This study focuses on the preparation and characterization of Mg-Ni co-doped TiO₂ and its application in the degradation of the pharmaceutical ofloxacin (OFX) under solar irradiation. A wet impregnation method was used to prepare Mg-Ni co-doped TiO₂. Characterization, optimization, and kinetic studies revealed that the doped TiO₂ material is effective in degrading OFX, with potential applications in water treatment or environmental remediation processes. Ultraviolet diffuse reflectance spectroscopy indicated that the band gap of TiO₂ was reduced due to doping with Mg and Ni. A reduced band gap can enhance the material's photocatalytic properties, which is important for its application in solar-driven degradation processes. The catalyst dose and OFX concentration for the degradation process were optimized. A catalyst dose of 2 g L⁻¹ and an OFX solution with a concentration of 40 ppm, maintained at pH 5, resulted in the highest degradation efficiency. The degradation process followed first-order kinetics, suggesting that the rate of degradation increased with increasing doping.

中文翻译：

---

Mg-Ni共掺杂TiO2催化剂光催化降解废水中的氧氟沙星

本研究重点研究了Mg-Ni共掺杂TiO ₂的制备、表征及其在太阳辐射下降解药物氧氟沙星(OFX)中的应用。采用湿法浸渍法制备Mg-Ni共掺杂TiO ₂。表征、优化和动力学研究表明，掺杂的TiO ₂材料可有效降解OFX，在水处理或环境修复过程中具有潜在的应用前景。_{紫外漫反射光谱表明TiO 2}的带隙由于Mg和Ni的掺杂而减小。减小的带隙可以增强材料的光催化性能，这对于其在太阳能驱动的降解过程中的应用非常重要。优化了降解过程的催化剂剂量和 OFX 浓度。^{2 g L -1}的催化剂剂量和浓度为40 ppm的OFX溶液，保持在pH 5，产生最高的降解效率。降解过程遵循一级动力学，表明降解速率随着掺杂的增加而增加。