A robust, superhydrophobic graphene aerogel as a recyclable sorbent for oils and organic solvents at various temperatures

被引:70
|
作者
Ren, Rui-Peng [1 ]
Li, Wei [1 ]
Lv, Yong-Kang [1 ]
机构
[1] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Minist Educ & Shanxi Prov, Taiyuan 030024, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Graphene aerogel; Sorbent; Harsh conditions; POLYURETHANE SPONGE; HIGHLY EFFICIENT; FUNCTIONALIZED GRAPHENE; WATER SURFACES; SPILL CLEANUP; REMOVAL; SORPTION; OXIDE; FOAM; HYDROGELS;
D O I
10.1016/j.jcis.2017.01.071
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
To address oil spillage and organic contaminant problems, the preparation of efficient sorbent materials is of great importance for global environment and water source protection. Despite extensive studies, sorbents with both high efficiency and recyclability are still desired, particularly with the outstanding sorption performance for different temperature environmental conditions. Herein, we report a robust reduced graphene aerogel (rGA) as an efficient and recyclable sorbent for oils and organic solvents, which shows highly efficient absorption of various oils and organic solvents (up to 19-26 times of its own weight) and excellent recyclability (>5 times) by heat treatment. Moreover, the absorption ability of rGA can be maintained over a wide temperature range of -40 degrees C to 240 degrees C, which can be attributed to the inherent excellent thermal stability of graphene and good heat dispersal of three dimensional network structure. Based on these excellent properties, the rGA is considered to be an ideal material can be employed for separation and absorption of waste oil and organic contaminants from the water surface at various temperatures. (C) 2017 Published by Elsevier Inc.
引用
收藏
页码:63 / +
页数:11
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