Multifunctional Fe3O4 nanoparticles for highly sensitive detection and removal of Al(iii) in aqueous solutionElectronic supplementary information (ESI) available. See DOI: 10.1039/c2nr33200k

Fe 3 O 4 nanoparticles (NPs) decorated with rhodamine 6G Schiff base, which exhibit high selectivity and sensitivity toward Al 3+ over other common metal ions in aqueous media under a physiological pH window via a 1 : 1 binding mode, have been synthesized and characterized. The resulting conjugate 1...

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Main Authors: Zhi, Lihua, Liu, Jian, Wang, Yuan, Zhang, Wei, Wang, Baodui, Xu, Zhuguo, Yang, Zhengyin, Huo, Xing, Li, Guangming
Format: Article
Language:English
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Summary:Fe 3 O 4 nanoparticles (NPs) decorated with rhodamine 6G Schiff base, which exhibit high selectivity and sensitivity toward Al 3+ over other common metal ions in aqueous media under a physiological pH window via a 1 : 1 binding mode, have been synthesized and characterized. The resulting conjugate 1c renders the rhodamine 6G Schiff base unit more water soluble, and the detection limit reaches 0.3 ppb in water. Moreover, 1c can detect Al 3+ in a wide pH span (5.0-11.0) and enrich/remove excess Al 3+ in water via an external magnetic field, which indicates that it has more potential and further practical applications for biology and toxicology. Furthermore, 1c provides good fluorescent imaging of Al 3+ in living cells. 6G Schiff base-coated Fe 3 O 4 NPs with sensitive and selective detection of Al 3+ in water have been synthesized and characterized.
ISSN:2040-3364
2040-3372
DOI:10.1039/c2nr33200k