A Effectively Sensing Composite Derived From AgNPs and Cu (II)-PMo12-Based Complex: Electrochemical Detection for Hg2+ and Epicatechin

IF 4.3 2区化学 Q2 CHEMISTRY, APPLIED

Applied Organometallic Chemistry Pub Date : 2026-07-23 DOI:10.1002/aoc.70628

Lian Yang, Jinlong Liu, Guocheng Liu, Na Xu, Zhong Zhang, Xiuli Wang

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Abstract

The detection of mercury ion in soil and active biomolecule in food is of great significance. In this study, a new polyoxometalate-based supramolecular framework derived from electrochemical active PMo₁₂O₄₀³⁻ and Cu-pp subunits {[Cu (pp)₂] [Cu (pp)₂](PMo₁₂O₄₀)(HPMo₁₂O₄₀)][Cu (pp)₂(CH₃O)]}·(CH₃OH)(H₂O)₂ (1) [pyridine pyrazole (pp)] was obtained by CH₃OH-H₂O mixed solvothermal. Utilizing the reducing action of NaBH₄, silver nanoparticles (AgNPs) were modified on the surface of the title compound 1 to generate an effective electrochemical sensing composite material (AgNPs@1). Single crystal X-ray diffraction, elemental analysis (EA), infrared (IR) spectroscopy, X-ray powder diffraction (PXRD), electrochemical impedance spectroscopy (EIS), and X-ray photoelectron spectroscopy (XPS) were used for the corresponding characterization of the above materials. AgNPs@1-modified carbon paste electrode (AgNPs@1-CPE) was fabricated and used for the detection of Hg²⁺ and epicatechin (EC) in H₂SO₄/Na₂SO₄ electrolyte system with robust anti-interference capabilities, stability, and low detection limit (20 nM for Hg²⁺ and 84 nM for EC). The practical application of the corresponding detection was explored for the river mud and tea drinks.

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基于AgNPs和Cu (II)- pmo12的有效传感复合物：Hg2+和表儿茶素的电化学检测

土壤中汞离子和食品中活性生物分子的检测具有重要意义。在本研究中，通过CH3OH-H2O混合溶剂热法制备了一种由电化学活性PMo12O403−和Cu-pp亚基{[Cu (pp)2] [Cu (pp)2](PMo12O40)(HPMo12O40)][Cu (pp)2(ch30)]}·（CH3OH）（H2O）2(1)[吡啶吡唑（pp）]组成的新型多金属氧酸盐超分子骨架。利用NaBH4的还原作用，将银纳米粒子（AgNPs）修饰在标题化合物1的表面，生成有效的电化学传感复合材料（AgNPs@1）。采用单晶x射线衍射、元素分析（EA）、红外（IR）、x射线粉末衍射（PXRD）、电化学阻抗谱（EIS）和x射线光电子能谱（XPS）对上述材料进行了相应的表征。制备了AgNPs@1-modified碳糊电极（AgNPs@1-CPE），用于H2SO4/Na2SO4电解质体系中Hg2+和表茶素（EC）的检测，具有抗干扰能力强、稳定性好、检测限低（Hg2+为20 nM， EC为84 nM）的特点。探讨了相应检测方法在河泥和茶饮料中的实际应用。

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来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.