摘要
实验采用溶剂热法将硝酸铜(Cu(NO3)2)、1,3,5-苯三甲酸(H3BTC)和2,3,6,7,10,11-六羟基三苯(HHTP)合成金属双配体有机骨架,并将其负载于多壁碳纳米管(MWCNT)上,制备一种具有优异导电性能的新型复合材料Cu-BTC-HHTP/MWCNT。通过扫描电镜、X射线衍射和傅里叶红外光谱表征其形貌及结构;利用新型复合材料修饰玻碳电极(GCE)构建电化学传感器Cu-BTC-HHTP/MWCNT/GCE,运用循环伏安法探究具有最佳检测性能电化学传感器的构建条件,并优化了电解质的选择、检测体系pH、累积电位、累积时间等检测条件。结果表明,最佳工作条件下,在双酚A(BPA)、双酚S(BPS)浓度为5~400μmol/L区间,传感器响应的峰电流与浓度呈线性关系,决定系数R2分别为0.997、0.998,检出限分别为76.4、18.5 nmol/L。对实际样品的检测中,BPA、BPS的加标平均回收率分别为96.63%~103.69%、98.29%~101.18%。表明新构建的Cu-BTC-HHTP/MWCNT/GCE电化学传感器可为研究食品接触材料中BPA、BPS等污染物迁移量的检测提供新的技术支持。
This study reported the synthesis of a novel composite material,Cu-BTC-HHTP/MWCNT.The material was synthesized via a solvothermal method using copper nitrate(Cu(NO3)2),1,3,5-benzenetricarboxylic acid(H3BTC),and 2,3,6,7,10,11-hexahydroxytriphenylene(HHTP)as dual-ligand metal-organic frameworks,which were incorporated into multi-walled carbon nanotubes(MWCNT)to create a composite with superior electrical conductivity.The material was characterized by scanning electron microscopy,X-ray diffraction,and Fourier transform infrared spectroscopy.A glassy carbon electrode(GCE)was modified with the Cu-BTC-HHTP/MWCNT composite to develop an electrochemical sensor,referred to as Cu-BTC-HHTP/MWCNT/GCE.Cyclic voltammetry was used to optimize the construction conditions of the sensor,including the choice of electrolyte,system pH,accumulation potential,and accumulation time.Under optimal conditions,the sensor exhibited a linear relationship between peak current response and bisphenol A(BPA)and bisphenol S(BPS)concentrations in the range of 5 to 400μmol/L,with coefficient of determination(R2)of 0.997 for BPA and 0.998 for BPS.The detection limits were 76.4 nmol/L for BPA and 18.5 nmol/L for BPS.In real sample testing,the method demonstrated excellent recovery rates,ranging from 96.63%to 103.69%for BPA and from 98.29%to 101.18%for BPS.These results indicate that the Cu-BTC-HHTP/MWCNT/GCE sensor provides a robust platform for the detection of BPA and BPS migration from food-contact materials,providing a reliable analytical tool for investigating the migration of these contaminants.
作者
林谦
林根龄
代莉莉
黄迪惠
黄小洲
LIN Qian;LIN Genling;DAI Lili;HUANG Dihui;HUANG Xiaozhou(Food Flexible Packaging Technology Fujian University Engineering Research Center,Fujian Polytechnic Normal University,Fuqing 350300,China;Wuhan University,Core Facility,Wuhan 430072,China;Fujian Province-Indonesia Marine Food Joint Research and Development Center,Fujian Polytechnic Normal University,Fuqing 350300,China;Fujian Provincial Key Lab of Coastal Basin Environment,Fuqing 350300,China)
出处
《食品工业科技》
北大核心
2025年第13期251-259,共9页
Science and Technology of Food Industry
基金
福建省科技厅自然科学基金(2020J01310,2022J01977)
福建省中青年教师教育科研项目(JAT241083)
福建省高校重点实验室开放课题(S1-KF2014)。
关键词
双配体金属有机骨架
多壁碳纳米管
电化学传感器
双酚A
双酚S
同时检测
dual-ligand metal-organic framework
multi-walled carbon nanotubes
electrochemical sensors
bisphenol A
bisphenol S
simultaneous detection
