Titanate nanomaterials have been outstanding in the removal of emerging contaminants by the photocatalysis process. These photocatalysts, when modified through techniques such as doping with metals, they have advantages over TiO₂, especially in the region of visible light. In this work, the photocatalytic performance of four recent reported catalysts, pristine titanate nanowires, cobalt-doped titanate nanowires, iron-doped titanate nanowires and ruthenium-doped titanate nanowires, for the removal of the antidepressant trazodone under visible light radiation was compared. The iron-doped titanate nanowires presented the best catalytic activity by the catalyst surface area. Additionally, thirteen transformation products (TPs) were identified by high-resolution mass spectrometry and, to the best of our knowledge, nine of them have never been described in the literature. It was shown that for each catalyst different TPs were formed with distinct time profiles. Finally, toxicity assessment by computational methods showed that TPs were not readily biodegradable and they presented toxicity to aquatic organisms with mutagenic potential. These findings reinforce the importance of taking into consideration the TPs formed during the removal of pollutants since many of them may be toxic and can be produced during photocatalysis.

钛酸盐纳米材料在通过光催化过程去除新兴污染物方面表现突出。这些光催化剂通过金属掺杂等技术进行改性后，具有优于TiO _2的优势。，尤其是在可见光区域。在这项工作中，比较了四种最近报道的催化剂，原始钛酸酯纳米线，钴掺杂的钛酸酯纳米线，铁掺杂的钛酸酯纳米线和钌掺杂的钛酸酯纳米线的光催化性能，以在可见光辐射下去除抗抑郁药曲唑酮。掺杂铁的钛酸酯纳米线通过催化剂表面积表现出最佳的催化活性。此外，通过高分辨率质谱鉴定了13种转化产物（TP），据我们所知，其中9种从未在文献中描述过。结果表明，对于每种催化剂，形成具有不同时间分布的不同TP。最后，通过计算方法进行的毒性评估表明，总磷不易生物降解，并且对具有诱变潜力的水生生物具有毒性。这些发现加强了考虑去除污染物过程中形成的总磷的重要性，因为其中的许多总磷可能是有毒的，可以在光催化过程中产生。