Rita Prasetyowati, Aura Novanti Utomo Putri, Runny Indo Saputri, Evan Fajri Mulia Harahap, Muhammad Riswan, Pinaka Elda Swatika, Fika Fauzi, Eri Widianto
This study presents the development of an efficient and low-cost photocatalyst for methylene blue (MB) degradation using magnetite (Fe3O4) derived from natural iron sand combined with graphene oxide (GO). The Fe3O4 was synthesized via a co-precipitation method using iron sand from Glagah Beach, Indonesia, while the Fe3O4/GO composites were prepared through a sonochemical mixing process with varying GO content (0.050, 0.075, and 0.100 g). The structural and optical properties were characterized by XRD, HR-TEM, UV–Vis, and SEM–EDX. The photocatalytic performance was evaluated under UV light for 150 min, demonstrating that the composite with 0.100 g GO achieved the highest MB degradation efficiency of 99.72%. This work demonstrates the potential of natural-resource-based Fe3O4/GO composites as sustainable photocatalysts for water treatment applications. © Iranian Chemical Society 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 Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, PO Box BLS 21, Yogyakarta, 55281, Indonesia; Department of Physics, Faculty of Engineering, Universitas Singaperbangsa Karawang, Telukjambe Timur, Karawang, 41361, Indonesia
