Preparation of Nanoporous Silica Aerogel from Wheat Husk Ash by Ambient Pressure Drying Process for the Adsorptive Removal of Lead from Aqueous Solution

2018 ◽  
Vol 08 (01) ◽  
Author(s):  
Pınar Terzioglu ◽  
Tülay Merve Temel ◽  
Burcu Karakuzu İkizler ◽  
Sevil Yucel
Keyword(s):  
Aqueous Solution ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Nanoporous Silica ◽  
Drying Process ◽  
Adsorptive Removal ◽  
Wheat Husk

Hydrophobic silica aerogel derived from wheat husk ash by ambient pressure drying

2015 ◽  
Vol 78 (1) ◽  
pp. 60-67 ◽  
Author(s):  
Shi-Wei Liu ◽  
Qi Wei ◽  
Su-Ping Cui ◽  
Zuo-Ren Nie ◽  
Meng-Hao Du ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Hydrophobic Silica ◽  
Wheat Husk

A type of thiophene-bridged silica aerogel with a high adsorption capacity for organic solvents and oil pollutants

2018 ◽  
Vol 5 (8) ◽  
pp. 1894-1901 ◽  
Author(s):  
Yuetao Liu ◽  
Jiawen Sun ◽  
Junguo Yuan ◽  
Shuai Wang ◽  
Yu Ding ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Organic Solvents ◽  
Silica Aerogel ◽  
Ambient Pressure ◽  
Sol Gel ◽  
Ambient Pressure Drying ◽  
Tetraethyl Orthosilicate ◽  
Drying Process ◽  
High Adsorption ◽  
High Adsorption Capacity

Thiophene-bridged silica aerogel was prepared from tetraethyl orthosilicate (TEOS) and 2,5-divinyltrimethoxysilanethiophene (DVTHP) through a facile sol–gel reaction and ambient pressure drying process.

scholarly journals Silica Aerogel Monoliths Derived from Silica Hydrosol with Various Surfactants

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3192 ◽  
Author(s):  
Dong Chen ◽  
Xiaodong Wang ◽  
Wenhui Ding ◽  
Wenbing Zou ◽  
Qiong Zhu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Stability ◽  
Silica Aerogel ◽  
Low Cost ◽  
Ambient Pressure ◽  
Silica Aerogels ◽  
Ambient Pressure Drying ◽  
Low Thermal Conductivity ◽  
Silica Hydrosol ◽  
High Production Cost

Owing to their ultra-low thermal conductivity, silica aerogels are promising thermal insulators; however, their extensive application is limited by their high production cost. Thus, scientists have started to explore low-cost and easy preparation processes of silica aerogels. In this work, a low-cost method was proposed to prepare silica aerogels with industrial silica hydrosol and a subsequent ambient pressure drying (APD) process. Various surfactants (cationic, amphoteric, or anionic) were added to avoid solvent exchange and surface modification during the APD process. The effects of various surfactants on the microstructure, thermal conductivity, and thermal stability of the silica aerogels were studied. The results showed that the silica aerogels prepared with a cationic or anionic surfactant have better thermal stability than that prepared with an amphoteric surfactant. After being heated at 600 °C, the silica aerogel prepared with a cationic surfactant showed the highest specific surface area of 131 m2∙g−1 and the lowest thermal conductivity of 0.038 W∙m−1∙K−1. The obtained low-cost silica aerogel with low thermal conductivity could be widely applied as a thermal insulator for building and industrial energy-saving applications.

A silica aerogel as an extractive coating for in-tube solid-phase microextraction to determine polycyclic aromatic hydrocarbons in water samples

2019 ◽  
Vol 11 (45) ◽  
pp. 5784-5792 ◽  
Author(s):  
Xiangping Ji ◽  
Juanjuan Feng ◽  
Chunying Li ◽  
Sen Han ◽  
Jiaqing Feng ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Ambient Pressure ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Ambient Pressure Drying ◽  
Acid Base ◽  
Polycyclic Aromatic

A silica aerogel with high surface area was prepared by an acid–base two-step catalytic sol–gel method under ambient pressure drying.

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