Poly(aniline-co-pyrrole) incorporated Ag@Ag2MoO4 nanocomposites: In situ synthesis and nanomolar detection of environmental pollutant 4-nitrophenol

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY Electrochimica Acta Pub Date : 2024-06-03 DOI:10.1016/j.electacta.2024.144531

Muthamizh Selvamani , Padmanaban Annamalai , Kholood A. Dahlous , Saikh Mohammad , Balachandran Subramanian , Arul Varman Kesavan

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Abstract

This study focuses on the electrochemical detection of 4-nitrophenol (4-NP) utilizing Ag@Ag₂MoO₄ microcubes, PANI-Ppy, and their nanohybrid. 4-NP is known for its environmental hazards and high toxicity, making its detection crucial. The synthesis of Ag@Ag₂MoO₄/PANI-Ppy is employs a microwave technique, followed by electrode fabrication using a drop-casting method. Structural, optical, morphological, and electrochemical characterizations were conducted to evaluate their efficacy for 4-NP detection. The modified electrode demonstrated a limit of detection (LOD) of 72 nM and a limit of quantification (LOQ) of 241.31 nM, with excellent selectivity against various interferences. Real water samples validated the modified electrode's viability, yielding positive recovery values. A comprehensive mechanism for the electrochemical detection of 4-NP is proposed.

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聚（苯胺-共吡咯）掺杂 Ag@Ag2MoO4 纳米复合材料：原位合成与环境污染物 4-硝基苯酚的纳摩尔检测

本研究的重点是利用 Ag@Ag2MoO4 微立方体、PANI-Ppy 及其纳米杂化物对 4-硝基苯酚（4-NP）进行电化学检测。众所周知，4-硝基苯酚具有环境危害和高毒性，因此对其进行检测至关重要。Ag@Ag2MoO4/PANI-Ppy 采用微波技术合成，然后用滴铸法制造电极。为了评估其在 4-NP 检测中的功效，对其进行了结构、光学、形态和电化学表征。改良电极的检出限（LOD）为 72 nM，定量限（LOQ）为 241.31 nM，对各种干扰具有良好的选择性。真实水样验证了改良电极的可行性，其回收率达到了正值。提出了一种全面的 4-NP 电化学检测机制。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.