Rapid colorimetric detection of mercury using silver nanoparticles in the presence of methionine

Balasurya, S.; Syed, Asad; Thomas, Ajith M.; Marraiki, Najat; Elgorban, Abdallah M.; Raju, Lija L.; Das, Arunava; Khan, S. Sudheer

doi:10.1016/j.saa.2019.117712

Cited by 54 publications

(20 citation statements)

References 31 publications

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“…The cell viability was determined by measuring the absorbance at 570 nm by a multidetection microplate reader. The following formula was used to calculate the inhibition of cell growth: …”

Section: Methodsmentioning

confidence: 99%

Self-Cascade Nanoenzyme of Cupric Oxide Nanoparticles (CuO NPs) Induced in Situ Catalysis Formation of Polyelectrolyte as Template for the Synthesis of Near-Infrared Fluorescent Silver Nanoclusters and the Application in Glutathione Detection and Bioimaging

Yan

Zhu

et al. 2022

Anal. Chem.

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In this work, near-infrared fluorescent silver nanoclusters (Ag NCs) were prepared based on the in situ formed poly methacrylic acid (PMAA) as the template and stabilizer, which is synthesized by methacrylic acid (MAA) and hydroxyl radical (·OH) that is generated by the cascade nanoenzyme reaction of cupric oxide nanoparticles (CuO NPs). CuO NPs possess the intrinsic glutathione-like (GPx-like) and peroxidase-like (POD-like) activities, which can catalyze glutathione (GSH) and O2 to produce hydrogen peroxide (H2O2), and then transform into ·OH. The fluorescence intensity of Ag NCs decreases with the addition of GSH, because the −SH can easily anchor on the surface, resulting in the PMAA leaving the Ag NCs, and the coeffect of GSH and PMAA results in the aggregation to form larger Ag NPs. A good linear relationship between the fluorescence quenching rate and the GSH concentration was found in the range 0.01–40 μM with the detection limit 8.0 nM. The Ag NCs can be applied in the detection of GSH in the serum, as well as bioimaging of endogenous and exogenous GSH in cells with high sensitivity. Moreover, the normal and cancer cells can be distinguished through bioimaging because of the different GSH levels. The new method for the preparation of biocompatible nanoprobe based on the nanozyme tandem catalysis and the in situ formed template can avoid the direct usage of polymers or protein templates that hinder preparation and separation, providing a reliable approach for the synthesis, biosensing, and bioimaging of nanoclusters.

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“…The cell viability was determined by measuring the absorbance at 570 nm by a multidetection microplate reader. The following formula was used to calculate the inhibition of cell growth: …”

Section: Methodsmentioning

confidence: 99%

Self-Cascade Nanoenzyme of Cupric Oxide Nanoparticles (CuO NPs) Induced in Situ Catalysis Formation of Polyelectrolyte as Template for the Synthesis of Near-Infrared Fluorescent Silver Nanoclusters and the Application in Glutathione Detection and Bioimaging

Yan

Zhu

et al. 2022

Anal. Chem.

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“…Proposed mechanism of Hg(II) sensing using AgNPs. In principle, there are three main mechanisms for the detection of Hg 2+ using AgNPs: (i) complexation and aggregation mechanism, 39,41 (ii) formation of Ag-Hg alloy 42 and (iii) redox reaction mechanism. 5,37,38 The latter is less discussed or considered in the literature.…”

Section: Analysis Of Hg 2+ In Real Water Samples Using the Proposed N...mentioning

confidence: 99%

A highly selective Hg²⁺ colorimetric sensor and antimicrobial agent based on green synthesized silver nanoparticles using Equisetum diffusum extract

Jabbar,

Abbas,

Assad

et al. 2023

RSC Adv.

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“…The limit of detection (LOD) of this Hg 2+ sensor, defined by a 3σ/slope, was calculated to be equal to 0.013 mg l −1 (64.9 nM), which is comparable to other nanoparticle-based sensors of mercury reported in the literature. [49][50][51][52].…”

Section: Application Of Agnps As Plasmon Sensorsmentioning

confidence: 99%

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

Zannotti

Vicomandi

Rossi

et al. 2020

Journal of Molecular Liquids

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Rapid colorimetric detection of mercury using silver nanoparticles in the presence of methionine

Cited by 54 publications

References 31 publications

Self-Cascade Nanoenzyme of Cupric Oxide Nanoparticles (CuO NPs) Induced in Situ Catalysis Formation of Polyelectrolyte as Template for the Synthesis of Near-Infrared Fluorescent Silver Nanoclusters and the Application in Glutathione Detection and Bioimaging

Self-Cascade Nanoenzyme of Cupric Oxide Nanoparticles (CuO NPs) Induced in Situ Catalysis Formation of Polyelectrolyte as Template for the Synthesis of Near-Infrared Fluorescent Silver Nanoclusters and the Application in Glutathione Detection and Bioimaging

A highly selective Hg²⁺ colorimetric sensor and antimicrobial agent based on green synthesized silver nanoparticles using Equisetum diffusum extract

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

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Rapid colorimetric detection of mercury using silver nanoparticles in the presence of methionine

Cited by 54 publications

References 31 publications

Self-Cascade Nanoenzyme of Cupric Oxide Nanoparticles (CuO NPs) Induced in Situ Catalysis Formation of Polyelectrolyte as Template for the Synthesis of Near-Infrared Fluorescent Silver Nanoclusters and the Application in Glutathione Detection and Bioimaging

Self-Cascade Nanoenzyme of Cupric Oxide Nanoparticles (CuO NPs) Induced in Situ Catalysis Formation of Polyelectrolyte as Template for the Synthesis of Near-Infrared Fluorescent Silver Nanoclusters and the Application in Glutathione Detection and Bioimaging

A highly selective Hg2+ colorimetric sensor and antimicrobial agent based on green synthesized silver nanoparticles using Equisetum diffusum extract

Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution

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A highly selective Hg²⁺ colorimetric sensor and antimicrobial agent based on green synthesized silver nanoparticles using Equisetum diffusum extract