A porous thiacalix[4]arene based metal-organic framework sensor combined with reduced graphene oxide and spherical graphite for highly sensitive electrochemical detection of caffeic acid

被引：1

作者：

Ma, Le ^{[1
]}

Yang, Jin ^{[1
]}

Ma, Jian-Fang ^{[1
]}

机构：

[1] Northeast Normal Univ, Dept Chem, Key Lab Polyoxometalate & Reticular Mat Chem, Minist Educ, Changchun 130024, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2025年 / 511卷

基金：

中国国家自然科学基金;

关键词：

Caffeic acid; Metal-organic framework; Thiacalix[4]arene; Conductive carbon materials; Composite; Electrochemical detection; CARBON;

D O I：

10.1016/j.cej.2025.161978

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Caffeic acid (CA), featuring antibacterial and antiviral activity, is extensively present in plants. Excessive intake of CA poses a carcinogenic risk to human body. Thus, sensitive and convenient detection of CA is of great importance for human health. Herein, a porous Zn(II) cluster-based metal-organic framework (MOF), namely, [Zn10(BPDC)8L(mu 3-OH)4]center dot 19MeOH center dot 30H2O center dot 10DMA (Zn-L-BPDC), was successfully prepared (H2BPDC = 4,4 ' biphenyldicarboxylic acid, L = thiacalix[4]arene-based ligand, MeOH = methanol and DMA = N,Ndimethylacetamide). Subsequently, the sample of Zn-L-BPDC was well combined with highly conductive reduced graphene oxide (RGO) and spherical graphite (SG) to produce the three-component Zn-L-BPDC/RGO/SG composite. Under the optimal condition, Zn-L-BPDC/RGO/SG-2@GCE (GCE = glassy carbon electrode) exhibited a nanomolar level limit of detection (LOD, 0.96 nM) for CA. Markedly, this sensor was used to evaluate the content of CA in different food samples (cherry, blueberry, grape and tomato) with satisfactory recoveries (99.33-102.19 %). The ultraviolet-visible (UV-Vis) spectrophotometry and high-performance liquid chromatography (HPLC) technique were further conducted to validate the accuracy of this sensor for CA determination. This work developed a three-component MOF sensor combined with RGO and SG for quantitative analysis of CA in food samples.

引用

页数：13

共 53 条

[1] New insight for simultaneous detection of methocarbamol and paracetamol in human serum samples based on poly(L-methionine)/graphene-graphene oxide nanocomposite [J].