吸附
化学
气凝胶
氢键
朗缪尔吸附模型
疏水效应
堆积
两亲性
高分子化学
有机化学
化学工程
分子
聚合物
共聚物
工程类
作者
Yifan Liu,Zuxue Liang,Chunxiang Lin,Xiaoxia Ye,Yuancai Lv,Pingfan Xu,Minghua Liu
出处
期刊:Chemosphere
[Elsevier]
日期:2022-03-01
卷期号:291: 132978-132978
被引量:9
标识
DOI:10.1016/j.chemosphere.2021.132978
摘要
An amphiphilic cellulose aerogel (HCNC-TPB/TMC) was fabricated by grafting 1,3,5-Tris (4-aminophenyl)benzene (TPB) and trimesoyl chloride (TMC) onto the aldehyde nanocellulose through Schiff alkali and substitution reaction. The obtained HCNC-TPB/TMC exhibited good morphology with cellulose fiber and owned abundant hydrophilic amino and carboxyl groups and hydrophobic aromatic groups. The batch adsorption experiments demonstrated that HCNC-TPB/TMC showed excellent adsorption performance (Qmax = 526.32 mg g-1) for sodium diclofenac (DCF), wide pH applicability (4-10) and outstanding stability and reusability. The DCF adsorption obeyed the pseudo-second-order kinetic model and the Langmuir isotherm, and underwent a spontaneous exothermic process. The main adsorption mechanisms involved electrostatic interaction, hydrogen bonds, π-π stacking interaction and hydrophobic effect. Importantly, the introduced carboxyl aromatic groups on TMC could effectively strengthen the hydrogen bonds and the π-π stacking between HCNC-TPB/TMC and DCF.
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