Preparation of high quantum yield nitrogen and sulfur co-doped carbon dots for sensitive detection of Cu2

Nitrogen and sulfur co-doped green fluorescent carbon dots (G-CDs) with quantum yield (QY) of 28.26% were synthesized by hydrothermal method with p-phenylenediamine and thiosemicarbazone as precursors. The synthesized G-CDs exhibit good sensitivity and anti-interference ability for detecting copper...

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Bibliographic Details
Published in:Journal of nanophotonics 2024-01, Vol.18 (1), p.016011-016011
Main Authors: Wang, YingTe, Cheng, SiRong, Wu, RongRong, Zhang, YuanYuan, Wang, BoHan
Format: Article
Language:English
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Summary:Nitrogen and sulfur co-doped green fluorescent carbon dots (G-CDs) with quantum yield (QY) of 28.26% were synthesized by hydrothermal method with p-phenylenediamine and thiosemicarbazone as precursors. The synthesized G-CDs exhibit good sensitivity and anti-interference ability for detecting copper ion (Cu2+) by fluorescence quenching (λex=390  nm, λem=535  nm) with a linear range of 20 to 200  μM and the limit of detection of 4.8  μM. This analytical method has been applied to detect Cu2+ of the local lake with good accuracy and recovery.
ISSN:1934-2608
1934-2608
DOI:10.1117/1.JNP.18.016011