Amidation modified hollow composite microspheres as a self-floating adsorbent for efficient capture of anionic dye DB86 and heavy metal nickel (II)

被引：0

作者：

Bao, Bing ^{[1
]}

Hu, Chao ^{[1
]}

Zheng, Qiquan ^{[1
]}

Huo, Guoyou ^{[2
]}

Jiang, Junyi ^{[1
]}

Zhang, Yuxin ^{[3
]}

Zheng, Huaili ^{[1
]}

Li, Hong ^{[1
]}

机构：

[1] Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, State Ministry of Education, Chongqing University, Chongqing,400045, China

[2] Shenzhen Shenshui Water Resources Consulting Co., Ltd, Shenzhen,518024, China

[3] College of Materials Science and Engineering, Chongqing University, Chongqing,400044, China

来源：

Environmental Science and Pollution Research | 2024年 / 31卷 / 49期

基金：

中国国家自然科学基金; 英国科研创新办公室;

关键词：

Adsorbents - Bioremediation - Driers (materials) - Gas adsorption - Metal ions - Nickel compounds - Positive ions - Wastewater treatment;

D O I：

10.1007/s11356-024-35151-3

中图分类号：

学科分类号：

摘要：

The co-contamination of dyes and heavy metal ions often used as mordants poses potential risks to environment and public health, and is a challenging problem that needs to be solved in water treatment. Meanwhile, improving the solid–liquid separation capability of adsorbents is of great significance for the application of adsorption technology. Herein, amidation modified hollow composite microspheres were prepared using hollow glass microsphere (HGM) as matrix through hydrolysis and condensation of silane coupling agent (A-1100) and subsequent amidation reaction. The material (HGMNE) not only exhibited good adsorption performance for DB86 and Ni2+ but also had stable self-floating capability. The adsorption of DB86 by HGMNE is mainly carried out by the electrostatic interaction between positively charged quaternary amine nitrogen and negatively charged DB86, while the adsorption of Ni2+ is achieved by the carboxyl group in EDTA group through complexation interaction to adsorb Ni2+ to form Ni complex. This research not only is devoted to the utilization of HGMNE to achieve the co-removal of DB86 and Ni2+ and flexible self-floating solid–liquid separation but also verifies the feasibility and applicability of the modification method of introducing organic adsorption functional groups through amidation reaction, so as to expand the preparation path of HGM-based adsorbents. Graphical abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

引用

页码：59140 / 59154