Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation

Abstract Graphene aerogels (GAs) are three-dimensional (3D) graphene sponges with unique wettability and have demonstrated the potential for reducing contamination from oil spills and chemical accidents. Herein, we report new polyurethane (PU) sponge-reinforced GAs with low surface energy, high sorp...

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Autores principales:	Yuanzheng Luo, Shenlin Jiang, Qi Xiao, Chuanliang Chen, Buyin Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9420ddebbba443c688c3a6b2913706ce
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spelling	oai:doaj.org-article:9420ddebbba443c688c3a6b2913706ce2021-12-02T12:32:17ZHighly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation10.1038/s41598-017-07583-02045-2322https://doaj.org/article/9420ddebbba443c688c3a6b2913706ce2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07583-0https://doaj.org/toc/2045-2322Abstract Graphene aerogels (GAs) are three-dimensional (3D) graphene sponges with unique wettability and have demonstrated the potential for reducing contamination from oil spills and chemical accidents. Herein, we report new polyurethane (PU) sponge-reinforced GAs with low surface energy, high sorption capacity and excellent recyclability for use as efficient oil sorbents. Spongy graphene aerogels (SGAs) with a hierarchical porous morphology were produced by simply freeze-casting reduced graphene oxide (rGO) to form compacted macroscale sponges. This novel micro-structure benefits from the advantages of embedded graphene and presents reversible large-strain deformation (90%), high compressive strength (63 kpa) and viscoelastic stability. These superior properties, in addition to super-hydrophobicity, endow the aerogels with excellent recyclability without deteriorating the oil absorption performance. Furthermore, SGA has selective and high-volume absorbability (>100%) and can efficiently separate oil from water under continuous pumping action. The excellent absorption performance and robust mechanical properties make this graphene material promising for the large-scale recovery of spilled oil.Yuanzheng LuoShenlin JiangQi XiaoChuanliang ChenBuyin LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuanzheng Luo Shenlin Jiang Qi Xiao Chuanliang Chen Buyin Li Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
description	Abstract Graphene aerogels (GAs) are three-dimensional (3D) graphene sponges with unique wettability and have demonstrated the potential for reducing contamination from oil spills and chemical accidents. Herein, we report new polyurethane (PU) sponge-reinforced GAs with low surface energy, high sorption capacity and excellent recyclability for use as efficient oil sorbents. Spongy graphene aerogels (SGAs) with a hierarchical porous morphology were produced by simply freeze-casting reduced graphene oxide (rGO) to form compacted macroscale sponges. This novel micro-structure benefits from the advantages of embedded graphene and presents reversible large-strain deformation (90%), high compressive strength (63 kpa) and viscoelastic stability. These superior properties, in addition to super-hydrophobicity, endow the aerogels with excellent recyclability without deteriorating the oil absorption performance. Furthermore, SGA has selective and high-volume absorbability (>100%) and can efficiently separate oil from water under continuous pumping action. The excellent absorption performance and robust mechanical properties make this graphene material promising for the large-scale recovery of spilled oil.
format	article
author	Yuanzheng Luo Shenlin Jiang Qi Xiao Chuanliang Chen Buyin Li
author_facet	Yuanzheng Luo Shenlin Jiang Qi Xiao Chuanliang Chen Buyin Li
author_sort	Yuanzheng Luo
title	Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
title_short	Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
title_full	Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
title_fullStr	Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
title_full_unstemmed	Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
title_sort	highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9420ddebbba443c688c3a6b2913706ce
work_keys_str_mv	AT yuanzhengluo highlyreusableandsuperhydrophobicspongygrapheneaerogelsforefficientoilwaterseparation AT shenlinjiang highlyreusableandsuperhydrophobicspongygrapheneaerogelsforefficientoilwaterseparation AT qixiao highlyreusableandsuperhydrophobicspongygrapheneaerogelsforefficientoilwaterseparation AT chuanliangchen highlyreusableandsuperhydrophobicspongygrapheneaerogelsforefficientoilwaterseparation AT buyinli highlyreusableandsuperhydrophobicspongygrapheneaerogelsforefficientoilwaterseparation
_version_	1718394108187246592

Highly reusable and superhydrophobic spongy graphene aerogels for efficient oil/water separation

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