文献类型：期刊文献

英文题名：An architectural exfoliated-graphene carbon aerogel with superhydrophobicity and efficient selectivity

作者：Lu, Yutong[1,2] Wang, Huiqing[3] Lu, Yun[1]

第一作者：Lu, Yutong

通信作者：Lu, Y[1]|[a000547dbdc9826482af5]卢芸;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Beijing 100083, Peoples R China;[3]Hefei Univ Technol, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Hefei 230009, Anhui, Peoples R China

年份：2019

卷号：184

外文期刊名：MATERIALS & DESIGN

收录：;EI(收录号：20193707416275);Scopus(收录号：2-s2.0-85071865078);WOS:【SCI-EXPANDED(收录号:WOS:000504928300001)】；

基金：This work was financially supported by the Fundamental Research Funds of CAF (Grant No. CAFYBB2017ZX003), the National Natural Science Foundation of China (Grant No. 31870535, 31500468, 51603059), and the Fundamental Research Funds for the Central Universities of China (106-4115100027).

语种：英文

外文关键词：Exfoliated graphene; Superhydrophobic; Sorbent; Carbonization; Nano-fibrillated cellulose; Graphene

摘要：In the study, in order to completely utilize the advantages of graphene monolayer, nano-fibrillated cellulose with cations from polyethyleneimine (PEI) was used as the intercalator to efficiently exfoliate the reduced graphene oxide into a single layer with a thickness about 0.47 nm by means of ionic attraction. After the high-temperature treatment (800 degrees C), the carbon aerogel (NC-GO@NFC) with an architectural structure was manufactured by combining 2D monolayer graphene with 1D nano-fibrillated cellulose. The pore volume (0.55 cm(3)/g) and specific surface area (441 m(2)/g) of NC-GO@NFC were about two times higher than those of GOcarbon aerogel. Particularly, the buoyant porous aerogel showed superhydrophobicity with a large water contact angle (155.5 degrees) due to the increase of -NH- and C-C as well as the pyrolysis of hydrophilic groups. The superhydrophobicity endows the aerogel with an exceptional oil/water separation performance. The carbon aerogels exhibited the adsorption capability towards many organic phases (including lubricating oil and some organic solvents). In addition, the efficient continuous removal and collection of organic solvents (methylbenzene) from water surface was achieved by a designed water/oil pump device. Therefore, the recyclable 3D porous composite aerogel had the application potential as organic solvent adsorbents and oil/water separation agents. (C) 2019 The Authors. Published by Elsevier Ltd.