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MXenes functionalized silver metal organic frameworks for highly selective electrochemical detection of As (III)
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DOI：10.1007/s10800-026-02466-7.png)
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Abstract
En 中文
Arsenic adulteration is a silent menace lurking in surface and ground water, exclusively in regions with industrial and geological characteristics conducive to arsenic leaching. It threatens communities with long term adversities thus demands precise and effective monitoring. To mitigate this persuasive problem, in this study, Ag-MOFs@MXenes modified electrochemical sensing platform was designed. The respective materials were synthesized by solvo-thermal method and characterized by FTIR, Raman spectroscopy, XRD and SEM-EDX for structural and morphological analysis. The results demonstrated successful synthesis of Ag-MOFs@MXenes heterostructures well within nano-dimensions. Cyclic voltammetry analysis revealed that MXenes improve the charge transfer rate with enhanced electrochemical response when coupled with Ag-MOFs. Ag-MOFs@7%MXenes modified electrode exhibited substantial current response to As (III) with high sensitivity i.e. 2.390 & micro;A ppb(-1) and detection limit 1.92 ppb (S/N = 3) across wide dynamic linear range of 0.1-100 ppb. The sensor has shown superior selectivity towards As (III) ions, ensuring the precise and reliable performance under diverse conditions. Moreover, the exceptional stability with 78% current retention for over 4.7 months has emphasized its long-term usability and robustness.
Keywords:
Arsenic
Electrochemical sensing
Ag- MOFs
MXenes
Ionic interference
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3
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963
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