Electrochemical Photodegradation of Methyl Red using Reduction Graphene Oxide of Palm Shells Supported TiO2 Nanoparticle under Visible Irradiation

Irwan, Irwan; Jumbi, Intan Sari; Alimin, Alimin; Ratna, Ratna; Nohong, Nohong; Maulidiyah, Maulidiyah; Nurdin, Muhammad; Muzakkar, Muhammad Zakir

doi:10.22034/abec.2023.706509

Electrochemical Photodegradation of Methyl Red using Reduction Graphene Oxide of Palm Shells Supported TiO2 Nanoparticle under Visible Irradiation

Document Type : Original Article

Authors

Irwan Irwan ¹

Intan Sari Jumbi ²

Alimin Alimin ²

Ratna Ratna ³

Nohong Nohong ²

Maulidiyah Maulidiyah ²

Muhammad Nurdin ²

Muhammad Zakir Muzakkar ²

¹ Department of Pharmacy, Faculty of Sciences and Technology, Institut Teknologi dan Kesehatan Avicenna, Kendari 93117, Southeast Sulawesi, Indonesia

² 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

³ Chemistry Education Department, Teacher Training and Education Faculty, Universitas Halu Oleo, Kendari, Southeast Sulawesi 93232, Indonesia

10.22034/abec.2023.706509

Abstract

Contamination of dyes such as methyl red in the aquatic environment causes numerous problems. Therefore, it is necessary to develop a novel catalyst that can quickly, accurately, and effectively eliminate dye contaminants. In this study, we report the successful preparation of a new candidate electrode, the rGOps-TiO₂ composite, via a hydrothermal method. Additionally, the electrodes were characterized using X-ray diffraction, spectroscopic techniques such as FTIR, and microscopic techniques such as SEM-EDX to ensure the synthesis of the prepared electrode material. The photocurrent response indicated that the rGOps-TiO₂ electrode exhibited higher visible light absorption compared to the undoped rGOps. The degradation efficiency of methyl red reached 90.04% in the UV irradiation-assisted photoelectrocatalytic process, which was significantly different from the efficiency achieved under visible light irradiation, which was 94.78%. Therefore, the photoelectrocatalytic (PEC) technique based on rGOps-TiO₂ showed much higher degradation efficiency for methyl red compared to the photocatalytic (PC) technique. This suggests that PEC holds promise for the treatment of dye wastewater in aquatic environments.

Keywords

Photoelectrocatalysis

rGOps-TiO2 electrode

Methyl red

Synthetic dye

Catalytic degradation

Subjects