Kormil Saputra, Wida Puteri Agista, Indrawan Eka Badri, Teguh Ardianto, Dian W. Kurniawidi, Masruroh Masruroh, Didik Rahadi Santoso, Ahmad Taufiq
Superparamagnetic Iron Oxide Nanoparticles (SPIONs) have been widely studied for biomedical applications, especially in the fields of imaging and cancer therapy. However, studies on the magneto-thermal characteristics of SPIONs synthesized from natural sources such as iron sand are still limited, especially related to the heating efficiency in alternating magnetic fields. This study has successfully synthesized magnetite-based SPIONs from natural sand using a sono-chemical coprecipitation method, combined with polyaniline and activated carbon to improve magneto-thermal performance. The characterization results using SEM showed nanoparticle morphology with a size between 103.32- 121.23 nm. FTIR analysis confirmed the presence of Fe-O functional groups in tetrahedral and octahedral positions, as well as the presence of hydroxyl groups. XRD showed the crystal structure of magnetite with a crystallite size of 22.6 nm based on the Scherrer method and Rietveld analysis. The VSM results of SPION showed superparamagnetic properties with Mr of -0.00879 emu/g, Ms of 22.11 emu/g, Hc of 0.003564 T, and X of 0.89, which supported the characteristics of low retentivity and high magnetic response. The UV-Vis spectrum showed two characteristic absorption peaks and a direct band gap value of 2.10 eV. Magnetothermal testing showed a temperature increase of up to 13°C under the influence of an alternating magnetic field, indicating the great potential of this material in cancer hyperthermia therapy applications. © Published under licence by IOP Publishing Ltd.
Physics Study Program, Universitas Mataram, Jl. Majapahit No.62, Gomong, Kec. Selaparang , Nusa Tenggara Barat., Mataram, 83115, Indonesia; Physics Department, Universitas Negeri Malang, Jl. Cakrawala No.5, Sumbersari, Lowokwaru District, East Java, Malang City, Indonesia; Tinta Emas Institute, Jl. Sultan Salahuddin No.23, Sekarbela District, Nusa Tenggara Barat, Mataram, 83115, Indonesia; Physics Department, Brawijaya University, Jl. Veteran No.10-11, Ketawanggede, Lowokwaru District, , East Java, Malang City, 65145, Indonesia
