High-performance AuPd/MWCNTs/Ni-ZIF-8 Nanocomposite: An advanced electrochemical sensing platform for chlorogenic acid detection

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2025-09-21 DOI:10.1016/j.electacta.2025.147433

Ying Zhou , Xinyan Ye , Jinai Bian , Guomei Zhang , Yan Zhang , Caihong Zhang , Shaomin Shuang , Hong Cui

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引用次数: 0

Abstract

As a potent antioxidant molecule, chlorogenic acid exhibits various physiological activities, and its detection is of great value. In this study, nickel-zinc-based zeolitic imidazolate framework (Ni-ZIF-8) was successfully prepared via a room-temperature stirring method. Au-Pd alloy was synthesized on the surface of multi-walled carbon nanotubes by an adsorption-reduction method (AuPd/MWCNTs), and the AuPd/MWCNTs/Ni-ZIF-8 composite was further synthesized under ultrasonic treatment. Using this composite as the substrate material, an electrochemical sensor for the detection of chlorogenic acid was constructed. By integrating the molecular recognition capability of Ni-ZIF-8, the highly conductive network of MWCNTs, and the synergistic catalytic effect of AuPd alloy nanoparticles, the fabricated sensor enabled efficient detection of CGA. The sensor exhibited excellent linear responses across a concentration spectrum of 0.1-1 μM and 1-30 μM, and a low detection limit (0.033 μM). AuPd/MWCNTs/Ni-ZIF-8/GCE also showed exceptional selectivity, reproducibility, and stability for the CGA detection, and was successfully applied to the analysis of real samples.

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高性能AuPd/MWCNTs/Ni-ZIF-8纳米复合材料：一种先进的绿原酸检测电化学传感平台

绿原酸作为一种有效的抗氧化分子，具有多种生理活性，其检测具有重要的应用价值。本研究通过室温搅拌法制备了镍锌基咪唑酸分子筛骨架（Ni-ZIF-8）。采用吸附还原法在多壁碳纳米管表面合成了Au-Pd合金（AuPd/MWCNTs），并在超声处理下进一步合成了AuPd/MWCNTs/Ni-ZIF-8复合材料。以该复合材料为衬底材料，构建了检测绿原酸的电化学传感器。通过整合Ni-ZIF-8的分子识别能力、MWCNTs的高导电性网络以及AuPd合金纳米颗粒的协同催化作用，该传感器实现了对CGA的高效检测。该传感器在0.1-1 μM和1-30 μM的浓度范围内具有良好的线性响应，且检测限低（0.033 μM）。AuPd/MWCNTs/Ni-ZIF-8/GCE在CGA检测中也表现出优异的选择性、重复性和稳定性，并成功应用于实际样品的分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.