Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
Environ Res. 2021 Jun;197:111073. doi: 10.1016/j.envres.2021.111073. Epub 2021 Mar 24.
Waste water remediation is the ongoing hot research topic that can reduce the water scarcity all over the world. By reducing the pollutants in the waste water drawn from industries and other sources will be more useful for domestic purposes. To reduce the rate of pollutants in water may also help in improving the aquatic environment and decreases other side effects. Efficient and cost effective catalysts were in search for both dye degradation and water remediation treatment applications. NiMoO nanorods were prepared by employing co-precipitation method with different stirrer time (2 h, 4 h and 6 h). The formation of NiMoO was substantiated employing X-ray diffractometer analysis (XRD). Vibrational and rotational property of the samples was analyzed by FT-IR spectra and Raman spectra. The optical property was further confirmed by UV-vis spectral studies. Morphological analysis studies revealed growth of nanorods with 6 h stirrer time. The photocatalytic behavior of the obtained product was carried out under both UV light (364 nm) and visible light irradiation. The samples subjected to visible light environment showed better efficiency on degrading the methylene blue (MB) dye. The efficiency obtained under UV irradiation were 20%, 31%, 33%, 41% and efficiency obtained in visible light irradiation were 27%, 42%, 46%, 55% with respect to bare methylene blue (MB), MB with NiMoO (2 h), MB with NiMoO (4 h), MB with NiMoO (6 h) catalyst added. NiMoO sample with 6 h stirrer time and fine nanorods growth will be the good candidate for future use.
废水修复是目前热门的研究课题，可以减少全世界的水资源短缺。通过减少从工业和其他来源提取的废水中的污染物，将更有利于家庭用途。减少水中污染物的含量也有助于改善水生环境，减少其他副作用。高效且具有成本效益的催化剂是染料降解和水修复处理应用的研究重点。采用共沉淀法制备了 NiMoO 纳米棒，不同的搅拌时间（2 h、4 h 和 6 h）。通过 X 射线衍射仪分析（XRD）证实了 NiMoO 的形成。通过傅里叶变换红外光谱（FT-IR）和拉曼光谱分析了样品的振动和旋转特性。通过紫外可见光谱研究进一步证实了光学性质。形貌分析研究表明，在 6 h 搅拌时间下生长出纳米棒。在紫外光（364nm）和可见光照射下进行了所得产物的光催化行为研究。在可见光环境下处理的样品在降解亚甲基蓝（MB）染料方面表现出更好的效率。在紫外光照射下，裸亚甲基蓝（MB）、加入 NiMoO（2 h）的 MB、加入 NiMoO（4 h）的 MB 和加入 NiMoO（6 h）的 MB 的效率分别为 20%、31%、33%和 41%，而在可见光照射下，效率分别为 27%、42%、46%和 55%。6 h 搅拌时间和细纳米棒生长的 NiMoO 样品将是未来应用的良好候选材料。
