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DMF-mediated synthesis of N,S-co-doped carbon quantum dots and their fluorescence quenching mechanism toward Hg <sup>2+</sup> <i>via</i> surface complexation

Yongjian Pan, Shancai Guo, Teng Wang, Jianyuan Lin, Zhijian Jia, Fuhang Xu, Renyue Huang, Haili Wang, Chunjie Bai, Jianghua Chen

2026RSC Advances9 citationsDOIOpen Access PDF

Abstract

Nitrogen and sulfur co-doped carbon quantum dots (N,S-CQDs) were synthesized via a green, one-step hydrothermal method using waste lemon peel as the carbon source and glutathione (GSH) as the N,S dopant in a dimethylformamide (DMF) medium.

Topics & Concepts

Detection limitFluorescenceX-ray photoelectron spectroscopyQuenching (fluorescence)Quantum dotFourier transform infrared spectroscopyAnalytical Chemistry (journal)SulfurPhotochemistryChemistryCarbon fibersMaterials scienceSpectroscopyDopantReagentLinear rangeTransmission electron microscopyFluorescence spectroscopyNitrogenCarbon disulfideFluorophoreMercury (programming language)Inorganic chemistryInfrared spectroscopyNanomaterialsRaman spectroscopyQuantum yieldCarbon quantum dotsNanoprobeCarbon and Quantum Dots ApplicationsAdvanced Photocatalysis TechniquesNanocluster Synthesis and Applications
DMF-mediated synthesis of N,S-co-doped carbon quantum dots and their fluorescence quenching mechanism toward Hg <sup>2+</sup> <i>via</i> surface complexation | Litcius