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Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation

A facile and environmental-friendly approach was developed for the preparation of the cross-linked nanocellulose aerogel through the freeze-drying process and subsequent esterification. The as-prepared aerogel had a three-dimensional cellular microstructure with ultra-low density of 6.05 mg·cm(−3) a...

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Autores principales: Shang, Qianqian, Chen, Jianqiang, Hu, Yun, Yang, Xiaohui, Hu, Lihong, Liu, Chengguo, Ren, Xiaoli, Zhou, Yonghong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7921982/
https://www.ncbi.nlm.nih.gov/pubmed/33669607
http://dx.doi.org/10.3390/polym13040625
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author Shang, Qianqian
Chen, Jianqiang
Hu, Yun
Yang, Xiaohui
Hu, Lihong
Liu, Chengguo
Ren, Xiaoli
Zhou, Yonghong
author_facet Shang, Qianqian
Chen, Jianqiang
Hu, Yun
Yang, Xiaohui
Hu, Lihong
Liu, Chengguo
Ren, Xiaoli
Zhou, Yonghong
author_sort Shang, Qianqian
collection PubMed
description A facile and environmental-friendly approach was developed for the preparation of the cross-linked nanocellulose aerogel through the freeze-drying process and subsequent esterification. The as-prepared aerogel had a three-dimensional cellular microstructure with ultra-low density of 6.05 mg·cm(−3) and high porosity (99.61%). After modifying by chemical vapor deposition (CVD) with hexadecyltrimethoxysilane (HTMS), the nanocellulose aerogel displayed stable super-hydrophobicity and super-oleophilicity with water contact angle of 151°, and had excellent adsorption performance for various oil and organic solvents with the adsorption capacity of 77~226 g/g. Even after 30 cycles, the adsorption capacity of the nanocellulose aerogel for chloroform was as high as 170 g/g, indicating its outstanding reusability. Therefore, the superhydrophobic cross-linked nanocellulose aerogel is a promising oil adsorbent for wastewater treatment.
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spelling pubmed-79219822021-03-03 Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation Shang, Qianqian Chen, Jianqiang Hu, Yun Yang, Xiaohui Hu, Lihong Liu, Chengguo Ren, Xiaoli Zhou, Yonghong Polymers (Basel) Article A facile and environmental-friendly approach was developed for the preparation of the cross-linked nanocellulose aerogel through the freeze-drying process and subsequent esterification. The as-prepared aerogel had a three-dimensional cellular microstructure with ultra-low density of 6.05 mg·cm(−3) and high porosity (99.61%). After modifying by chemical vapor deposition (CVD) with hexadecyltrimethoxysilane (HTMS), the nanocellulose aerogel displayed stable super-hydrophobicity and super-oleophilicity with water contact angle of 151°, and had excellent adsorption performance for various oil and organic solvents with the adsorption capacity of 77~226 g/g. Even after 30 cycles, the adsorption capacity of the nanocellulose aerogel for chloroform was as high as 170 g/g, indicating its outstanding reusability. Therefore, the superhydrophobic cross-linked nanocellulose aerogel is a promising oil adsorbent for wastewater treatment. MDPI 2021-02-19 /pmc/articles/PMC7921982/ /pubmed/33669607 http://dx.doi.org/10.3390/polym13040625 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shang, Qianqian
Chen, Jianqiang
Hu, Yun
Yang, Xiaohui
Hu, Lihong
Liu, Chengguo
Ren, Xiaoli
Zhou, Yonghong
Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation
title Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation
title_full Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation
title_fullStr Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation
title_full_unstemmed Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation
title_short Facile Fabrication of Superhydrophobic Cross-Linked Nanocellulose Aerogels for Oil–Water Separation
title_sort facile fabrication of superhydrophobic cross-linked nanocellulose aerogels for oil–water separation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7921982/
https://www.ncbi.nlm.nih.gov/pubmed/33669607
http://dx.doi.org/10.3390/polym13040625
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