Functionalized Carbon Nitride/Copper-based MOF Nanocomposites Modified Electrode for Electrochemical Detection of Glyphosate
WANG Qi
LIU Yao
SHU Aolan
XIONG Chanru
CHEN Xing
Abstract：The electrochemical sensor was constructed based on the nanocomposite,which was synthesized from copper-based MOF(Cu-BTC)and mesoporous carbon nitride(CN)containing carbonyl heterocyclic rings.The as-fabricated sensor was used for the detection of glyphosate with the differential pulse voltam-metry method.The detection mechanism of the sensor is the decrease in the response current caused by the complexation reaction between Cu2+and glyphosate.To confirm the morphology and structure of the nanocomposite,it was characterized by scanning electron microscopy,transmission electron microscopy,X-ray diffraction technology,X-ray photoelectron spectroscopy,and Fourier transform infrared spectros-copy.The results showed that the sensor had a highly sensitive response toward glyphosate in a linear range of 10-6～10-12 g/L with a detection limit of 0.157 6 pg/L,and it had good selectivity for glypho-sate.When the sensor was used for the detection of glyphosate in real water samples,the recoveries were in the range of 94％～107％,demonstrating its high accuracy and practicality.
Keywords：differential pulse voltammetryCu-BTCmesoporous carbon nitrideelectrochemical detec-tionglyphosate
Publication Date：2024-06-28
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：12( 22-33 )