Akademik Veri Yönetim Sistemi
NANOTR-18, İstanbul, Türkiye, 26 - 28 Ağustos 2024, ss.292
The degradation and neutralization of chemicals released into the environment remain a frequently studied topic today [1]. A significant portion of these studies focuses on the purification of chemicals released into water bodies. Considering the potential of phenolic dyes to pollute clean water, the removal of these wastes is of great importance [2]. Most of the existing wastewater treatment systems are not only costly but also produce environmentally harmful by-products. Catalytic reduction emerges as an effective and advantageous strategy for the elimination of these pollutants. This thesis aims to develop an appropriate Ag-modified ZnO thin film catalyst system for the catalytic reduction of methylene orange, a toxic compound commonly found in wastewater, and to determine the catalytic performance of these systems. The production of heterogeneous catalysts is targeted by immobilizing plasmonic silver nanoparticles (AgNPs) on ZnO thin film supports. The catalytic activities of the catalysts were evaluated during the reduction of methylene orange (MO) in the presence of the reducing agent NaBH4. In these experiments, the effects of support material-metal nanoparticle interaction, AgNP size, AgNP loading amount, catalyst quantity, and the annealing of ZnO thin film supports at different temperatures on catalytic activity were determined. The structural analyses of Ag@ZnO samples were performed using SEM and XRD. Additionally, their optical characterizations were conducted, and the normalized hydrogen energy levels were calculated to determine the impact of annealing on the structure and its catalytic properties.