MOF-derived BC-Co@NC nanoarchitectures coupled with FS-DVC algorithm for resolving overlapping voltammetric signals of catechol/hydroquinone isomers

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2025-08-12 DOI:10.1016/j.electacta.2025.147136

Xiangrong Zeng , Hongyu Xiao , Yaxuan Lei , Sifei Ye , Peng Liu , Zhuohua Kong , Yangping Wen , Guixia Tan , Xia Gong , Mingfang Li

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引用次数: 0

Abstract

The simultaneous electrochemical detection of catechol (CC) and hydroquinone (HQ) isomers is hindered by overlapping voltammetric signals, creating a persistent sensitivity-selectivity-accuracy paradox. Herein, we present a synergistic sensing platform integrating BC-Co@NC nanoarchitectures (engineered via topotactic carbonization to form 3D hierarchical pores with atomically dispersed Co-N₄ sites) and a first- and second-derivative voltammetry cascade (FS-DVC) optimized by Savitzky-Golay algorithm. This dual-engine strategy achieves 152 mV interpeak separation, ultra-low limits of detection (0.09 nM for CC, 0.12 nM for HQ), a linear range spanning four orders of magnitude (0.3-500 μM), and robust performance in environmental matrices (95.2-99.1% recoveries in agricultural water/soil). This work establishes a new paradigm for electrochemical isomer discrimination through the synergistic fusion of tailored material design and advanced signal mathematics.

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mof衍生的BC-Co@NC纳米结构与FS-DVC算法耦合用于分辨儿茶酚/对苯二酚异构体的重叠伏安信号

儿茶酚（CC）和对苯二酚（HQ）异构体的同时电化学检测受到重叠伏安信号的阻碍，造成了持续的灵敏度-选择性-准确性悖论。在此，我们提出了一个协同传感平台，集成了BC-Co@NC纳米结构（通过拓扑碳化形成具有原子分散的Co-N4位点的三维分层孔）和由Savitzky-Golay算法优化的一阶和二阶导数伏安级联（FS-DVC）。该双引擎策略可实现152 mV峰间分离，超低检测限（CC为0.09 nM， HQ为0.12 nM），线性范围为4个数量级（0.3-500 μM），在环境基质中具有良好的性能（农业水/土壤中回收率为95.2-99.1%）。这项工作通过定制材料设计和先进信号数学的协同融合建立了电化学异构体识别的新范式。

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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.