Designing of cerium-doped bismuth vanadate nanorods/functionalized-MWCNT nanocomposite for the high toxicity of 4-cyanophenol herbicide detection in human urine sample

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Vol. 639; p. 128371
• Main Authors: Gopi, Praveen Kumar, Srinithi, Subburaj, Chen, Shen-Ming, Ravikumar, Chandan Hunsur
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 20.04.2022
• Subjects: 4-Cyanophenol; Carbon-based material; Electrochemical sensor; Hydrothermal method; 4-Cyanophenol; Carbon-based material; Hydrothermal method; Electrochemical sensor
• ISSN: 0927-7757; 1873-4359
• DOI: 10.1016/j.colsurfa.2022.128371

Nanomaterials play a crucial role in fabrication of sensor electrode towards the monitoring of biomolecules and environmental hazardous compounds. In the present study, we designed a novel nanocomposite material based on cerium-doped bismuth vanadate nanorods endorsed with functionalized multi-walled carbon nanotubes (CeBiVO4/f-MWCNT) by the hydrothermal synthesis method and used for the detection of 4-Cyanophenol (4-CY) environmental pollutant. The crystal structure, surface morphology and electrochemical properties of the as-prepared samples were systematically characterized discussed. The determination of hazardous 4-CY herbicide is examined by cyclic voltammetry and differential pulse voltammetry (DPV) using the CeBiVO4/f-MWCNT nanocomposite fabricated electrode. The CeBiVO4/f-MWCNT nanocomposite on electrode showed an excellent electrocatalytic property toward 4-CY herbicide with a low detection limit of 7.3 nM and broad linear range of 0.001–1207 & 1307–3107 μM. In addition, the CeBiVO4/f-MWCNT electrodes exhibited a good selectivity, repeatability and reproducibility to 4-CY detection, thus proved a suitable sensing platform for 4-CY analysis in practical application. In this paper, CeBiVO4/f-MWCNT composite has been synthesized via hydrothermal method and they were utilized for the electrocatalytic determination of 4-Cyanophenol. [Display omitted] •The CeBiVO4/f-MWCNT composites were synthesized via hydrothermal method.•The CeBiVO4/f-MWCNT composite exhibits good electrocatalytic performance.•The electrochemical mechanism was investigated.•The CeBiVO4/f-MWCNT modified electrode was utilized for the determination of 4-Cyanophenol in real samples.