Green synthesis of cow milk-derived carbon quantum dots and application for Fe3+ detection

Zhang, Lei; Li, Bo; Zhou, Yue; Yan, Wei; Le, Tao; Sun, Qi

doi:10.1007/s10971-022-06024-3

Cited by 14 publications

(9 citation statements)

References 33 publications

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“…Interestingly, the emission peak of simple CMCQDs is at 440 nm in our previous study (Zhang et al, 2023). After doped with P in this work, the P-CMCQDs have two emission peaks at around 440 and 520 nm, and AuNPs also have a characteristic absorption peak at around UV 520 nm (Figure 6a).…”

Section: Detection Mechanism Of P-cmcqds For Au 3+supporting

confidence: 55%

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au³⁺

Zhang

Zhou

et al. 2023

J Food Process Engineering

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A new fluorescent probe based on phosphorus-doped cow milk-derived carbon quantum dots (P-CMCQDs) for the detection of Au 3+ was studied in water samples. P-CMCQDs were prepared by hydrothermal method with cow milk as carbon source and phosphoric acid as dopant. P-CMCQDs show green fluorescence under ultraviolet light and can be partially quenched by Au 3+ . However, the excellent fluorescence characteristics of P-CMCQDs-ascorbic acid (AA) were obtained and can be used to detect trace Au 3+ by simply mixing the P-CMCQDs with AA. The sensing mechanism is based on the reduction of Au 3+ to AuNPs by P-CMCQDs and AA, and then AuNPs induce the fluorescence quenching of P-CMCQDs through synergistic static quenching and internal filtering effect. The fluorescence intensity of P-CMCQDs-AA varies with the concentration of Au 3+ (10-140 μmol/L), the detection limit is 4.2 nmol/L, indicating that the P-CMCQD S -AA probe has excellent sensitivity. In the detection of Au 3+ in tap water and lake water, it is found that the recovery is between 99.6% and 100.5%, and the relative standard deviation is between 1.7% and 3.2%. This method is fast, efficient, and sensitive, and can be used to detect Au 3+ in actual water samples. Practical ApplicationsAlthough the element gold is chemically inert, soluble gold salts remaining in the environment in the form of ions are toxic and serious damage the peripheral nervous system, causing other health issues. Therefore, it seems necessary to design an efficient and sensitive method to detect Au 3+ in environment. Among many detection methods, fluorescence sensing method is more suitable for on-site, rapid detection.However, the complex system, high limit of detection and environmental pollution caused by metal luminescence limit its application. In this paper, the biomass P-CMCQDs was synthesized from cow milk by hydrothermal method. By adding AA in the synthesized P-CMCQDs, the limit of detection (LOD) was greatly improved, and the trace Au 3+ detection in tap water and lake water was highly selective and sensitive.

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Section: Detection Mechanism Of P-cmcqds For Au 3+supporting

confidence: 55%

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au³⁺

Zhang

Zhou

et al. 2023

J Food Process Engineering

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“…This was further confirmed by the zeta potential measurements of the CM-CDs in DI water. Further, XPS was utilized to investigate the oxidation state and chemical environment of CM-CDs. , The XPS survey scan revealed distinctive peaks at binding energy levels of 286.12 400.3, and 532.75 eV, corresponding to the C 1s, N 1s, and O 1s orbitals, respectively (Figure (A)). The multiplex scan of C 1s exhibited four distinct peaks at 284.05, 285.25, 287.19, and 292 eV, representing the CC, C–N/C–C, C–O, and CO/CN bonds, respectively (Figure (B)).…”

Section: Resultsmentioning

confidence: 99%

“…Further, XPS was utilized to investigate the oxidation state and chemical environment of CM-CDs. 65,66 The XPS survey scan revealed distinctive peaks at binding energy levels of 286.12 400.3, and 532. CDs, including their size, chemical environment, and surface functionalities indicate their potential suitability for various applications.…”

