Facile preparation of fluorescent Au nanoclusters-based test papers for recyclable detection of Hg2+ and Pb2+

被引：73
作者：
Bian, Rui-Xin [1 ,2 ]
Wu, Xiao-Tong [2 ]
Chai, Fang [1 ,2 ]
Li, Lu [2 ]
Zhang, Ling-Yu [2 ]
Wang, Ting-Ting [3 ]
Wang, Chun-Gang [2 ]
Su, Zhong-Min [2 ,3 ]
机构：
[1] Harbin Normal Univ, Coll Chem & Chem Engn, Coll Heilongjiang Prov, Key Lab Design & Synth Funct Mat & Green Catalysi, Harbin 150025, Peoples R China
[2] Northeast Normal Univ, Coll Chem, Changchun 130024, Jilin, Peoples R China
[3] Changchun Univ Sci & Technol, Fac Chem & Environm Engn, Changchun 130022, Jilin, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 241卷
基金：
中国博士后科学基金;
关键词：
Heavy metal ion detection; Au nanoclusters; Test papers; Cyclic utilization; Aggregation-induced fluorescence quenching and enhancement; AGGREGATION-INDUCED EMISSION; GOLD NANOCLUSTERS; AQUEOUS-MEDIA; METAL-IONS; BIOLOGICAL APPLICATIONS; LIVING CELLS; PPT LEVEL; NANOPARTICLES; CLUSTERS; SPECTROSCOPY;
D O I：
10.1016/j.snb.2016.10.120
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A simple, portable and recyclable method has been developed for on-site and real-time detection of Hg2+ and Pb2+ by naked eyes by using Au nanoclusters-based test paper as the fluorescent sensor. The high specificity of Hg2+ and Pb2+ to Au nanoclusters provided excellent selectivity over 15 kinds of other ions. Interestingly, an apparent fluorescent quenching of the test paper was shown when exposed to Hg2+, while a significant fluorescent enhancement was observed in the presence of Pb2+, which could be attributed to aggregation-induced fluorescence quenching and enhancement. The limit of detection for Hg2+ and Pb2+ by naked eyes was 5 mu M and 50 mu M, respectively. More importantly, the cyclic utilization of the test paper was achieved by immersing the test papers into ethylenediamine tetraacetic acid to recover the fluorescence of the test paper, which contributed to reducing resource consumption. Otherwise, the GSH-AuNCs test paper was competent for a practical application in environmental water samples with strong anti-interference ability. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：592 / 600
页数：9
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