纳米纤维素
阳离子聚合
纤维素
化学工程
水溶液
表面改性
环境友好型
材料科学
纳米复合材料
溶解
再生纤维素
环境修复
化学
高分子化学
复合材料
有机化学
污染
工程类
生物
生态学
作者
Yun-Jin Kim,Junsik Bang,Jungkyu Kim,June-Ho Choi,Sung-Wook Hwang,Hwanmyeong Yeo,In-Gyu Choi,Hyoung‐Joon Jin,Hyo Won Kwak
标识
DOI:10.1016/j.carbpol.2021.118930
摘要
Because nanocellulose has a large specific surface area and abundant hydroxyl functional groups due to its unique nanomorphology, interest increases as an eco-friendly water treatment material. However, the distinctive properties of nanocellulose, which exists in a dispersion state, strongly hamper its usage in practical water treatment processes. Additionally, nanocellulose shows low performance in removing anionic pollutants because of its anionic characteristics. In an effort to address this challenge, regenerated cellulose (RC) hydrogel was fabricated through cellulose's dissolution and regeneration process using an eco-friendly aqueous solvent system. Subsequently, a crosslinking process was carried out to introduce the cationic functional groups to the RC surface PEI coating (P/RC). As a result, the PEI surface cationization process improved the mechanical rigidity of RC and showed an excellent Cr(VI) removal capacity of 578 mg/g. In addition, the prepared P/RC maintained more than 90% removal efficiency even after seven reuses.
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