Ultra-sensitive zinc cobaltate assembled on N-rich carbon nitride electrochemical sensor for the detection of paraquat in food samples

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-10-03 DOI:10.1016/j.jtice.2024.105779

Subburaj Srinithi , Naveen Karuppusamy , S.M. Chen , Sri Balaji Natarajan , Balakumar Vellaichamy , Ying Li , Hsiung-Lin Tu , Chih-Min Wang , Yeh-Fang Duann

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引用次数: 0

Abstract

Background

Paraquat (PQ) from agricultural waste cause contamination in water bodies, groundwater, soil, and foods has received increasing attention regarding health safety. On-site-based detection is much needed along with rapid results, selectivity and sensitivity, which can be achieved through an electrochemical-based sensor.

Methods

This work provides, an electrochemical sensor based on zinc cobaltite (ZnCo₂O₄) nanostructure strongly attracted through electrostatic interaction with the carbon nitride (C₃N₅; CN) nanosheets modified on a glassy carbon electrode (GCE) for the determination of paraquat (PQ). The strong immobilization of ZnCo₂O₄ over CN₂ on GCE synergistically shows excellent sensing of PQ due to high interfacial charge transfer effect.

Significant findings

In addition, the electrochemical studies were performed using CV and DPV analysis which exhibits a good limit of detection (7.6 nM) and sensitivity (0.201 µA cm^-2) towards PQ detection. Furthermore, the modified electrode was applied practically in real food samples for PQ detection with excellent recoveries.

Abstract Image

查看原文本刊更多论文

装配在富氮化碳上的超灵敏钴酸锌电化学传感器用于检测食品样品中的百草枯

背景农业废弃物中的百草枯（PQ）会对水体、地下水、土壤和食品造成污染，其健康安全问题日益受到关注。本研究提供了一种基于锌钴酸盐（ZnCo2O4）纳米结构的电化学传感器，该传感器通过静电作用与修饰在玻璃碳电极（GCE）上的氮化碳（C3N5；CN）纳米片强烈吸附，用于测定百草枯（PQ）。由于高界面电荷转移效应，ZnCo2O4 与 CN2 在 GCE 上的强固定协同作用显示了对百草枯的出色传感能力。此外，还使用 CV 和 DPV 分析进行了电化学研究，结果表明对百草枯的检测具有良好的检出限（7.6 nM）和灵敏度（0.201 µA cm-2）。此外，改性电极被实际应用于真实食品样品中的 PQ 检测，回收率极高。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.