title: Fabrication of cellulose-based aerogels from waste newspaper without any pretreatment and their use for absorbents.
abstract: 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.
authors.affiliation: School of Engineering, Zhejiang Agricultural and Forestry University, Lin'an 311300, PR China; Key Laboratory of Wood Science and Technology, Zhejiang Province, PR China.
authors.forename: Chunde
authors.initials: C
authors.lastname: Jin
authors.affiliation: School of Engineering, Zhejiang Agricultural and Forestry University, Lin'an 311300, PR China.
authors.forename: Shenjie
authors.initials: S
authors.lastname: Han
authors.affiliation: School of Engineering, Zhejiang Agricultural and Forestry University, Lin'an 311300, PR China.
authors.forename: Jingpeng
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Engineering, Zhejiang Agricultural and Forestry University, Lin'an 311300, PR China. Electronic address: zafuqfsun@163.com.
authors.forename: Qingfeng
authors.initials: Q
authors.lastname: Sun
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D005782:Gels; D057927:Hydrophobic and Hydrophilic Interactions; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D009821:Oils / Q000737:chemistry; D010209:Paper; D016062:Porosity; D014297:Trimethylsilyl Compounds / Q000737:chemistry*; D014866:Waste Products
chemical_list: D005782:Gels; D007093:Imidazoles; D052578:Ionic Liquids; D009821:Oils; D014297:Trimethylsilyl Compounds; D014866:Waste Products; C039293:trimethylchlorosilane; D002482:Cellulose
keywords: Aerogel; Cellulose; Ionic liquid; Waste newspaper