期刊
CARBOHYDRATE POLYMERS
卷 123, 期 -, 页码 150-156出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.01.056
关键词
Aerogel; Cellulose; Ionic liquid; Waste newspaper
资金
- Zhejiang Provincial Natural Science Foundation of China [LZ14C160001]
Cellulose-based aerogel (CBA) was prepared from waste newspaper (WNP) without any pretreatment using 1-allyl-3-methyimidazolium chloride (AmImCl) as a solvent via regeneration and an environmentally friendly freeze-drying method. After being treated with trimethylchlorosilane (TMCS) via a simple thermal chemical vapor deposition process, the resulting CBAs were rendered both hydrophobic and oleophilic. Successful silanization on the surface of the porous CBA was verified by a variety of techniques including scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), and water contact angle (WCA) measurements. As a result, the silane-coated, interconnected CBAs not only exhibited good absorption performance for oils (e.g., waste engine oil), but also showed absorption capacity for organic solvents such as chloroform (with a representative weight gain ranging from 11 to 22 times of their own dry weight), making them diversified absorbents for potential applications including sewage purification. (C) 2015 Elsevier Ltd. All rights reserved.
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