Nanosized TiO₂ photocatalysis technology is one of the most promising technologies for the treatment of wastewater containing azo dyes. In this work, TiO₂ was deposited on a mesoporous SBA-15 molecular sieve by chemical deposition, and rare earth (RE) metal neodymium (Nd) was further deposited on the surface of the catalyst to obtain an Nd–TiO₂–SBA-15 photocatalyst. The prepared photocatalyst was analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDS), and N₂ adsorption–desorption. The activity of the Nd–TiO₂–SBA-15 photocatalyst was evaluated by using methyl orange to represent the azo dye. The effects of different Nd deposition amounts and different solution pH values on the photocatalyst performance were principally studied. The results show that the synthesized photocatalyst formed an anatase crystal with a mesoporous structure. The specific surface area and pore size of the photocatalyst are 548.2 m²/g and 6.5 nm, respectively. As the amount of Nd deposition gradually increases, the activity of photocatalyst undergoes a process of first rising and then decreasing. In addition, the photocatalyst maintains high photocatalytic activity in the pH range of 2–10, exhibiting good acid–base adaptability. This work demonstrates that the Nd–TiO₂–SBA–15 nanophotocatalyst has broad practical application prospects on a large scale.

纳米TiO ₂光催化技术是用于处理含偶氮染料废水的最有前途的技术之一。在这项工作中，通过化学沉积将TiO ₂沉积在中孔SBA-15分子筛上，然后将稀土（RE）金属钕（Nd）进一步沉积在催化剂表面以获得Nd-TiO ₂ -SBA- 15光触媒。通过X射线衍射（XRD），透射电子显微镜（TEM），能量色散X射线光谱（EDS）和N ₂吸附-脱附对所制备的光催化剂进行了分析。Nd–TiO ₂的活性用甲基橙代表偶氮染料对–SBA-15光催化剂进行了评估。主要研究了不同的Nd沉积量和不同的溶液pH值对光催化剂性能的影响。结果表明，合成的光催化剂形成具有中孔结构的锐钛矿型晶体。光催化剂的比表面积和孔径分别为548.2m ² / g和6.5nm 。随着Nd沉积量的逐渐增加，光催化剂的活性经历了先升高然后降低的过程。此外，光催化剂在2-10的pH范围内保持较高的光催化活性，表现出良好的酸碱适应性。这项工作证明了Nd–TiO ₂-SBA-15纳米光催化剂具有广阔的实际应用前景。