Department of Physics, Queen Mary's College, Chennai 600 004, India.
Department of Physics, Queen Mary's College, Chennai 600 004, India.
J Photochem Photobiol B. 2017 Aug;173:43-49. doi: 10.1016/j.jphotobiol.2017.05.027. Epub 2017 May 20.
The progress of the enriched photocatalytic degradation predominantly depends on materials fabrication. In the recent times, the outcomes of nanomaterials show extraordinary efficiency due to its shape and size. In this connection, the present work concentrates on the fabrication of single digit metal oxides (CeO, CuO, NiO, MnO, SnO and ZnO) through precipitation method. The structural information of different metal oxides (MOs) and their crystallite size were estimated via XRD analysis and their consistent results revealed that the crystalline sizes of the prepared metal oxide were exhibited in nano size. The morphology and dimension of the synthesized MOs were identified through FE-SEM and TEM techniques. The FE-SEM images were apparently defined that the actual morphology of each metal oxide expresses different dimension due to nucleation and growth process. The result of UV-vis absorption spectra was helped to identify the band gap of MOs and a suitable light for photocatalytic irradiation. Additionally, the synthesized single digit MOs nanoparticles were magnificently applied for the degradation of methyl orange and methylene blue under UV light irradiation.
富光催化降解的进展主要取决于材料的制备。在最近的一段时间里,纳米材料的研究结果因其形状和尺寸而显示出非凡的效率。在这方面,本工作集中于通过沉淀法制备单金属氧化物(CeO、CuO、NiO、MnO、SnO 和 ZnO)。通过 XRD 分析对不同金属氧化物(MOs)的结构信息及其晶粒尺寸进行了估算,其一致的结果表明,所制备的金属氧化物的结晶度呈现出纳米级。通过 FE-SEM 和 TEM 技术确定了合成 MOs 的形态和尺寸。FE-SEM 图像清楚地表明,由于成核和生长过程,每种金属氧化物的实际形态表现出不同的维度。UV-vis 吸收光谱的结果有助于确定 MOs 的带隙和适合光催化辐照的光。此外,在紫外光照射下,合成的单金属 MOs 纳米粒子成功地应用于甲基橙和亚甲基蓝的降解。