One-Step Synthesis of the Nitrogen and Sulfur Codoped Carbon Dots for Detection of Lead and Copper Ions in Aqueous Solution
Joint Authors
Ma, Chaoqun
Zhu, Chun
Gao, Hui
Pang, Yuqian
Gu, Jiao
Wu, Yamin
Chen, Guoqing
Li, Lei
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-25
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Herein, by using the green and cheap L-cysteine as the precursor, nitrogen and sulfur codoped carbon dots (NS-CDs) were synthesized via a facile one-step hydrothermal method.
The obtained NS-CDs showed the relatively narrow size distributions (2.1~3.9 nm) with the lattice spacing of 0.29 nm, as well as the excitation-dependent photoluminescence (PL) emission activity with the quantum yield (QY) of 18%.
More interestingly, the PL intensity of NS-CDs was quenched by the addition of copper or lead ions (Cu2+ or Pb2+), which was shown in the tradition detection method by PL spectra.
The NS-CDs exhibited ultrasensitive colorimetric sensing capability for both Cu2+ and Pb2+ by the color variance using naked eyes without any further treating.
Two different coupling ways for detecting Pb2+ and Cu2+ were induced by the analysis of the Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS).
And the as-prepared NS-CDs showed their potential application in the heavy metal ions detection for the wastewater determination.
American Psychological Association (APA)
Gao, Hui& Pang, Yuqian& Li, Lei& Zhu, Chun& Ma, Chaoqun& Gu, Jiao…[et al.]. 2020. One-Step Synthesis of the Nitrogen and Sulfur Codoped Carbon Dots for Detection of Lead and Copper Ions in Aqueous Solution. Journal of Sensors،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1190599
Modern Language Association (MLA)
Gao, Hui…[et al.]. One-Step Synthesis of the Nitrogen and Sulfur Codoped Carbon Dots for Detection of Lead and Copper Ions in Aqueous Solution. Journal of Sensors No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1190599
American Medical Association (AMA)
Gao, Hui& Pang, Yuqian& Li, Lei& Zhu, Chun& Ma, Chaoqun& Gu, Jiao…[et al.]. One-Step Synthesis of the Nitrogen and Sulfur Codoped Carbon Dots for Detection of Lead and Copper Ions in Aqueous Solution. Journal of Sensors. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1190599
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1190599