Investigate the use of visible light to improve photocatalytic degradation of organic pollutants in wastewater. Nitrogen-doped titania and molybdenum sulfide nanocomposites (NTM NCs) with different weight ratios of MoS₂ (1, 2, and 3 wt.%) synthesized by a solid state method applied to the photodegradation of methylene blue(MB) under visible light irradiation. The synthesized NTM composites were characterized by SEM, TEM, XRD, FT-IR, UV–Vis, DRS and PL spectroscopy. The results showed enhanced activity of NTM hybrid nanocrystals in oxidizing MB in water under visible light irradiation compared to pure TiO₂. The photocatalytic performance of NTM samples increased with MoS₂ content. The results show that the photodegradation efficiency of the TiO₂ compound improved from 13 to 82% in the presence of N-TiO₂ and to 99% in the presence of MoS₂ containing N-TiO₂, which is 7.61 times higher than that of TiO₂. Optical characterization results show enhanced nanocomposite absorption in the visible region with long lifetimes between e/h+ at optimal N-TiO₂/MoS₂ (NTM₂) ratio. Reusable experiments indicated that the prepared NTM NCs photocatalysts were stable during MB photodegradation and had practical applications for environmental remediation.

研究使用可见光改善废水中有机污染物的光催化降解。固相法合成的具有不同重量比（1、2和3 wt.%）MoS 2 的氮掺杂二氧化钛和硫化钼纳米复合材料（NTM NCs）应用于可见光照射下亚甲蓝（MB）的光_降解. 合成的 NTM 复合材料通过 SEM、TEM、XRD、FT-IR、UV-Vis、DRS 和 PL 光谱进行表征。结果表明，与纯 TiO ₂相比，NTM 杂化纳米晶体在可见光照射下氧化水中 MB 的活性增强。NTM 样品的光催化性能随着MoS ₂含量的增加而增加。结果表明，TiO _{2的光降解效率在N-TiO 2}存在下化合物从13％提高到82％，在含有N-TiO _{2的MoS 2存在下提高到99％，这是TiO 2}的7.61倍。_{光学表征结果表明，在最佳 N-TiO 2} /MoS ₂ (NTM ₂ ) 比率下，纳米复合材料在可见光区域的吸收增强，e/h+ 之间的寿命长。可重复使用的实验表明，所制备的 NTM NCs 光催化剂在 MB 光降解过程中是稳定的，并且在环境修复中具有实际应用价值。