Rita Prasetyowati, Runny Indo Saputri, Evan Fajri Mulia Harahap, Pinaka Elda Swastika, Fika Fauzi, Wipsar Sunu Brams Dwandaru, Ariswan Ariswan, Muhammad Riswan, Eri Widianto
This study explores the potential of Fe3O4/Graphene Oxide (GO) nanocomposites for enhancing the photocatalytic degradation of rhodamine-B (RhB) textile dye waste. Fe3O4 was extracted from natural iron sand from Glagah Beach, Kulon Progo, Indonesia, and synthesized via a co-precipitation method. Characterization using scanning electron microscopy and energy-dispersive X-ray analysis revealed the nanocomposite comprises three key elements: Fe (28.07%), O (44.37%), and C (20.92%). X-ray diffraction confirmed the inverse spinel structure of Fe3O4, with a band gap of 2.92 eV, indicating its semiconductor properties. The Fe3O4/GO nanocomposites exhibited superior photocatalytic activity, achieving 91.3% degradation of RhB under UV light after 270 min, outperforming pure Fe3O4. However, degradation efficiency decreased by an average of 12.23% over three cycles. The enhanced degradation performance is attributed to effective charge carrier separation and improved visible light absorption facilitated by GO. These results position Fe3O4/GO nanocomposites as efficient, cost-effective, and eco-friendly photocatalysts, offering promising solutions for textile wastewater treatment. © Qatar University and Springer Nature Switzerland AG 2025.
Department of Physics Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta, Jalan Colombo No 1, Depok, Sleman, Yogyakarta, 55281, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, PO Box BLS 21, Sekip Utara, Yogyakarta, 55281, Indonesia; Department of Physics, Faculty of Engineering, Universitas Singaperbangsa Karawang, Telukjambe Timur, Karawang, 41361, Indonesia
