Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-01-01

Journal: ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS

Included Journals: Scopus、PubMed、SCIE

Volume: 16

Issue: 1

Page Number: 116-123

ISSN: 2050-7887

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.