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- W3174529897 abstract "In this work, a novel strategy was addressed to fabricate new sensing probe (N-CDs@NaFZ) from nitrogen doped carbon dots (N-CDs) confined in Al-free ferrisilicates zeolite (NaFZ) by hydrothermal/solvothermal method. The probe was systematically characterized by HR-TEM, FTIR, energy dispersive X-ray (EDX), powder X-ray diffraction, and UV–Vis absorption and fluorescence spectrophotometers. Characterization of the designed nanocomposite template N-CDs@NaFZ by fluorescence spectrum demonstrates a variety of important conducts as stability improvements, reasonable dispersibility in water, highly emission intensity enhancement at 435 nm when excited at 340 nm, excitation independent fluorescence behaviors, great quantum yield percentage of 91.2%, and narrow size distribution 12 nm, as a nano-space confinement effect of zeolite effectively increase the rigidity of N-CDs. Based on the fluorescence quenching mechanism, the designed approach exhibits an excellent selectivity and good sensitive response to the presence of Hg(II) ions under ambient temperature, with a wide linear range of 0.1–1500 nM and lower detection limits of 5.5 pM. Influences of variables pH and incubation time were optimized. The N-CDs@NaFZ sensor was effectively applied for the detection of Hg(II) ions in the farmed and wild rainbow trout fishes, and the results are in reasonable agreement when compared with that obtained by the cold vapor atomic absorption method. • Develop a novel nanocomposite by embedding carbon dots in the zeolite matrix. • A variety of characterization techniques were used to analyze the nanocomposite's structure and properties. • During the synthesis process, a simple hydrothermal method was used. • The new sensor approach responds to Hg(II) ions in a sensitive and selective manner. • Application of the sensor to detect Hg(II) ions in fish samples." @default.
- W3174529897 created "2021-07-05" @default.
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- W3174529897 date "2021-11-01" @default.
- W3174529897 modified "2023-10-12" @default.
- W3174529897 title "A carbon-based fluorescent probe (N-CDs) encapsulated in a zeolite matrix (NaFZ) for ultrasensitive detection of Hg (II) in fish" @default.
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- W3174529897 doi "https://doi.org/10.1016/j.talanta.2021.122646" @default.
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