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Issue 1, 2014
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Magnetically recoverable fluorescence chemosensor for the adsorption and selective detection of Hg2+ in water

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Abstract

In order to conveniently and effectively detect the heavy metal ion Hg2+ existing in water, a magnetic fluorescence chemosensor has been strategically prepared by immobilizing a Rhodamine B derivative RhB–tris(2-aminoethyl)amine on Fe3O4@SiO2–Au@PSiO2 composites via gold particles. The adsorption and detection for Hg2+ ions were investigated with fluorophotometry. This chemosensor shows high sensitivity and high selectivity for Hg2+ over other metal cations owing to the ring opening of the rhodamine fluorophore selectively induced by Hg2+. In addition, the presence of Fe3O4 in the sensor also facilitates the magnetic separation of the Fe3O4@SiO2–Au–Hg2+@PSiO2 from the solution.

Graphical abstract: Magnetically recoverable fluorescence chemosensor for the adsorption and selective detection of Hg2+ in water

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Supplementary files

Article information


Submitted
06 Sep 2013
Accepted
18 Oct 2013
First published
23 Oct 2013

Environ. Sci.: Processes Impacts, 2014,16, 116-123
Article type
Paper

Magnetically recoverable fluorescence chemosensor for the adsorption and selective detection of Hg2+ in water

Q. Lv, G. Li, Z. Cheng, H. Lu and X. Gao, Environ. Sci.: Processes Impacts, 2014, 16, 116
DOI: 10.1039/C3EM00462G

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