文献类型：期刊文献

英文题名：Heavy Metal Ion Detection by Carbonized Metal-Organic-Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors

作者：Wang, Wei[1,2];Zhao, Peiting[3];Wang, Chenjie[3];Xu, Aixuan[4,5];Ma, Wei[3];Wang, Gan[3];Han, Zehua[3];Lu, Yishan[4,5];Yan, Jin[1];Peng, Ran[3]

机构：[1]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Coll Naval Architecture & Shipping, Zhanjiang 524088, Peoples R China;[3]Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China;[4]Guangdong Ocean Univ, Fisheries Coll, Zhanjiang 524088, Peoples R China;[5]Guangdong Ocean Univ, Coll Fisheries, Guangdong Prov Key Lab Aquat Anim Dis Control & Hl, Zhanjiang 524088, Peoples R China

年份：2026

卷号：14

期号：2

外文期刊名：CHEMOSENSORS

收录：SCI-EXPANDED(收录号：WOS:001699900100001)、、EI(收录号：20260920179021)、WOS

基金：This research was funded by Open Fund of Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching (Grant NO. 2023B1212030003), the National Natural Science Foundation of China (52273243, 52101395), and China Postdoctoral Science Foundation (2022MS720621).

语种：英文

外文关键词：SPE electrochemical sensor; heavy metal ion detection; metal-organic framework; square wave anodic stripping voltammetry

外文摘要：Efficient detection of heavy metal ions in complex marine environments is essential to the safety of marine organisms and human beings. This study developed a novel screen-printed-electrode (SPE) electrochemical sensor for rapid on-site determination of typical heavy metal ions such as Cu2+, Pb2+, Cd2+, and Hg2+ in seawater. The sensor employs a three-electrode system, with the working electrode modified with a composite of metal-organic framework-derived carbon (MOF-C) and multiwalled carbon nanotubes (MWCNTs), thereby significantly enhancing detection sensitivity and selectivity. By optimizing square-wave anodic stripping voltammetry (SWASV) parameters, detection limits of 0.83, 0.40, 1.05, and 0.30 mu M for the detection of Cu2+, Pb2+, Cd2+, and Hg2+ ions were achieved. In mixed-ion detection, excellent peak separation and strong resistance to interferences were demonstrated. Experimental results demonstrate that the sensor exhibits good linear response, excellent interference resistance, and high practicality, providing a new approach for rapid on-site determination of heavy metal pollution in marine environments.