Section: Characterization Of Cm-cdsmentioning

confidence: 99%

Facile Synthesis of Multifunctional Carbon Dots Derived from Camel Milk for Mn⁷⁺ Sensing and Antiamyloid and Anticancer Activities

Kumar,

Vincy,

Rani

et al. 2023

ACS Omega

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Carbon dots (CDs) are promising biocompatible fluorescent nanoparticles mainly used in bioimaging, drug delivery, sensing, therapeutics, and various other applications. The utilization of natural sources and green synthetic approaches is resulting in highly biocompatible and nontoxic nanoparticles. Herein, we report an unprecedented facile and green synthesis of highly luminescent carbon dots derived from camel milk (CM) for sensing manganese (Mn7+) ions and for identifying the anticancer potential and antiamyloid activity against α-synuclein amyloids. α-Synuclein amyloid formation due to protein misfolding (genetic and environmental factors) has gained significant attention due to its association with Parkinson’s disease and other synucleinopathies. The as-synthesized CM-CDs possess an average hydrodynamic diameter ranging from 3 to 15 nm and also exhibit strong photoluminescence (PL) emission in the blue region. The CM-CDs possess good water dispersibility, stable fluorescence under different physical states, and outstanding photostability. Moreover, the CM-CDs are validated as an efficient sensor for the detection of Mn7+ ions in DI water and in metal ion-polluted tap water. In addition, the CM-CDs have demonstrated a very good quantum yield (QY) of 24.6% and a limit of detection (LOD) of 0.58 μM for Mn7+ ions with no incubation time. Consequently, the exceptional properties of CM-CDs make them highly suitable for a diverse array of biomedical applications.

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“…Moreover, a linear dependence was also observed in some animal-derived doped CDs, 127,139,180 which is crucial for pH sensor application. The pH-dependent PL features of doped CDs derived from various animal/human sources such as egg white, 133 Bombyx mori silk, 138 cocoon silk, 139 spider silk, 142 roasted duck, 156 bee pollen, 172 prawn shell, 174 crayfish shell, 185–187 mussel seafood, 188 cow milk, 191,199 hen feathers, 207 pig skin collagen, 211 pigeon manure, 221 fish scales, 223,227 carp roe, 233 human hair, 239,240 human urine, 245 and human fingernails 247 were often explained by the protonation–deprotonation of the functional groups present on their surface. The protonation–deprotonation mechanism of doped CDs under different pH conditions were also endorsed by the changes in their zeta potential.…”

Section: Physiochemical Properties Of Animal/human Biomass-derived Cdsmentioning

confidence: 99%

“…172 Recently, cow milk-derived N-CDs were also applied for the sensitive and selective detection of Fe 3+ via a non-radiative ET process with a satisfactory LOD (0.6 μM). 199…”

Section: Applications Of Animal/human Biomass-derived Cdsmentioning

confidence: 99%

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

Dubey

2023

RSC Adv.

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Green synthesis of cow milk-derived carbon quantum dots and application for Fe3+ detection

Cited by 14 publications

References 33 publications

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au³⁺

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au³⁺

Facile Synthesis of Multifunctional Carbon Dots Derived from Camel Milk for Mn⁷⁺ Sensing and Antiamyloid and Anticancer Activities

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

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Green synthesis of cow milk-derived carbon quantum dots and application for Fe3+ detection

Cited by 14 publications

References 33 publications

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au3+

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au3+

Facile Synthesis of Multifunctional Carbon Dots Derived from Camel Milk for Mn7+ Sensing and Antiamyloid and Anticancer Activities

An overview on animal/human biomass-derived carbon dots for optical sensing and bioimaging applications

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Product

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Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au³⁺

Preparation of phosphorus‐doped cow milk‐derived carbon quantum dots and detection of Au³⁺

Facile Synthesis of Multifunctional Carbon Dots Derived from Camel Milk for Mn⁷⁺ Sensing and Antiamyloid and Anticancer Activities