One of the challenges in research into photoelectrocatalytic (PEC) degradation of pollutants is finding the appropriate photoanode material, which has a significant impact on the process efficiency. Among all others, photoelectrodes based on an ordered TiO₂ nanotube arrays are a promising material due to well-developed surface area and efficient charge separation. To increase the PEC activity of this material, the SILAR method was used to decorate Ti/TiO₂ nanotubes by PbS quantum dots (QD). The ifosfamide (IF) degradation rate constants was twice as higher for PbS-Ti/TiO₂ (0.0148 min⁻¹) than for Ti/TiO₂ (0.0072 min⁻¹). Our research showed the highest efficiency of PEC degradation of drugs using IIIPbS-Ti/TiO₂ made with 3 SILAR cycles (PbS QD size mainly 2–4 nm). The 4 and 6 of SILAR cycles resulted in the aggregation of PbS nanoparticles on the Ti/TiO₂ surface and decreased IF PEC degradation rate to 0.0043 and 0.0033 min⁻¹, respectively. Research on PEC mechanism has shown that the drugs are degraded mainly by the activity of photogenerated holes and hydroxyl radicals. In addition, the identified drug intermediates made possible to propose a degradation pathways of anticancer drugs and the ecotoxicity test show no inhibition of Lemna minor growth of treated solutions.

研究光电催化 (PEC) 降解污染物的挑战之一是找到合适的光阳极材料，这对工艺效率有重大影响。其中，基于有序 TiO ₂纳米管阵列的光电极由于良好的表面积和有效的电荷分离而成为一种很有前途的材料。为了提高该材料的 PEC 活性，使用 SILAR 方法通过 PbS 量子点 (QD)装饰 Ti/TiO ₂纳米管。PbS-Ti/TiO ₂ (0.0148 min ^-1 )的异环磷酰胺 (IF) 降解速率常数是Ti/TiO ₂ (0.0072 min ^-1）。我们的研究表明，使用由 3 个 SILAR 循环（PbS QD 尺寸主要为 2-4 nm）制成的IIIPbS-Ti/TiO ₂对药物的 PEC 降解效率最高。第 4 次和第 6 次 SILAR 循环导致 PbS 纳米颗粒在 Ti/TiO ₂表面聚集，并且将 IF PEC 降解速率分别降低至 0.0043 和 0.0033 min ^-1。PEC机制的研究表明，药物的降解主要是通过光生空穴和羟基自由基的活性。此外，鉴定出的药物中间体使得提出抗癌药物的降解途径成为可能，生态毒性试验表明处理溶液对Lemna 轻微生长没有抑制作用。