κ-Carrageenan-derived carbon dots for highly selective and sensitive detection of Fe3+ and oxytetracycline

Wang, Yesheng; Liu, Yaoyang; Zhao, Li; Sun, Lili; Zhao, Xia; Xia, Yanzhi

doi:10.1007/s10853-020-05301-2

Cited by 42 publications

(14 citation statements)

References 52 publications

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“…Apart from the synthesis method, an appropriate carbon precursor should be considered. Many raw materials, including less harmful organic chemicals, solvents, or natural precursors, are used to produce CDs (Wang et al, 2021;Xu et al, 2022). Considering the natural or less harmful chemicals as a precursor for CDs synthesis, the use of amino acids is an option.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of highly fluorescent carbon dots as fluorescence sensors for the parallel detection of cadmium and mercury ions

Tan

Wang

et al. 2022

Front. Chem.

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Cadmium (Cd2+) and mercury ions (Hg2+) are essential for the quality control of food samples because of their serious toxicity to human health, but the effective and simple strategy for their parallel detection remains challenging. In this paper, a rapid and simple parallel detection method for Cd2+ and Hg2+ was developed using carbon dots (CDs) as fluorescent sensors. A one-step hydrothermal method with a single precursor l-arginine as both the carbon and nitrogen sources was employed to prepare nitrogen-doped CDs (N-CDs). N-CDs exhibited a uniform particle size and excitation-independent fluorescence emission. The maximum emission wavelength of N-CDs was observed at 354 nm with the excitation wavelength at 295 nm. The quantum yield of N-CDs reached as high as 71.6% in water. By using sodium diphosphate and phytic acid as masking agents, the fluorescent sensor can be quenched by Cd2+ and Hg2+ in the linear range of 0–26.8 μM and 0–49.9 μM within 5 min. Other common ions in farm products showed no significant effect on the fluorescence intensity of the sensing system. The results demonstrated that the sensing system had good selectivity and sensitivity for Cd2+ and Hg2+. The detection limits for Cd2+ and Hg2+ were 0.20 and 0.188 μM, respectively. In addition, the fluorescent sensor had been successfully applied for the detection of Cd2+ and Hg2+ in fruits and vegetables, and the recoveries were 86.44–109.40% and 86.62–115.32%, respectively. The proposed fluorescent sensor provides a rapid, simple, and sensitive detection method for Cd2+ and Hg2+ in food samples and thus a novel quantitative detection method for heavy metal ions in foods.

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Section: Introductionmentioning

confidence: 99%

One-step synthesis of highly fluorescent carbon dots as fluorescence sensors for the parallel detection of cadmium and mercury ions

Tan

Wang

et al. 2022

Front. Chem.

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“…The average particle size of GSH-CDs prepared was 2.8 ± 0.3 nm, and GSH-CDs aggregates with a size greater than 10 nm, so GSH-CDs detects Fe 3+ based on AIE mechanism. The CDs synthesized from mangosteen pulp, [82] κ-carrageenan, [83] and coffee bean [28] can also detected Fe 3+ based on AIE.…”

Section: Aggregation-induced Emissionmentioning

confidence: 99%

Application Progress of Green Carbon Dots in Analysis and Detection

Zuo

et al. 2022

Part & Part Syst Charact

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Green chemistry is currently attracting more and more attention due to its eco‐friendly, and green carbon dots (g‐CDs) are creating a research boom. The g‐CDs have huge application prospects in analysis and detection due to their excellent optical properties, high biocompatibility, and low toxicity compared to other fluorescent materials. Based on the study of g‐CDs, the optical properties, synthesis methods, surface modification methods, and sensing mechanisms of g‐CDs are outlined, and the application in analysis and detection of environmental, food, biomolecules, and other organic small molecules are reviewed. At the same time, the challenges faced by g‐CDs are outlined. This review provides valuable references for further research and wider application of g‐CDs.

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“…OTC can be competitively combined with Fe 3+ acted as a quencher of CDs, which lead to the release of CDs and the recovery of fluorescence . Zhao et al prepared CDs using κ-carrageenan as a precursor, the obtained CDs can be used for both Fe 3+ and OTC detection …”

Section: Introductionmentioning

confidence: 99%

“…24 Zhao et al prepared CDs using κ-carrageenan as a precursor, the obtained CDs can be used for both Fe 3+ and OTC detection. 25 However, the aforementioned single signal output based fluorescence probes have some limitations in practical applications, e.g., the temperature and concentration of probes significantly affected their sensing performance. 26 To overcome these shortcomings, ratiometric fluorescence probes have been developed which monitor two or more fluorescence signals.…”

Section: ■ Introductionmentioning

confidence: 99%

Carbon Dots and Eu³⁺ Hybrid-Based Ratiometric Fluorescent Probe for Oxytetracycline Detection

Wang

Yang

et al. 2022

Ind. Eng. Chem. Res.

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Overuse of oxytetracycline (OTC) in livestock farming can cause environmental water pollution, risking human health. It is essential to exploit efficient, fast, and sensitive measures to sense OTC in environmental water samples. In this study, a ratiometric fluorescence probe consisted of blue-fluorescent carbon dots (CDs) and Eu 3+ was constructed to detect OTC sensitively and selectively. Upon the addition of OTC, bright red fluorescence was generated due to the aggregation of Eu 3+ , and the intensity of blue fluorescence of CDs reduced because of the inner filter effect between OTC and CDs. Under 365 nm UV light irradiation, the increasing of OTC concentration from 0 to 10 μM resulted a transformation of probe solution fluorescence color from blue to pick. This CDs−Eu 3+ hybrid probe also performed a high selectivity for OTC with minimal interference containing various antibiotics, cations, and amino acids. Importantly, the probe demonstrated a low detection limit of 9.6 nM and a satisfactory recovery efficiency for OTC detection in river and tap water.

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κ-Carrageenan-derived carbon dots for highly selective and sensitive detection of Fe3+ and oxytetracycline

Cited by 42 publications

References 52 publications

One-step synthesis of highly fluorescent carbon dots as fluorescence sensors for the parallel detection of cadmium and mercury ions

One-step synthesis of highly fluorescent carbon dots as fluorescence sensors for the parallel detection of cadmium and mercury ions

Application Progress of Green Carbon Dots in Analysis and Detection

Carbon Dots and Eu³⁺ Hybrid-Based Ratiometric Fluorescent Probe for Oxytetracycline Detection

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κ-Carrageenan-derived carbon dots for highly selective and sensitive detection of Fe3+ and oxytetracycline

Cited by 42 publications

References 52 publications

One-step synthesis of highly fluorescent carbon dots as fluorescence sensors for the parallel detection of cadmium and mercury ions

One-step synthesis of highly fluorescent carbon dots as fluorescence sensors for the parallel detection of cadmium and mercury ions

Application Progress of Green Carbon Dots in Analysis and Detection

Carbon Dots and Eu3+ Hybrid-Based Ratiometric Fluorescent Probe for Oxytetracycline Detection

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Product

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Carbon Dots and Eu³⁺ Hybrid-Based Ratiometric Fluorescent Probe for Oxytetracycline Detection