期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 331, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.129413
关键词
Hydrothermal technique; Electrocatalyst; Anti-inflammatory drug; Mesalazine; Electrochemical sensor
资金
- National Taipei University of Technology
In this study, g-C3N4 and CeVO4 were successfully synthesized and used to prepare a superior g-C3N4/CeVO4/SPCE modified electrode for detecting MEZ, showing excellent sensitivity, a wide working range, and a very low detection limit, making it applicable for real-time analysis.
Rare-earth metal vanadate has gained much interest in recent years due to its excellent catalytic properties and chemical stability in electrochemical sensors. In this study, we have explored the electrochemical activity of graphitic-carbon nitride (g-C3N4) and hierarchical 3D cerium vanadate (CeVO4) by using screen printed carbon paste electrode (SPCE) for detection of mesalazine (MEZ). Successfully, g-C3N4 and CeVO4 were synthesized by using a simple hydrothermal process, and then to form a nanocomposite ultrasonication procedure is approached. To confirm the structural and morphological parameters X-ray diffraction (XRD), X-ray photoelectron spectroscopy, Field-emission scanning electron microscopy (FE-SEM), Transmission electron microscopy (TEM) is being utilized. The g-C3N4/CeVO4/SPCE modified electrode has exhibited superior electrocatalytic performance in detecting MEZ with lower R-ct value and with the high active surface area when compared with other electrodes. The prepared sensor has shown good sensitivity 18.92 mu A mu M-1 cm(-2) and with a huge working range of 0.002-380 mu M, with a promising trace-level limit of detection of about 0.00547 mu M by using differential pulse voltammetry (DPV). Henceforth, g-C3N4/CeVO4/SPCE was carried out to subject real-time application in detecting MEZ in various biological, river water, and pharmaceutical samples which resulted in excellent recovery stating the chosen sensor is applicable in real-time analysis.
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