One-Pot Hydrothermal Synthesis of N-Doped Carbon Quantum Dots Using the Shrimp Powder for Highly Sensitive and Rapid Detection of Fe3+

Yun Wang; Chun Xing Li; Xiao Xi Hu; Feng Wen; Ai Wen Yu; Hua Qiu; Jun Yao Shen

doi:10.4028/p-Ub5MwG

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 440One-Pot Hydrothermal Synthesis of N-Doped Carbon...

One-Pot Hydrothermal Synthesis of N-Doped Carbon Quantum Dots Using the Shrimp Powder for Highly Sensitive and Rapid Detection of Fe³⁺

Abstract:

A cost-effective and straightforward hydrothermal approach was utilized to fabricate fluorescent nitrogen-modified carbon quantum dots (N-CQDs) from shrimp powder. The N-CQDs produced possessed a mean diameter of 5 nm and demonstrated intense emission at 420 nm when optimally excited at 350 nm. Additionally, N-CQDs displayed robust blue luminescence when exposed to UV light (λ= 365 nm). Their potential as fluorescence probes for detecting Fe³⁺ was investigated further. Compared to other metallic ions, N-CQDs demonstrated exceptional selectivity and sensitivity towards Fe³⁺. Moreover, N-CQDs exhibited stable and concentration-dependent fluorescent intensities with Fe³⁺ concentrations spanning between 10 to 140 µM, with a minimum detectable concentration of 1.42 μM.

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Periodical:

Defect and Diffusion Forum (Volume 440)

Pages:

71-76

DOI:

https://doi.org/10.4028/p-Ub5MwG

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Online since:

March 2025

Authors:

Yun Wang, Chun Xing Li, Xiao Xi Hu*, Feng Wen, Ai Wen Yu, Hua Qiu, Jun Yao Shen

Keywords:

Fe³⁺ Detection, Fluorescent Probe, Nitrogen-Doped Carbon Quantum Dots, Shrimp Powder

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