气凝胶
纳米纤维素
材料科学
吸附
化学工程
多孔性
接触角
制作
纤维素
纳米技术
复合材料
有机化学
化学
病理
工程类
替代医学
医学
作者
Qianqian Shang,Jianqiang Chen,Yun Hu,Xiaohui Yang,Lihong Hu,Chengguo Liu,Xiaoli Ren,Yonghong Zhou
出处
期刊:Polymers
[MDPI AG]
日期:2021-02-19
卷期号:13 (4): 625-625
被引量:42
标识
DOI:10.3390/polym13040625
摘要
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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