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CLC number: R284.2

On-line Access: 2021-10-18

Received: 2020-10-03

Revision Accepted: 2021-02-14

Crosschecked: 2021-09-27

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Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Hong-xiang Ou

https://orcid.org/0000-0001-8329-8014

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Journal of Zhejiang University SCIENCE A

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Adsorption of tetrodotoxin by flexible shape-memory polymers synthesized from silica-stabilized Pickering high internal phase emulsion


Author(s):  Hong-xiang Ou, Chen-xia Gong, Hong-lai Xue, Dong-sheng Zhou, Kai-jia Li, Shu-cheng Liu

Affiliation(s):  School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China; more

Corresponding email(s):  ouhongxiang@cczu.edu.cn

Key Words:  Tetrodotoxin (TTX); SiO2; Imidazolium-modified bromobutyl rubber (IBR); Pickering high internal phase emulsion (HIPE); Adsorption


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Hong-xiang Ou, Chen-xia Gong, Hong-lai Xue, Dong-sheng Zhou, Kai-jia Li, Shu-cheng Liu. Adsorption of tetrodotoxin by flexible shape-memory polymers synthesized from silica-stabilized Pickering high internal phase emulsion[J]. Journal of Zhejiang University Science A, 2021, 22(4): 805-818.

@article{title="Adsorption of tetrodotoxin by flexible shape-memory polymers synthesized from silica-stabilized Pickering high internal phase emulsion",
author="Hong-xiang Ou, Chen-xia Gong, Hong-lai Xue, Dong-sheng Zhou, Kai-jia Li, Shu-cheng Liu",
journal="Journal of Zhejiang University Science A",
volume="22",
number="10",
pages="805-818",
year="2021",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2000433"
}

%0 Journal Article
%T Adsorption of tetrodotoxin by flexible shape-memory polymers synthesized from silica-stabilized Pickering high internal phase emulsion
%A Hong-xiang Ou
%A Chen-xia Gong
%A Hong-lai Xue
%A Dong-sheng Zhou
%A Kai-jia Li
%A Shu-cheng Liu
%J Journal of Zhejiang University SCIENCE A
%V 22
%N 10
%P 805-818
%@ 1673-565X
%D 2021
%I Zhejiang University Press & Springer

TY - JOUR
T1 - Adsorption of tetrodotoxin by flexible shape-memory polymers synthesized from silica-stabilized Pickering high internal phase emulsion
A1 - Hong-xiang Ou
A1 - Chen-xia Gong
A1 - Hong-lai Xue
A1 - Dong-sheng Zhou
A1 - Kai-jia Li
A1 - Shu-cheng Liu
J0 - Journal of Zhejiang University Science A
VL - 22
IS - 10
SP - 805
EP - 818
%@ 1673-565X
Y1 - 2021
PB - Zhejiang University Press & Springer
ER -


Abstract: 
Flexible shape-memory polymers were synthesized by Pickering high internal phase emulsion (HIPE) polymerization and used to adsorb and separate tetrodotoxin (TTX) from an aqueous solution. SiO2 nanoparticles were used to stabilize the Pickering oil-in-water (O/W) HIPEs. We introduced imidazolium-modified bromobutyl rubber (IBR) with excellent mechanical properties and high viscosity into the emulsion system as the shape-memory monomer. The properties, such as shape memory and morphology, were characterized by various methods, and batches of static adsorption experiments were conducted to analyze the adsorption performance of SiO2@IBR on TTX. The characterization revealed that the SiO2@IBR had a porous structure and good shape memory. Thus, the combination of SiO2 particles and IBR prevented shedding of SiO2 and enhanced the mechanical and adsorption properties of SiO2@IBR. The results of the adsorption experiments indicated that the SiO2@IBR had good adsorption of TTX. Both the Langmuir and Freundlich models fitted the isothermal adsorption experiment process. The TTX adsorption capacity of SiO2@IBR was about 290.44 mg/g at 308 K. The fitting results of the pseudo-first-order and pseudo-second-order kinetic models showed that the adsorption process involved both chemical bonding and physical adsorption. After 10 adsorption and desorption experiments, the adsorption capacity of SiO2@IBR decreased less than 0.03%, indicating that it had good adsorption and regeneration performance.

二氧化硅稳定Pickering高内相乳液制备柔性形状记忆聚合物(SiO2@IBR)吸附河豚毒素

目的:本文采用Pickering高内相乳液(HIPEs)聚合制备一种具有良好吸附能力和再生性能的形状记忆大孔聚合物,并用于从水溶液中吸附和分离河豚毒素.
创新点:1. 将SiO2纳米粒子用作乳液的稳定粒子,通过Pickering HIPEs聚合法将SiO2粒子连接在一起,使吸附后收集吸附剂变得方便;2. 高粘弹性的咪唑改性溴化丁基橡胶均匀分布在聚合物的间隙和表面上,从而使吸附剂具有良好的机械性能和形状记忆功能.
方法:1. 通过Pickering HIPEs聚合制备柔性形状记忆吸附剂(SiO2@IBR);2. 通过多种表征方法确定SiO2@IBR是否成功形成;3. 通过批量吸附实验测定SiO2@IBR对河豚毒素的吸附性能.
结论:1. SiO2@IBR具有清晰的大孔结构和良好的柔韧性,其独特的"形状记忆"特性有利于吸附和解吸;2. SiO2@ IBR是一种有效且有前景的吸附剂,其对河豚毒素具有良好的吸附效果;3. 准一级和准二级动力学模型表明吸附过程存在化学吸附并伴随着物理吸附;4. 再生实验结果表明SiO2@IBR具有良好的吸附再生性能:经过10个循环,吸附量仅降低不到0.03%.

关键词组:河豚毒素;二氧化硅;咪唑改性溴化丁基橡胶;皮克林高内相乳液;吸附

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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