Akademik Veri Yönetim Sistemi
5thInternational Congress of Engineering and Natural Sciences (ICENSS 2025), Ankara, Türkiye, 24 - 25 Mayıs 2025, ss.240-252, (Tam Metin Bildiri)
Industrial waste is one of the main sources of environmental pollution that threaten many species with extinction and pose significant health risks to humans and other living things. The accumulation of these pollutants, most of which are chemically stable, poses an increasing ecological threat. Pd(0) doped catalysts offer effective solutions for environmental remediation by showing a strong potential in degrading organic pollutants. In this study, activated carbon was produced by first applying hydrothermal carbonization to the spongy part of sunflower stalk, an agricultural waste material, and then by applying chemical activation with phosphoric acid under 100 mL/min nitrogen flow at 800°C. Then, a catalyst was prepared by adding Pd(0) to this carbon support solid. The catalytic activity of the prepared catalyst was investigated on Rhodamine B, which was selected as a model compound, together with NaBH4. The porosity properties of the produced activated carbon were investigated by BET, BJH and QSDFT methods. BET analysis showed a surface area of 570 m²/g, a pore volume of 0.756 cm³/g, and an average pore diameter of 5.31 nm. The material contained mostly meso- and macropores. Structural and morphological properties were analyzed using XRD and SEM. The Pd(0) doped catalyst provided 98.5% color removal of Rhodamine B in 9 min with a calculated decomposition rate constant of 0.401 min⁻¹.
This research was supported by the TÜBİTAK 2209-A University Students Research Projects Support Program.