Graphene oxide@Ce-doped TiO2 nanoparticles as electrocatalyst materials for voltammetric detection of hazardous methyl parathion

Raja Nehru; Yung-Fu Hsu; Sea-Fue Wang; Cheng-Di Dong; Mani Govindasamy; Mohamed A Habila; Najla AlMasoud

doi:10.1007/s00604-021-04847-5

Graphene oxide@Ce-doped TiO₂ nanoparticles as electrocatalyst materials for voltammetric detection of hazardous methyl parathion

Mikrochim Acta. 2021 May 29;188(6):216. doi: 10.1007/s00604-021-04847-5.

Authors

Raja Nehru^{1

2}, Yung-Fu Hsu³, Sea-Fue Wang⁴, Cheng-Di Dong⁵, Mani Govindasamy¹, Mohamed A Habila⁶, Najla AlMasoud⁷

Affiliations

¹ Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan.
² Sustainable Environmental Research Center, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan.
³ Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan. yfhsu@ntut.edu.tw.
⁴ Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan. sfwang@ntut.edu.tw.
⁵ Sustainable Environmental Research Center, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan. cddong@nkust.edu.tw.
⁶ Advanced Materials Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia. mhabila@ksu.edu.sa.
⁷ Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, 11671, Saudi Arabia.

PMID: 34052922
DOI: 10.1007/s00604-021-04847-5

Abstract

A sensitive voltammetric sensor has been developed for hazardous methyl parathion detection (MP) using graphene oxide@Ce-doped TiO₂ nanoparticle (GO@Ce-doped TiO₂ NP) electrocatalyst. The GO@Ce-doped TiO₂ NPs were prepared through the sol-gel method and characterized by various physicochemical and electrochemical techniques. The GO@Ce-doped TiO₂ NP-modified glassy carbon electrode (GCE) addresses excellent electrocatalytic activity towards MP detection for environmental safety and protection. The developed strategy of GO@Ce-doped TiO₂ NPs at GCE surfaces for MP detection achieved excellent sensitivity (2.359 μA μM^-1 cm^-2) and a low detection limit (LOD) 0.0016 μM with a wide linear range (0.002 to 48.327 μM). Moreover, the fabricated sensor shows high selectivity and long-term stability towards MP detection; this significant electrode further paves the way for real-time monitoring of environmental quantitative samples with satisfying recoveries.

Keywords: Environmental monitoring; Modified electrode; Pesticide sensor; Rare-earth doping; Titanium dioxide (TiO2).

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon / chemistry
Catalysis
Cerium / chemistry
Electrochemical Techniques / methods*
Electrodes
Graphite / chemistry*
Insecticides / analysis
Limit of Detection
Metal Nanoparticles / chemistry
Methyl Parathion / analysis*
Nanocomposites / chemistry*
Reproducibility of Results
Titanium / chemistry

Substances

Insecticides
graphene oxide
titanium dioxide
Cerium
Methyl Parathion
Carbon
Graphite
Titanium