Cerium vanadate/graphitic carbon nitride nanocomposite for electrochemical detection of diphenylamine
Year: 2025
Type: article
Abstract: Physiological storage issues in fruits often result from inadequate post-harvest handling. Diphenylamine (DPA), commonly used to prevent surface scald, may leave toxic residues, necessitating precise detection. In this study, cerium orthovanadate (CeVO 4 ) was synthesized via a hydrothermal route and characterized using XRD, FTIR, HRTEM, and XPS. A CeVO 4 @g-C 3 N 4 nanocomposite was fabricated and drop-cast onto a screen-printed carbon electrode (SPCE) for electrochemical sensing of DPA. Sensor performance was evaluated using EIS, CV, and DPV, along with optimization of catalyst loading, scan rate, pH, and stability. The CeVO 4 @g-C 3 N 4 -modified SPCE showed a wide linear detection range (0.01–792.0 µM), low detection limit (1.1 nM), and high sensitivity. Real fruit sample analysis demonstrated high recovery and reliability. The study's novelty lies in the use of CeVO 4 @g-C 3 N 4 as a sensitive and reproducible sensing interface, offering a practical platform for DPA detection in food safety monitoring.
Source: Materials Research Bulletin
Authors: Balasubramanian Akila, Sakthivel Kogularasu, Tse-Wei Chen, Sivaprakash Sengodan, Jaysan Yu, Shen-Ming Chen, Yen-Yi Lee, Guo-Ping Chang-Chien
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,610
Awards: Mxenes and High-Entropy Materials for Improving Health Monitoring, Pollution Detection Electrochemical Sensors, Energy Conversion and Storage Applications via Electroanalysis/Electrocatalysis Study, Rational Design of Multimetal Oxyhydroxides, Perovskites Transition Metal Oxides, Novel Two Dimensional Transition Metal Compounds and Its Composites for the Real Time Profiling of Various Biomolecules, Biomarkers, and Pharmaceutical Drugs, Electrocatalysis and Energy Applications
OpenAlex ID: W4414001896