Improving the Electrochemical Detection of Profenofos Insecticides based on TiO2@NiO-CuO Nanocomposite Doped Graphene Paste Electrode

Nurdin, Muhammad; Maulidiyah, Maulidiyah; Muzakkar, Muhammad Zakir; Irwan, Irwan; Arham, Zul; Zulfan, Ahmad

doi:10.22034/abec.2024.716161

Improving the Electrochemical Detection of Profenofos Insecticides based on TiO2@NiO-CuO Nanocomposite Doped Graphene Paste Electrode

Document Type : Original Article

Authors

Muhammad Nurdin ¹

Maulidiyah Maulidiyah ¹

Muhammad Zakir Muzakkar ¹

Irwan Irwan ²

Zul Arham ³

Ahmad Zulfan ⁴

¹ Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo, Jl. H.E.A. Mokodompit Kampus Baru Anduonohu, Kendari 93232 – Southeast Sulawesi, Indonesia

² Department of Pharmacy, Faculty of Sciences and Technology, Institut Teknologi dan Kesehatan Avicenna, Kendari 93117, Southeast Sulawesi, Indonesia

³ Department of Mathematics and Natural Sciences, Institute Agama Islam Negeri (IAIN), Kendari 93563–Southeast Sulawesi, Indonesia

⁴ Nickel Research Institute, Universitas Muhammadiyah Kendari, Jl. K.H. Ahmad Dahlan, Kendari, Southeast Sulawesi 93117, Indonesia

10.22034/abec.2024.716161

Abstract

A rapid and facile method for detecting profenofos is crucial for environmental surveillance and ensuring product quality. Electrochemical sensing, as appears presents significant potential as a nascent technology for profenofos detection in recent years. Herein, NiO-CuO bimetallic modified graphene paste electrode/TiO2 was developed for the detection of profenofos over cyclic voltammetry technique. The TiO2@NiO-CuO were synthesized through the sol-gel method and characterized by various analyses such as SEM, XRD, and FTIR and electrochemical techniques. The superior electrochemical properties of the suggested GPE/TiO2@NiO-CuO were demonstrated by cyclic voltammetry investigations performed in Fe(CN)64−/3− solution. The electrode performance of GPE/TiO2 doped with NiO-CuO towards K3FeCN6 solution is notably enhanced compared to GPE/TiO2 undoped. Doping notably increased the conductivity of the GPE/TiO2, leading to a performance enhancement in the electrocatalytic activity and detection sensitivity of profenofos. Under optimum conditions, the GPE/TiO2@NiO-CuO demonstrated an impressively low detection limit of 0.00132 µg/L, coupled with a favorable detection range spanning from 1.0 μg/L to 10 μg/L with correlation coefficient R2 = 0.992. Moreover, the electrode demonstrates remarkably very good stability, and repeatability with %RSD is only 0.94% over 11 repeated measurements. These results signify that GPE/TiO2@NiO-CuO for detecting profenofos, demonstrates exceptional excellent linearity, repeatability, and promising sensitivity for pesticide detection.

Keywords

GPE/TiO2

NiO-CuO nanocomposite

electrochemical detection

cyclic voltammetry

profenofos insecticide

Subjects