Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
Chemosphere. 2022 Nov;306:135574. doi: 10.1016/j.chemosphere.2022.135574. Epub 2022 Jul 4.
Pristine and Mn-TiO photocatalysts was prepared employing sophisticated hydrothermal technique. TiO, 0.2 M, 0.4 M Mn-TiO photocatalysts analysis were done by using standard characterization studies. The morphology of the pure TiO photocatalyst showed the large agglomeration of nanoparticles. While the dopant Mn ions influenced higher on host lattice TiO. The 0.2 M Mn added TiO photocatalyst showed no agglomeration and nanoparticles size were decreased. On increasing dopant level, there is growth of nanorods along with nanoparticles which greatly helped in dye degradation. The prepared photocatalysts photocatalytic action was investigated on reducing MG dye. Prepared photocatalyst added dye mixtures were exposed under visible light and collected for every 15 min. 0.4 M Mn-TiO- MG sample showed 96% efficiency on degrading MG dye. The dopant has increased electrons and holes recombination on host surface. 0.4 M Mn-TiO-MG sample rate constant was higher than other samples and reaction system abide by Pseudo first order kinetics. 0.4 M Mn-TiO photocatalyst be an efficient and enthusiastic potential material to remove organic pollutants.
采用先进的水热技术制备了原始和 Mn-TiO 光催化剂。通过使用标准表征研究对 0.2M、0.4M Mn-TiO 光催化剂进行了分析。纯 TiO 光催化剂的形态显示出纳米颗粒的严重团聚。而掺杂 Mn 离子对宿主晶格 TiO 的影响更大。添加 0.2M Mn 的 TiO 光催化剂没有团聚，纳米颗粒尺寸减小。随着掺杂水平的增加，纳米棒与纳米颗粒一起生长，这极大地有助于染料降解。研究了制备的光催化剂在还原 MG 染料上的光催化作用。将制备的光催化剂加入染料混合物中，在可见光下暴露并每 15 分钟收集一次。0.4M Mn-TiO-MG 样品对 MG 染料的降解效率达到 96%。掺杂剂增加了电子和空穴在主表面上的复合。0.4M Mn-TiO-MG 样品的速率常数高于其他样品，反应体系遵循准一级动力学。0.4M Mn-TiO 光催化剂是一种高效、有前途的去除有机污染物的材料。
