This work aims to study the structural, optical and photocatalytic properties of pure and different metal ions, such as rare earth samarium, transition scandium and post transition stannic ions doped zirconia (ZrO₂) nanoparticles, synthesized via the facile precipitation process. The effects of the different metal ions on the physic-chemical properties of zirconia were analysized by using different techniques. The structural properties of the synthesized samples were studied by the XRD and FTIR analyses, which confirm that both the pure and different metal ions doped zirconia nanoparticles reveal a tetragonal structure with an average crystallite size in the range of 9.46–4.05 nm and are in good agreement with the TEM results. The smooth spherical surface morphologies and presence of elements of the samples have been confirmed by the SEM and EDX analyses. The Optical properties of the different metal ions doped ZrO₂ nanoparticles were evaluated using UV–vis absorption and PL emission spectroscopies. Blue shifts were observed and the band gap energies of the samples found to be in the range of 5.51–5.65 eV, which are higher than that of bulk ZrO₂. The enhanced broad green emissions at 578 nm in the PL spectra correspond to the ⁵D₀–⁷F₁ transition, which contributes to the crystallinity and presence of defects concentration in the samples. The performances of the pure and different metal ions doped zirconia nanoparticles in the photocatalytic degradation of methyl orange (MeO) dye under UV light were evaluated, and the degradation percentage (%) found to be in the range of 58.48–98.24%; the results have been comparatively discussed. The detailed mechanism for the degradation of the MeO dye by using metal ions doped ZrO₂ catalyst is discussed. The Chemical oxygen demand (COD) test has been done to confirm the total quantity of oxygen required for the oxidation of the organic MeO dye solution into mineralization.

这项工作旨在研究纯金属和不同金属离子的结构，光学和光催化特性，例如稀土sa，过渡scan和过渡后锡离子掺杂的氧化锆（ZrO ₂）纳米粒子，通过便捷的沉淀过程合成。采用不同的技术分析了不同金属离子对氧化锆物理化学性质的影响。通过XRD和FTIR分析研究了合成样品的结构特性，这证实了纯金属离子和不同金属离子掺杂的氧化锆纳米颗粒均显示出四方结构，平均晶粒尺寸在9.46–4.05 nm范围内，并且质量良好。与TEM结果一致。SEM和EDX分析已经确认了样品的光滑球形表面形态和元素的存在。不同金属离子掺杂ZrO ₂的光学性质使用紫外可见吸收和PL发射光谱对纳米颗粒进行了评估。观察到蓝移，样品的带隙能在5.51至5.65 eV的范围内，高于ZrO ₂的能级。PL光谱中578 nm处增强的宽绿光发射对应于⁵ D ₀ – ⁷ F ₁过渡，这有助于结晶和样品中缺陷浓度的存在。评估了纯金属和不同金属离子掺杂的氧化锆纳米粒子在紫外光下对甲基橙（MeO）染料的光催化降解性能，发现降解百分率（％）在58.48–98.24％范围内。结果进行了比较讨论。讨论了使用掺杂金属离子的ZrO ₂催化剂降解MeO染料的详细机理。已完成化学需氧量（COD）测试，以确认将有机MeO染料溶液氧化成矿物质所需的总氧气量。