In-situ formation of the adsorbent based on octadecylamine for the extraction of Ag+ ions from aqueous solutions and its determination by microinjection flame atomic absorption spectrometry

Zendehdel, Ali Asghar; Sorouraddin, Saeed Mohammad; Farajzadeh, Mir Ali

doi:10.1007/s44211-023-00399-1

Cited by 3 publications

References 45 publications

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Fluorescent “On‐Off‐On” Probe for Cascade Detection of Ag(I) and Ascorbic Acid Using Folic Acid Protected Copper Nanoclusters

Vegad,

Rana,

Ranjan Jali

et al. 2024

ChemNanoMat

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Folic acid (FA) protected copper nanoclusters (FA‐CuNCs, λex = 350 nm, λem = 445 nm) were synthesized and used as a fluorescent "on‐off‐on" probe for the cascade detection of Ag+ and ascorbic acid (AA). The fluorescence emission of FA‐CuNCs at 445 nm was quenched significantly by Ag+ due to the analyte‐induced aggregation followed by the formation of larger nanoparticles. However, when AA was added to the in‐situ generated Ag@FA‐CuNCs, the fluorescence emission of FA‐CuNCs was recovered at 445 nm because of the AA‐directed reduction of Ag+ to Ag0. The experimental conditions, such as pH, incubation time, and quencher Ag+ concentrations, were optimized to achieve improved sensitivity. The detection limit for Ag+ and AA was estimated as 37.1 nM and 0.27 µM with a linearity range of 2.49‐22 µM and 4.71‐81.53 µM, respectively. In real sample analysis, the recoveries of Ag+ ions in river water and AA in orange juice samples were found between 99‐93% and 97‐94% using the probes FA‐CuNCs and Ag@FA‐CuNCs, respectively. Overall, this work offers a viable method for the sequential detection of Ag+ and AA using FA‐CuNCs via a fluorescence “on‐off‐on” switch mechanism.

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Fluorescent “On‐Off‐On” Probe for Cascade Detection of Ag(I) and Ascorbic Acid Using Folic Acid Protected Copper Nanoclusters

Vegad,

Rana,

Ranjan Jali

et al. 2024

ChemNanoMat

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Cysteine‐Functionalized Ti₃C₂ MXene Quantum Dots as Fluorescent Sensors for the Detection of Ag⁺

Liu,

Qiu,

et al. 2024

ChemistrySelect

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MXene quantum dots (MQDs), an emerging zero‐dimensional nanomaterial, have garnered significant attention from researchers due to their distinctive physical and chemical properties. In this study, cysteine‐functionalized Ti3C2 MQDs were synthesized using a facile hydrothermal methods, resulting in the functionalized Ti3C2 MQDs exhibiting intense blue fluorescence attributed to size‐dependent effects and surface defects. Furthermore, the cysteine‐functionalized Ti3C2 MQDs exhibit excitation wavelength‐dependent emission behavior and serve as a highly sensitive fluorescent probe for Ag+ detection with an impressive low limit of detection (LOD) of 0.015 μM. Moreover, they demonstrate exceptional sensitivity and selectivity in determining Ag+. This study presents a novel approach for the detection of Ag+ and highlights the immense potential of cysteine‐functionalized Ti3C2 MQDs in environmental applications.

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Aggregation Induced Emission Effect of Gold Nanoclusters for Rapid Detection of Silver Ions

Tang,

Hu,

Fang

et al. 2025

Preprint

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In-situ formation of the adsorbent based on octadecylamine for the extraction of Ag+ ions from aqueous solutions and its determination by microinjection flame atomic absorption spectrometry

Cited by 3 publications

References 45 publications

Fluorescent “On‐Off‐On” Probe for Cascade Detection of Ag(I) and Ascorbic Acid Using Folic Acid Protected Copper Nanoclusters

Fluorescent “On‐Off‐On” Probe for Cascade Detection of Ag(I) and Ascorbic Acid Using Folic Acid Protected Copper Nanoclusters

Cysteine‐Functionalized Ti₃C₂ MXene Quantum Dots as Fluorescent Sensors for the Detection of Ag⁺

Aggregation Induced Emission Effect of Gold Nanoclusters for Rapid Detection of Silver Ions

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In-situ formation of the adsorbent based on octadecylamine for the extraction of Ag+ ions from aqueous solutions and its determination by microinjection flame atomic absorption spectrometry

Cited by 3 publications

References 45 publications

Fluorescent “On‐Off‐On” Probe for Cascade Detection of Ag(I) and Ascorbic Acid Using Folic Acid Protected Copper Nanoclusters

Fluorescent “On‐Off‐On” Probe for Cascade Detection of Ag(I) and Ascorbic Acid Using Folic Acid Protected Copper Nanoclusters

Cysteine‐Functionalized Ti3C2 MXene Quantum Dots as Fluorescent Sensors for the Detection of Ag+

Aggregation Induced Emission Effect of Gold Nanoclusters for Rapid Detection of Silver Ions

Contact Info

Product

Resources

About

Cysteine‐Functionalized Ti₃C₂ MXene Quantum Dots as Fluorescent Sensors for the Detection of Ag⁺