文献类型：期刊文献

英文题名：A reusable bifunctional fluorescent sensor for the detection and removal of silver ions in aqueous solutions

作者：Wu, Huijing[1];Jia, Junhua[1];Xu, Yufang[1];Qian, Xuhong[1];Zhu, Weiping[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Chem Biol, Sch Pharm, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：265

起止页码：59

外文期刊名：SENSORS AND ACTUATORS B-CHEMICAL

收录：;EI(收录号：20181504988628);WOS:【SCI-EXPANDED(收录号:WOS:000430232500007)】；

基金：We thank the financial support from the National Natural Science Foundation of China (21476077, 21236002), National High Technology Research and Development Program of China (2012AA061601), and Shanghai Pujiang Program.

语种：英文

外文关键词：Fluorescent sensor; Silver ions; Detection; Removal; Reusable

摘要：In this work, a novel bifunctional fluorescent sensor (FQ) was developed for simultaneous detection and removal of Ag+ in aqueous solutions by grafting a naphthalimide-based fluorescent probe onto the surface of the mesoporous silica nanoparticles. FQ exhibited good selectivity towards Ag+ in water samples, and showed 2.5-fold enhancement of fluorescence intensity with the addition of Ag+. Meanwhile, FQ showed a very good linearity at a low concentration of Ag+ with a detection limit of 7.2 x 10(-6) M. In addition, FQ can also serve as an adsorbent for the removal of Ag+ in water samples with the maximal adsorption capacity of 14.8 mg g(-1). FQ can be regenerated easily by modulating the pH value of the aqueous solution, and can be recycled at least eight times. All results demonstrate that FQ has potential applications for the detection and removal of Ag+ in aqueous samples. (C) 2018 Elsevier B.V. All rights reserved.