OICC Press Journal of Nanostructure in Chemistry 2193-8865 14 5 2023 02 06 One-dimensional rare-earth tungstate nanostructure encapsulated reduced graphene oxide electrocatalyst-based electrochemical sensor for the detection of organophosphorus pesticide 10.1007/s40097-023-00524-6 EN Ruspika Sundaresan Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, TW Vinitha Mariyappan Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, TW Tse-Wei Chen Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, TW Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei, 106, TW Department of Materials, Imperial College London, London, SW72AZ, GB Shen-Ming Chen Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, TW Muthumariappan Akilarasan Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, TW Xiaoheng Liu Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing, 210094, CN Jaysan Yu Well Fore Special Wire Corporation, Taoyuan, TW Journal Article 2023 02 06 Abstract The use of agricultural pesticides in modern agriculture has permitted enormous and reliable production. The organophosphorus pesticide fenitrothion (FT) is widely used in agricultural regions and has been related to detrimental effects on human health. We constructed an electrochemical sensor that detects fenitrothion (FT) using one-dimensional (1D) Pr 2 (WO 4 ) 3 nanorods (PWO) incorporated reduced graphene oxide (RGO) electrocatalyst that was synthesized hydrothermally. The PWO nanorods are finely embedded on the RGO nanosheet, according to powder XRD, FESEM, EDS, HRTEM, XPS, and micro-Raman studies. The PWO/RGO electrochemical behavior towards FT was studied by the different electrochemical characterization approaches [CV, DPV, AMP( i – t )]. Our proposed PWO/RGO sensor exhibited a linear range of 0.01–313 µM and an LOD of 0.0054 µM in AMP( i – t ). The estimation of FT in different water samples proves the usefulness of the PWO/RGO sensor. Graphical abstract