Electrochemiluminescence sensor for specific recognition of melamine: double luminescence cooperative amplification strategy of self-supporting material ZnNi2O2 and Ru(bpy)32+@HNTs

IF 4.9 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchemical Journal Pub Date : 2025-09-04 DOI:10.1016/j.microc.2025.115125

Ruidan Li, Li Tian, Yujia Song, Yanjia Guo, Guangping Ma, Pengfei Han, Hanyue Jiang, Wenzhuo Wang, Juan Lu

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引用次数: 0

Abstract

A self-supporting material of ZnNi₂O₂ was synthesized and halloysite nanotubes (HNTs) served as carriers for Ru(bpy)₃²⁺, enhancing stability of the sensor and improving the electrochemiluminescence (ECL) value in this experiment. The ECL sensor for specific recognition of melamine (MEL) was developed based on ZnNi₂O₂ and Ru(bpy)₃²⁺@HNTs as dual ECL reagents. The maximum initial signal was obtained in the presence of co-reactant tripropylamine (TPrA) through the synergy of ZnNi₂O₂ and Ru(bpy)₃²⁺@HNTs. A molecularly imprinted polymer (MIP) containing specific recognition sites for MEL was to enable selective recognition, with pyrrole serving as the functional monomer and MEL as the template molecule. The quenching effect was observed as the concentration of MEL increased. Under optimal conditions, the sensor demonstrated the linear correlation between the change of ECL signal and the logarithm of MEL concentration from the range of 1.0 × 10⁻¹² to 1.0 × 10⁻⁷ mol·L⁻¹. Satisfactory results were obtained for the detection of MEL in milk powder.

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三聚氰胺特异性识别电化学发光传感器：自支撑材料ZnNi2O2和Ru(bpy)32+@HNTs双发光协同放大策略

本实验合成了一种ZnNi2O2自支撑材料，并用高岭土纳米管（HNTs）作为Ru(bpy)32+的载体，增强了传感器的稳定性，提高了电化学发光（ECL）值。以ZnNi2O2和Ru(bpy)32+@HNTs为双ECL试剂，研制了三聚氰胺（MEL）特异性识别ECL传感器。ZnNi2O2和Ru(bpy)32+@HNTs的协同作用在共反应物三丙胺（TPrA）存在下获得了最大的初始信号。一种含有MEL特异性识别位点的分子印迹聚合物（MIP）以吡咯为功能单体，MEL为模板分子，实现了MEL的选择性识别。随着MEL浓度的增加，可以观察到淬火效应。在最佳条件下，传感器显示出ECL信号的变化与MEL浓度的对数在1.0 × 10−12 ~ 1.0 × 10−7 mol·L−1范围内呈线性相关。对奶粉中MEL的检测结果满意。

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来源期刊

Microchemical Journal 化学-分析化学

CiteScore

8.70

自引率

8.30%

发文量

1131

审稿时长

1.9 months

期刊介绍： The Microchemical Journal is a peer reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Microchemical Journal publishes articles which are at the forefront of modern analytical chemistry and cover innovations in the techniques to the finest possible limits. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry and titrimetry as well as established instrumentation methods such as flame and graphite furnace atomic absorption spectrometry, gas chromatography, and modified glassy or carbon electrode electrochemical methods will be considered, provided they show significant improvements and novelty compared to the established methods.