Facile preparation of N, S co-doped carbon dots and their application to a novel off-on fluorescent probe for selective determination of Hg2+

Yin, Pengyuan; Yao, Guixiang; Zou, Tianru; A, Nan; Na, Pei; Yang, Wenrong; Wang, Hongbin; Tan, Wei

doi:10.1016/j.dyepig.2022.110668

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Cited by 9 publications

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“…The peaks at 161.9 and 163.7 eV in the S2p spectra [Fig. 3(e)] belong to S─H and C─S 26 . The results of XPS demonstrate that there are hydrophilic groups on the surface of the G-CDs, and the N, S elements are successfully doped into the G-CDs, which is consistent with the results of FT-IR.…”

Section: Resultssupporting

confidence: 82%

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

Wang,

Cheng,

et al. 2024

J. Nanophoton.

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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 (Cu 2þ ) by fluorescence quenching (λ ex ¼ 390 nm, λ em ¼ 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 Cu 2þ of the local lake with good accuracy and recovery.

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