Nanotechnology Reviews | |
Adsorption performance of hydrophobic/hydrophilic silica aerogel for low concentration organic pollutant in aqueous solution | |
article | |
Zhigang Yi1  Qiong Tang1  Tao Jiang1  Ying Cheng1  | |
[1] Department of Chemistry, Leshan Normal University | |
关键词: Silica aerogels; Adsorbent; Organic pollutant; | |
DOI : 10.1515/ntrev-2019-0025 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: De Gruyter | |
【 摘 要 】
Hydrophobic silica aerogels (SiO 2 (AG)) was prepared via sol-gel and solvent exchange method under ambient pressure, which could be transformed to hydrophilic after heated under 500 ∘ C. Heat treatment cannot change its structure. SiO 2 (AG) samples were the micro-porous structure formed by numerous fine particles and had high specific surface area, pore size and pore volume. The absorption performance of hydrophobic/hydrophilic SiO 2 (AG) on nitrobenzene, phenol and methylene blue (MB) showed that hydrophobic SiO 2 (AG) exhibited strong adsorption capacity on slightly soluble organic compounds, while hydrophilic SiO 2 (AG) was much more effective on adsorbing soluble compounds, which could be analyzed by the hydrophobic and hydrophilic interaction theory between the adsorbent and adsorbate.Hydrophobic/hydrophilic SiO 2 (AG) adsorption performance for MB is superior to that for phenol, which could be explained via the electrostatic interaction theory.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO202107200004202ZK.pdf | 1062KB | download |