels

2009 ◽  
Vol 117 (3) ◽  
pp. 617-626 ◽  
Author(s):  
Digambar Y. Nadargi ◽  
Sanjay S. Latthe ◽  
Hiroshi Hirashima ◽  
A. Venkateswara Rao
Keyword(s):  
Rheological Properties ◽  
Silica Aerogels ◽  
Superhydrophobic Silica
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