An inorganic/organic hybrid magnetic network as a colorimetric fluorescent nanosensor and its recognizing behavior toward Hg2+
Source abstract
Abstract
Abstract An inorganic/organic hybrid magnetic Fe 3 O 4 @SiO 2 network functionalized with rhodamine derivatives was devised as a nanosensor for selective detection and removal of Hg 2+ in this work. The inorganic/organic hybrid composites showed naked-eye color change in water/methanol media. The distinct color change on the surface of functionalized composite network was observed by separating and drying from aqueous solution after adsorbing Hg 2+ . The fluorescence spectra indicated that the functionalized nanosensor was highly sensitive and selective to Hg 2+ in aqueous solution. Density functional theory (DFT) calculation was performed, which revealed a mechanism of fluorescence generated from Hg 2+ induced desulfurization of rhodamine derivatives via forming new five-membered ring structure. The as-obtained composites not only had an excellent adsorption capability for Hg 2+ , but also showed a strong magnetic sensitivity, which allowed one to separate the functionalized magnetic nanocomposites from the solution.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Molecular Sensors and Ion Detection · Luminescence and Fluorescent Materials · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
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