4.7 Article

CeO2 quantum dots for highly selective and ultrasensitive fluorescence detection of 4-nitrophenol via the fluorescence resonance energy transfer mechanism

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2021.120115

Keywords

CeO2; Quantum dots; Fluorescent detection; 4-Nitrophenol; FRET

Categories

Funding

  1. Program for Public Welfare Technology of Zhejiang Province [LGF20B050001]
  2. Natural Science Foundation of Zhejiang Province [LY20B050009]
  3. Program for Science and Technology of Jiaxing City [2018AY11002]

Ask authors/readers for more resources

A rapid and simple fluorescence probe based on CeO2 quantum dots was developed for highly selective and ultrasensitive direct determination of 4-nitrophenol. The probe exhibited a broad linear response to 4-NP concentration and low detection limit, and was successfully applied in real water samples with spiked recoveries ranging from 98.2% to 102.4%.
A rapid and simple fluorescence probe based on CeO2 quantum dots (QDs) was developed for highly selective and ultrasensitive direct determination of 4-nitrophenol (4-NP). CeO2 QDs were prepared using the sol-gel method with the precursor of Ce(NO3)(3)center dot 6H(2)O as a cerium source. The products were characterized through high-resolution electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy. The fluorescent probe based on CeO2 QDs exhibited a broad linear response to the concentration of 4-NP in the range of 0.005-75.00 mu M and provided a low detection limit of 1.50 nM. The fluorescence of CeO2 QDs was quenched by 4-NP through the fluorescence resonance energy transfer mechanism owing to the well overlaps between the fluorescence emission spectrum of CeO2 QDs with the ultraviolet absorption spectrum of 4-NP. This result was confirmed by the timeresolved fluorescence spectra and the evaluation of the interaction distance between CeO2 QDs and 4-NP. The prepared CeO2 QDs are successfully applied to the determination of 4-NP in real water samples, where the spiked recoveries range from 98.2% to 102.4%. (C) 2021 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available