Next Article in Journal
In Situ Formation of Quantum Dots as a Novel Fluorescence Probe for Phosphate Anion Detection
Previous Article in Journal
Electrochemical Characterization of pH Indicators in Deep Eutectic Solvent for Carbon Dioxide Sensing
Previous Article in Special Issue
Fabrication of Palladium-Decorated Zinc Oxide Nanostructures for Non-Enzymatic Glucose Sensing
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Chemosensors
Volume 14
Issue 2
10.3390/chemosensors14020040
chemosensors-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Heavy Metal Ion Detection by Carbonized Metal–Organic–Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors

by
Wei Wang
1,2,†,
Peiting Zhao
3,†,
Chenjie Wang
3,†,
Aixuan Xu
4,5,
Wei Ma
3,
Gan Wang
3,
Zehua Han
3,
Yishan Lu
4,5,
Jin Yan
1 and
Ran Peng
3,*
1
Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching, Guangdong Ocean University, Zhanjiang 524088, China
2
College of Naval Architecture and Shipping, Guangdong Ocean University, Zhanjiang 524088, China
3
Marine Engineering College, Dalian Maritime University, Dalian 116026, China
4
Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China
5
Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Chemosensors 2026, 14(2), 40; https://doi.org/10.3390/chemosensors14020040
Submission received: 23 December 2025 / Revised: 30 January 2026 / Accepted: 1 February 2026 / Published: 3 February 2026
(This article belongs to the Special Issue Advanced Nanomaterials-Based (Bio-)Sensors for Electrochemical Detection and Analysis: 2nd Edition)
Versions Notes

Abstract

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 μM 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.
Keywords: SPE electrochemical sensor; heavy metal ion detection; metal–organic framework; square wave anodic stripping voltammetry SPE electrochemical sensor; heavy metal ion detection; metal–organic framework; square wave anodic stripping voltammetry

Share and Cite

MDPI and ACS Style

Wang, W.; Zhao, P.; Wang, C.; Xu, A.; Ma, W.; Wang, G.; Han, Z.; Lu, Y.; Yan, J.; Peng, R. Heavy Metal Ion Detection by Carbonized Metal–Organic–Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors. Chemosensors 2026, 14, 40. https://doi.org/10.3390/chemosensors14020040

AMA Style

Wang W, Zhao P, Wang C, Xu A, Ma W, Wang G, Han Z, Lu Y, Yan J, Peng R. Heavy Metal Ion Detection by Carbonized Metal–Organic–Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors. Chemosensors. 2026; 14(2):40. https://doi.org/10.3390/chemosensors14020040

Chicago/Turabian Style

Wang, Wei, Peiting Zhao, Chenjie Wang, Aixuan Xu, Wei Ma, Gan Wang, Zehua Han, Yishan Lu, Jin Yan, and Ran Peng. 2026. "Heavy Metal Ion Detection by Carbonized Metal–Organic–Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors" Chemosensors 14, no. 2: 40. https://doi.org/10.3390/chemosensors14020040

APA Style

Wang, W., Zhao, P., Wang, C., Xu, A., Ma, W., Wang, G., Han, Z., Lu, Y., Yan, J., & Peng, R. (2026). Heavy Metal Ion Detection by Carbonized Metal–Organic–Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors. Chemosensors, 14(2), 40. https://doi.org/10.3390/chemosensors14020040

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop