Citation: Liu Qun, Zhang Zhihua, Liu Yuan, Wang Xiaodong, Shen Jun. Study on the Adsorption Performance of Silica Aerogel on Volatile Organic Compounds[J]. Chemistry, ;2020, 83(6): 552-556, 507. shu

Study on the Adsorption Performance of Silica Aerogel on Volatile Organic Compounds

Liu Qun ^1,2 ,
Zhang Zhihua ^1,, ,
Liu Yuan ² ,
Wang Xiaodong ¹ ,
Shen Jun ¹

1.
Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Department of Physics Science and Engineering of Tongji University, Shanghai, 200092
2.
College of Science, University of Shanghai for Science and Technology, Shanghai, 200093

Corresponding author: Zhang Zhihua, zzhtj@tongji.edu.cn
Received Date: 8 December 2019
Accepted Date: 6 February 2020

Figures(5)

The regular silica aerogel was synthesized through a one-step process using TEOS as precursor, ethanol as solvent and hydrofluoric acid as catalyst. After alcohol supercritical drying, the silica aerogel sample was characterized by SEM, FTIR, and nitrogen adsorption-desorption isotherms to better understand the relationship of the adsorption mechanism-property. The results indicated that the sample has a high specific surface area of 519m²/g, a pore volume of 1.9cm³/g and a large pore size of 15.15nm. The adsorption properties of the prepared samples for volatile organic compounds (VOCs) were tested. Toluene, paraxylene and benzene were selected as typical adsorbates due to their extensive utilization in industry. The results showed that silica aerogel has high adsorption capacity for all three pollutants. The high adsorption ability of silica aerogel is attributed to the nano-network structure and the small pore size. Therefore, the silica aerogel is a promising adsorbent for VOCs disposal with superior adsorption ability.
- Silica aerogel,
- VOCs adsorption,
- adsorbent
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沈阳化工大学材料科学与工程学院沈阳 110142