期刊
TALANTA
卷 88, 期 -, 页码 290-294出版社
ELSEVIER
DOI: 10.1016/j.talanta.2011.10.043
关键词
Ag nanoclusters; Mercury; Turn-on; Colorimetric detection; Sensors
资金
- National Basic Research Program of China [2011CB936004, 2012CB720602]
- National Natural Science Foundation of China [21072182, 20331020, 20325101, 20473084, 90913007]
An easy prepared fluorescence turn-on and colorimetric dual channel probe was developed for rapid assay of Hg2+ ions with high sensitivity and selectivity by using poly(acrylic acid)-templated silver nanoclusters (PAA-AgNCs). The PAA-AgNCs exhibited weak fluorescence, while upon the addition of Hg2+ ions, AgNCs gives a dramatic increase in fluorescence as a result of the changes of the AgNCs states. The detection limit was estimated to be 2 nM, which is much lower than the Hg2+ detection requirement for drinking water of U.S. Environmental Protection Agency, and the turn-on sensing mode offers additional advantage to efficiently reduce background noise. Also, a colorimetric assay of Hg2+ ions can be realized due to the observed absorbance changes of the AgNCs. More importantly, the method was successfully applied to the determination of Hg2+ ions in real water samples, which suggests our proposed method has a great potential of application in environmental monitoring. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据