聚离子液体改性废报纸基纤维素气凝胶及其染料吸附性能研究

宋文琦; 杨苗秀; 郑乐; 杨金腾; 历亚星; 訾帅; 罗晨; 刘玉坤; 钱立伟

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Study on Polymeric Ionic Liquid Modified Waste Newspaper-based Cellulosic Aerogel and Its Dye Adsorption Performance

Received:June 21, 2021

DOI：10.11981/j.issn.1000-6842.2021.03.34

Key Words:waste newspaper;aerogel;graft modification;adsorption;acid orange II

Fund Project:国家自然科学基金项目（21805177）；陕西科技大学开放基金（XTKF-2019-06）；西京学院特区人才基金（XJ18T03）；陕西省教育厅一般专项科研计划项目（21JK0955）。

Author Name	Affiliation	Postcode
SONG Wenqi^*	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123 Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry & Technology， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021	710021
YANG Miaoxiu	China Pulp and Paper Research Institute Co.， Ltd.， Beijing， 100102	100102
ZHENG Le	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123	710123
YANG Jinteng	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123	710123
LI Yaxing	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123	710123
ZI Shuai	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123	710123
LUO Chen	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123	710123
LIU Yukun	School of Science， Xijing University， Xi'an， Shaanxi Province， 710123	710123
QIAN Liwei	Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry & Technology， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021	710021

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Abstract:

In this study， the waste newspaper （WNP） was purified via ultrasonic deinking to obtain the deinked cellulose fiber which was then dissolved in alkaline solvent system and cross-linked to prepare regenerated cellulose aerogel （WNCA）. The poly（1-vinyl-3-butylimidazole bromide） brush modified cellulosic aerogel adsorbent （WNCA-g-PBVIMBr） was obtained by chemical grafting. The chemical structure and physical morphology of WNCA-g-PBVIMBr were studied， and the adsorption performance and mechanism towards acid orange II （AO II） were explored as well. The results showed that the PBVIMBr polymer brush with an average molecular weight of 3780 g/mol was uniformly grafted on the surface of WNCA， of which the maximum adsorption capacity towards AO II could reach 351 mg/g. The adsorption process conformed to the pseudo-second-order kinetic model and Langmuir adsorption isotherm model， indicating chemical adsorption played a key role in the adsorption process.

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