ZIF-67 based CoS2 self-assembled on graphitic carbon nitride microtubular for sensitive electrochemical detection of paraquat in fruits

Chenghu Yuan; Cui Tang; Xuejia Zhan; Menglin Zhou; Lei Zhang; Wen-Tong Chen; Abdukader Abdukayum; Guangzhi Hu

doi:10.1016/j.jhazmat.2024.133715

ZIF-67 based CoS₂ self-assembled on graphitic carbon nitride microtubular for sensitive electrochemical detection of paraquat in fruits

J Hazard Mater. 2024 Apr 5:467:133715. doi: 10.1016/j.jhazmat.2024.133715. Epub 2024 Feb 4.

Authors

Chenghu Yuan¹, Cui Tang², Xuejia Zhan³, Menglin Zhou², Lei Zhang⁴, Wen-Tong Chen⁵, Abdukader Abdukayum⁶, Guangzhi Hu⁷

Affiliations

¹ Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China; School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China.
² Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China.
³ School of Agriculture and Biology & Key Laboratory of Urban Agriculture, Shanghai Jiao Tong University, Shanghai 200240, China.
⁴ School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China. Electronic address: leizhang@aust.edu.cn.
⁵ Key Laboratory of Coordination Chemistry of Jiangxi Province, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an 343009, China.
⁶ Xinjiang Key Laboratory of Novel Functional Materials Chemistry, College of Chemistry and Environmental Sciences, Kashi University, Kashi 844000, China.
⁷ Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China; Southwest United Graduate School, Kunming 650092, China. Electronic address: guangzhihu@ynu.edu.cn.

PMID: 38359763
DOI: 10.1016/j.jhazmat.2024.133715

Abstract

Paraquat (PQ) is a widely used and harmful herbicide that must be detected in the environment. This study reports a novel composite (CoS₂-GCN) prepared by assembling cobalt disulfide (CoS₂) derived from metal-organic frameworks (MOFs) on graphitic carbon nitride (GCN). An electrochemical sensor (CoS₂-GCN/ glassy carbon electrode (GCE)) was successfully prepared by modifying CoS₂-GCN onto a GCE to sensitively detect PQ. Different concentrations of PQ were detected using square-wave voltammetry, and the CoS₂-GCN/GCE electrochemical sensor showed remarkable response signals for PQ in the range of 20 - 1000 nM and 1 - 13 μM, with a detection limit of 4.13 nM (S/N = 3). The CoS₂-GCN/GCE electrochemical sensor exhibited high stability, reproducibility, and immunity to interference, which were attributed to the synergistic effects of CoS₂ and GCN. In addition, the CoS₂-GCN/GCE electrochemical sensor showed high applicability for the analysis of fruit samples. Therefore, the proposed sensor has potential applications in PQ detection.

Keywords: Cobalt disulfide; Electrochemical sensors; Graphic carbon nitride; Paraquat; Square wave voltammetry.

MeSH terms

Fruit* / chemistry
Graphite*
Limit of Detection
Nitrogen Compounds*
Paraquat* / analysis
Reproducibility of Results

Substances

graphitic carbon nitride
Paraquat
Graphite
Nitrogen Compounds