One-pot synthesis of N, S co-doped photoluminescent carbon quantum dots for Hg<sup>2+</sup> ion detection

WEI Ju-meng; LIU Bi-tao; ZHANG Xin; SONG Chang-chun

doi:10.1016/S1872-5805(18)60343-9

Volume 33 Issue 4

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WEI Ju-meng, LIU Bi-tao, ZHANG Xin, SONG Chang-chun. One-pot synthesis of N, S co-doped photoluminescent carbon quantum dots for Hg2+ ion detection. New Carbon Mater., 2018, 33(4): 333-340. doi: 10.1016/S1872-5805(18)60343-9

Citation:

WEI Ju-meng, LIU Bi-tao, ZHANG Xin, SONG Chang-chun. One-pot synthesis of N, S co-doped photoluminescent carbon quantum dots for Hg²⁺ ion detection. New Carbon Mater., 2018, 33(4): 333-340. doi: 10.1016/S1872-5805(18)60343-9

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One-pot synthesis of N, S co-doped photoluminescent carbon quantum dots for Hg²⁺ ion detection

doi: 10.1016/S1872-5805(18)60343-9

1.
College of Chemistry and Materials Engineering, Anhui Science and Technology of University, Fengyang 233100, China;
2.
College of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China;
3.
College of Science, Xi'an University of Science and Technology, Xi'an 710054, China

Funds: Talent Introduction Foundation of Anhui Science and Technology of University (ZRC2014448); Key Discipline Foundation of Anhui Science and Technology of University (AKZDXK2015A01); Open Foundation of Chongqing Key Laboratory of Environmental & Remediation Technologies (CEK1502).

Received Date: 2018-04-02
Accepted Date: 2018-08-30
Rev Recd Date: 2018-06-06
Publish Date: 2018-08-28

Abstract

Abstract

N and S co-doped carbon quantum dots (N, S-CQDs) with a high fluorescence quantum yield (12.6%) were synthesized by a one-pot hydrothermal method. Results indicate that the N, S-CQDs have a small particle size and an amorphous structure, exhibiting unique surface states and excitation wavelength-independent fluorescent properties. Co-doping of N and S increases the electron-transfer rate and improves the coordination interaction between the N, S-CQDs and Hg²⁺ ions. The N, S-CQDs show a high sensitivity and selectivity in detecting Hg²⁺ ions even for a lake water sample. They are promising fluorescence probes for environmental monitoring.
- Carbon quantum dots,
- L-cysteine,
- Co-doped,
- Photoluminescent,
- Hg²⁺ ions detection

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References

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