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Original Article | Open Access

Low Temperature Hydrothermal Synthesis of Ultra-light and Superelastic Graphene Oxide/Cellulose Aerogels for Absorption of Organic Liquids

Meng Wang1, ChangYou Shao1, SuKun Zhou1, Jun Yang1,2( ), Feng Xu1
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083, China
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640, China
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Abstract

Two-dimensional (2D) graphene oxide (GO) nanosheets and 1D 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO)-oxidized cellulose nanofibers (TOCN) were assembled into GO/TOCN aerogels via a low temperature hydrothermal and freeze-drying process. The as-prepared GO/TOCN aerogels exhibited interconnected 3D network microstructures, a low density of 6.8 mg/cm3, a high porosity up to 99.2% and excellent mechanical flexibility. The high porosity in conjunction with their hydrophobicity (contact angle of 121.5°), allowed the aerogels to absorb different organic liquids with absorption capacities up to 240 times of their own weight, depending on the density of the liquids. These results indicated that the aerogels were excellent candidates as sorbent materials for the clean-up of organic liquids. After five absorption-desorption cycles, the absorption capacity of the TOCN carbon aerogels could be regenerated up to 97% of the initial absorption capability, which demonstrated their excellent recyclability.

Keywords

graphene oxidecarbon aerogelcellulose nanofiber

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Paper and Biomaterials
Volume 3 Issue 1,
January 2018
Pages 17-25
DOI: 10.26599/PBM.2018.9260003
Cite this article:
Wang M, Shao C, Zhou S, et al. Low Temperature Hydrothermal Synthesis of Ultra-light and Superelastic Graphene Oxide/Cellulose Aerogels for Absorption of Organic Liquids. Paper and Biomaterials, 2018, 3(1): 17-25. https://doi.org/10.26599/PBM.2018.9260003

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Received: 01 November 2017
Accepted: 06 December 2017
Published: 01 January 2018
© 2018 Paper and Biomaterials Editorial Board

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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