Yurin Karunia Apsha Albaina Iasya, Fitri Khoerunnisa, Sadina Sahitya Dewi, Restiani Alia Putri, Mita Nurhayati, Ubed Sonai Fahruddin Arrozi, Yessi Permana, Murni Handayani, Wijayanti Dwi Astuti, Oh Wen Da, Istifhamy Irnanda
The discharge of organic dyes into water systems poses severe risks to human health and aquatic ecosystems. A remarkable technique that is increasingly recognized for dyes degradation is photocatalysis. This work aims to investigate the role of zinc oxide/nickel oxide (ZnO/NiO) nanocomposites in enhancing photocatalytic degradation efficiency of dyes molecules. The nanocomposites were prepared using a simple ultrasonication technique and analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). The XRD pattern of the ZnO/NiO nanocomposites exhibited characteristic peaks aligned with the ZnO and NiO phases, referring to JCPDS standards. The SEM images of nanocomposites featured the rod and irregular flake-like structures with the average size of 80 nm. The nanocomposites showed the highest dye photodegradation efficiency (RB 93.65% and MO 94.82%) in view of a larger semicircular diameter and lowest band gap energy as verified by Nyquist plot and DFT calculation. These results emphasized the synergistic effect of ZnO/NiO nanocomposites in promoting dye photocatalytic degradation. © 2025 Komunitas Ilmuwan dan Profesional Muslim Indonesia. All rights reserved.
Department of Chemistry, Indonesia University of Education, Bandung, 40154, Indonesia; Department of Advanced Science and Technology Convergence, Kyungpook National University, Sangju-si, 37224, South Korea; Department of Chemistry, Faculty of Mathematics and Natural Sciences, State University of Malang, Malang, 65145, Indonesia; Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural sciences, Institut Teknologi Bandung, Bandung, 40132, Indonesia; Research Centre for Advanced Materials, National Research and Innovation Agency (BRIN), Tangerang Selatan, 15314, Indonesia; Department of Electrical Engineering and Informatics, Vocational College, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia; School of Chemical Sciences, Universiti Sains Malaysia, Penang, 11800, Malaysia
