4.7 Article

Electrochemical Determination of Hazardous Herbicide Diuron Using MWCNTs-CS@NGQDs Composite-Modified Glassy Carbon Electrodes

期刊

BIOSENSORS-BASEL
卷 13, 期 8, 页码 -

出版社

MDPI
DOI: 10.3390/bios13080808

关键词

diuron; electrochemical sensor; multi-walled carbon nanotubes; nitrogen-doped graphene quantum dot

向作者/读者索取更多资源

In this research, an innovative electrochemical sensor was developed for the detection of Diuron pesticide. The sensor showed a wide linear range, low limit of detection, and high sensitivity. It also demonstrated good anti-interference performance, reproducibility, and stability.
Diuron (DU) abuse in weed removal and shipping pollution prevention always leads to pesticide residues and poses a risk to human health. In the current research, an innovative electrochemical sensor for DU detection was created using a glassy carbon electrode (GCE) that had been modified with chitosan-encapsulated multi-walled carbon nanotubes (MWCNTs-CS) combined with nitrogen-doped graphene quantum dots (NGQDs). The NGQDs were prepared by high-temperature pyrolysis, and the MWCNTs-CS@NGQDs composite was further prepared by ultrasonic assembly. TEM, UV-Vis, and zeta potential tests were performed to investigate the morphology and properties of MWCNTs-CS@NGQDs. CV and EIS measurements revealed that the assembly of MWCNTs and CS improved the electron transfer ability and effective active area of MWCNTs. Moreover, the introduction of NGQDs further enhanced the detection sensitivity of the designed sensor. The MWCNTs-CS@NGQDs/GCE electrochemical sensor exhibited a wide linear range (0.08 similar to 12 mu g mL(-1)), a low limit of detection (0.04 mu g mL(-1)), and high sensitivity (31.62 mu A ( mu g mL(-1))(-1)cm(-2)) for DU detection. Furthermore, the sensor demonstrated good anti-interference performance, reproducibility, and stability. This approach has been effectively employed to determine DU in actual samples, with recovery ranges of 99.4 similar to 104% in river water and 90.0 similar to 94.6% in soil. The developed electrochemical sensor is a useful tool to detect DU, which is expected to provide a convenient and easy analytical technique for the determination of various bioactive species.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据