Aliannezhadi Maryam, Doost Mohamadi Farnaz, Jamali Mohaddeseh, Shariatmadar Tehrani Fatemeh
Faculty of Physics, Semnan University, PO Box: 35195-363, Semnan, Iran.
Sci Rep. 2025 Mar 17;15(1):9224. doi: 10.1038/s41598-025-93903-8.
Nanomaterials including zinc oxide (ZnO) and non-stoichiometric (WO) tungsten oxide can be applied to solve the challenge related to optical properties of nanomaterials like global problems related to water treatment. Therefore, successful syntheses of zinc oxide-tungsten oxide nanocomposites and ZnWO nanostructures are reported by hydrothermal method and using different masses of green synthesized ZnO nanoparticles (NPs). The nanostructures are pure and only zinc, tungsten, and oxygen elements are observed in the synthesized samples. Alterations of green synthesized ZnO NPs mass used in the nanocomposite synthesis process influence the nanocomposites' structural, morphological, and optical properties. Different morphologies including nanorods, nanofibers, cabbage-like structures, short nanorods, and nanoflakes are formed using different masses of the used ZnO NPs. The photocatalytic activities of the nanocomposites are evaluated by removing methylene blue (MB- 10 ppm) under UV irradiation in the neutral (pH = 7) and acidic (pH = 5) solutions. Interestingly, 10 mg of ZW0.05 nanocomposite demonstrates the excellent deterioration of MB with efficiencies of 99% and 91% within 170 min in the neutral and acidic solutions, respectively. Furthermore, the quantity of catalyst was reduced to 5 mg, demonstrating the capacity to degrade 87% (94%) of MB at pH = 7 (pH = 5). Therefore, one of the synthesized nanocomposites can be an excellent candidate for water treatment even in acidic condition.
包括氧化锌（ZnO）和非化学计量比的氧化钨（WO）在内的纳米材料可用于解决与纳米材料光学性质相关的挑战，如与水处理相关的全球性问题。因此，通过水热法并使用不同质量的绿色合成氧化锌纳米颗粒（NPs），成功报道了氧化锌-氧化钨纳米复合材料和ZnWO纳米结构的合成。这些纳米结构是纯净的，在合成样品中仅观察到锌、钨和氧元素。纳米复合材料合成过程中使用的绿色合成氧化锌纳米颗粒质量的变化会影响纳米复合材料的结构、形态和光学性质。使用不同质量的氧化锌纳米颗粒会形成不同的形态，包括纳米棒、纳米纤维、白菜状结构、短纳米棒和纳米薄片。通过在中性（pH = 7）和酸性（pH = 5）溶液中紫外光照射下去除亚甲基蓝（MB - 10 ppm）来评估纳米复合材料的光催化活性。有趣的是，10 mg的ZW0.05纳米复合材料在中性和酸性溶液中分别在170分钟内对MB的降解效率高达99%和91%，表现出优异的降解效果。此外，催化剂用量减少到5 mg时，在pH = 7（pH = 5）时仍能降解87%（94%）的MB。因此，即使在酸性条件下，合成的纳米复合材料之一也可能是水处理的极佳候选材料。
