Neelamegan Haridharan, Yang Der-Kang, Lee Gang-Juan, Anandan Sambandam, Sorrentino Andrea, Wu Jerry J
Department of Environmental Engineering and Science, Feng Chia University, Taichung 407, Taiwan.
Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620015, India.
ACS Omega. 2020 Mar 27;5(13):7201-7210. doi: 10.1021/acsomega.9b03653. eCollection 2020 Apr 7.
In this work, hydrophilic polymers modified with iron oxide nanoparticles, such as iron oxide-poly(2-dimethylaminoethyl methacrylate) [P(DMAEMA)] magnetite-based and iron oxide-poly(acrylamide) [P(AAm)] magnetite-based polymers, were prepared via a single electron transfer-living radical polymerization approach. Bile acid and 2-bromo-2-methylpropionic acid were covalently attached onto the surface of FeO nanoparticles, and these immobilized magnetite nanoparticles were used as an initiator for the polymerization. The binding capabilities of different ions, such as Hg, CN, Cl, F, and NO , were tested using these polymeric sensors monitored by UV-vis spectroscopy. Magnetite-based P(DMAEMA) showed enhanced binding capability due to the presence of tertiary amine groups. In addition, it was possible to easily separate the bound ions from aqueous media using an external magnetic field.
在这项工作中，通过单电子转移活性自由基聚合方法制备了用氧化铁纳米粒子改性的亲水性聚合物，如基于氧化铁 - 聚（甲基丙烯酸2 - 二甲氨基乙酯）[P（DMAEMA）]磁铁矿和基于氧化铁 - 聚（丙烯酰胺）[P（AAm）]磁铁矿的聚合物。将胆汁酸和2 - 溴 - 2 - 甲基丙酸共价连接到FeO纳米颗粒的表面，并且这些固定化的磁铁矿纳米颗粒用作聚合反应的引发剂。使用通过紫外 - 可见光谱监测的这些聚合物传感器测试了不同离子（如Hg、CN、Cl、F和NO）的结合能力。基于磁铁矿的P（DMAEMA）由于叔胺基团的存在而显示出增强的结合能力。此外，使用外部磁场可以很容易地从水性介质中分离出结合的离子。
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