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Synthesis of two-dimensional bismuth molybdenum oxide (2D-BMO) nanosheets and their application as fluorescent probes for the detection of explosive nitroaromatic compounds
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DOI：10.1039/d4en00517a.png)
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Abstract
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2D-BMO fluorescent nanosheets were synthesized using a solvothermal method followed by probe sonication. These nanosheets were then employed as fluorescent probes for detecting nitroaromatic compounds picric acid (PA) and 2,4-dinitrophenylhydrazine (2,4-DNPH), which have recently garnered significant attention due to their explosive nature and environmental impact. The fluorescent nanoplatform exhibited stable fluorescence emission at a wavelength of 400 nm (lambda em) when excited at 340 nm (lambda ex). The fluorescence quenching response towards PA and 2,4-DNPH was assessed within a concentration range of 50 to 2000 nM, showing linear responses within the ranges of 50-1100 nM and 50-1400 nM, respectively. The limits of detection were determined to be 2.21 nM for PA and 2.30 nM for 2,4-DNPH, with corresponding R2 values of 0.999 and 0.994. The interaction between the 2D-BMO nanosheets and nitroaromatics was the synergistic combination of the FRET, IFE, and electrostatic interaction, which was studied and explained by UV-visible absorption spectroscopy and zeta potential analysis. This 2D-BMO fluorescent sensor could pave the way for replacing traditional dyes that pose significant harm to the environment in the foreseeable future. 2D-BMO fluorescent nanosheets were synthesized using a solvothermal method followed by probe sonication.
Keywords:
FACILE SYNTHESIS
QUANTUM DOTS
STRATEGIES
BI2MOO6
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