Abstract

This work is designed for the synthesis of TiO₂ and Fe doped TiO₂ nanoparticles (NPs) using sol-gel (SG) and liquid impregnation (LI) methods. The comparison of physicochemical characters, the photocatalytic potential of pure and doped NPs, and cost analysis of the techniques were evaluated. The prepared NPs were characterized through XRD, BET/BJH, SEM, UV-Vis DRS, and pH of the point of zero charges (pH_PZC) analyses. The results have shown the dominant anatase phase of highly pure crystalline NPs. The SG prepared pure and Fe doped TiO₂ NPs revealed with high surface area (242 and 245 m²/g, respectively) as compared to the materials prepared via LI technique (57.5 and 82 m²/g, respectively). The photocatalytic potential of the prepared NPs was tested for cationic dye (Methylene Blue) and anionic dye (Methyl Orange) under ordinary visible light (Compact Fluorescent Light). The green route synthesis i.e. LI doped NPs, revealed high photo-degradation efficiencies for Methylene Blue and Methyl Orange (87 and 84%) compared to SG prepared doped NPs (76 and 70%), respectively.

摘要

这项工作旨在使用溶胶-凝胶 (SG) 和液体浸渍 (LI) 方法合成 TiO ₂和 Fe 掺杂的 TiO _{2纳米颗粒 (NP)。}评估了理化特性的比较、纯纳米粒子和掺杂纳米粒子的光催化潜力以及技术的成本分析。通过 XRD、BET/BJH、SEM、UV-Vis DRS 和零电荷点 (pH _PZC ) 分析对制备的 NP 进行表征。结果表明，高纯度结晶 NP 的主要锐钛矿相。与通过 LI 技术制备的材料（分别为 57.5和₈₂ ^{m 2}/克，分别）。在普通可见光（紧凑型荧光灯）下测试阳离子染料（亚甲基蓝）和阴离子染料（甲基橙）制备的 NP 的光催化潜力。绿色路线合成，即 LI 掺杂的 NP，与 SG 制备的掺杂 NP（76 和 70%）相比，亚甲蓝和甲基橙的光降解效率分别为 87 和 84%。