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基于纤维素纳米纤维/聚乙烯醇/氧化石墨烯（CNFs/PVA/GO）的超轻超疏水碳气凝胶用于高效油水分离。

Ultralight super-hydrophobic carbon aerogels based on cellulose nanofibers/poly(vinyl alcohol)/graphene oxide (CNFs/PVA/GO) for highly effective oil-water separation.

作者信息

Xu Zhaoyang, Zhou Huan, Tan Sicong, Jiang Xiangdong, Wu Weibing, Shi Jiangtao, Chen Peng

机构信息

College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.

Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology, Nanjing Forestry University, Nanjing 210037, China.

出版信息

Beilstein J Nanotechnol. 2018 Feb 12;9:508-519. doi: 10.3762/bjnano.9.49. eCollection 2018.

DOI:10.3762/bjnano.9.49
PMID:29527428
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5827779/
Abstract

With the worsening of the oil-product pollution problem, oil-water separation has attracted increased attention in recent years. In this study, a porous three-dimensional (3D) carbon aerogel based on cellulose nanofibers (CNFs), poly(vinyl alcohol) (PVA) and graphene oxide (GO) was synthesized by a facile and green approach. The resulting CNF/PVA/GO aerogels were synthesized through an environmentally friendly freeze-drying process and then carbonized to yield CNF/PVA/GO carbon aerogels with low density (18.41 mg cm), high porosity (98.98%), a water contact angle of 156° (super-hydrophobic) and high oil absorption capacity (97 times its own weight). The carbonization treatment of the CNF/PVA/GO aerogel not only improved the hydrophobic properties but also enhanced the adsorption capacity and specific surface area. Given the many good performance characteristics and the facile preparation process of carbon aerogels, these materials are viable candidates for use in oil-water separation and environmental protection.

摘要

随着油品污染问题的日益严重，油水分离近年来受到了越来越多的关注。在本研究中，通过一种简便且绿色的方法合成了一种基于纤维素纳米纤维（CNF）、聚乙烯醇（PVA）和氧化石墨烯（GO）的多孔三维（3D）碳气凝胶。所得的CNF/PVA/GO气凝胶通过环保的冷冻干燥过程合成，然后碳化以得到低密度（18.41 mg/cm）、高孔隙率（98.98%）、水接触角为156°（超疏水）且吸油能力高（为自身重量的97倍）的CNF/PVA/GO碳气凝胶。CNF/PVA/GO气凝胶的碳化处理不仅改善了疏水性能，还提高了吸附能力和比表面积。鉴于碳气凝胶具有许多良好的性能特点以及简便的制备过程，这些材料是用于油水分离和环境保护的可行候选材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/c9e2e4696b5c/Beilstein_J_Nanotechnol-09-508-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/d195d6b5da6a/Beilstein_J_Nanotechnol-09-508-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/3f2d05dc333c/Beilstein_J_Nanotechnol-09-508-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/991c6f91c3e4/Beilstein_J_Nanotechnol-09-508-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/858e9d79125c/Beilstein_J_Nanotechnol-09-508-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/e5557c3c0f30/Beilstein_J_Nanotechnol-09-508-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/8d2b962d01f1/Beilstein_J_Nanotechnol-09-508-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/163338967b2f/Beilstein_J_Nanotechnol-09-508-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/9411e9eca268/Beilstein_J_Nanotechnol-09-508-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/19e97e12e951/Beilstein_J_Nanotechnol-09-508-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/7d83033bb4eb/Beilstein_J_Nanotechnol-09-508-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/2bc49501dfaf/Beilstein_J_Nanotechnol-09-508-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/c9e2e4696b5c/Beilstein_J_Nanotechnol-09-508-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/d195d6b5da6a/Beilstein_J_Nanotechnol-09-508-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/3f2d05dc333c/Beilstein_J_Nanotechnol-09-508-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/991c6f91c3e4/Beilstein_J_Nanotechnol-09-508-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/858e9d79125c/Beilstein_J_Nanotechnol-09-508-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/e5557c3c0f30/Beilstein_J_Nanotechnol-09-508-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/8d2b962d01f1/Beilstein_J_Nanotechnol-09-508-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/163338967b2f/Beilstein_J_Nanotechnol-09-508-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/9411e9eca268/Beilstein_J_Nanotechnol-09-508-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/19e97e12e951/Beilstein_J_Nanotechnol-09-508-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/7d83033bb4eb/Beilstein_J_Nanotechnol-09-508-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/2bc49501dfaf/Beilstein_J_Nanotechnol-09-508-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d235/5827779/c9e2e4696b5c/Beilstein_J_Nanotechnol-09-508-g013.jpg

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