Title
Fabrication of water soluble and luminescent Eu2O3 nanoparticles for specific quantification of aromatic nitrophenols in aqueous media
Author
Savita Chaudhary, Sandeep Kumar, S. K. Mehta, Ahmad Umar, M. Ajmal Khan
Year
2019
Journal
Chemical Physics Letters
Abstract
The current work deals with the synthesis of bare and surface modified Europium oxide (Eu2O3) nanoparticles in aqueous-media. The synthesized Eu2O3 possess intense fluorescence-emission-peak between 350 and 500 nm when excited at 338 nm. Due to the presence of surface-modification with (3-aminopropyltriethexoysilane) APTES, the synthesized Eu2O3 showed high-selectivity to detect aromatic nitro-compounds through quenched fluorescence emission. The emission-peak intensity of Eu2O3 was found to be quenched with increasing concentration of aromatic-nitro-compounds. Thereby, detection-limit of 4.6 μM, 0.9 μM and 0.12 μM was obtained for 2-nitrophenol (PNP), 2,4-dinitrophenol (DNP) and 2,4,6-trinitrophenol (TNP). The sensing aptitude of nanosensor was subsequently evaluated in spiked-water-samples, suggesting the effectiveness of sensor for assaying of nitro-compounds in real-samples.
Instrument
V-550
Keywords
Absorption, Nanostructures, Materials