Lal Basant, Verma Ankit, Ahmed Jahangeer, Singh Arunima, Choon Kit Chan, Jasrotia Rohit, Lakshmaiya Natrayan, Mehra Varun, Kandwal Abhishek
School of Physics and Materials Science, Shoolini University, Solan, H.P., 173229, India.
Department of Chemistry, Institute of Applied Sciences and Humanities, GLA University, Mathura, 281406, India.
Sci Rep. 2025 Jan 7;15(1):1225. doi: 10.1038/s41598-024-84251-0.
The widespread discharge of organic dyes into the wastewater from various industrial processes has develop a major environmental apprehension in the modern world. To tackle such environmental issues, we are synthesizing a novel catalyst of composition, BaCoDyFeO (x = y = 0.02-0.06) using sol-gel auto-combustion (SGAC) for the photocatalytic eradication of malachite green dye (MGD). The fabricated sample show single-phase hexagonal structure. The hexagonal-shaped grains are seen in the field emission spectroscopy (FESEM) visuals of prepared hexaferrites. The oxidation states of every element present in the developed specimens are investigated using the X-ray photoelectron spectrophotometer scrutinized. The specific surface area (SSA) of the HF1 sample is 3.523 m/g, whereas the band gap values of co-doped barium hexaferrites are found within the range of 1.61 to 1.75 eV. The magnetic analysis of developed hexaferrites indicates that increasing the concentration of Dy and Co, raised in the saturation magnetization and declines in coercivity. The conducted photocatalytic evaluations reveal that the removal efficiencies of 89.85%, 91.12%, and 94.36% are obtained for the prepared HF1, HF2, and HF3 hexaferrites after 90 min of natural irradiation. Moreover, the capability for the reusability of the synthesized hexaferrites is assessed over a series of five consecutive experimental cycles. As a result, this research delves at potential applications of co-doped BaFeO hexaferrites in the photocatalytic eradication of MGD for environmental applications.
各种工业生产过程中有机染料大量排放到废水中，已成为现代世界主要的环境忧患。为解决此类环境问题，我们正在使用溶胶 - 凝胶自燃烧法（SGAC）合成一种新型成分的催化剂BaCoDyFeO（x = y = 0.02 - 0.06），用于光催化消除孔雀石绿染料（MGD）。制备的样品呈现单相六方结构。在制备的六铁氧体的场发射光谱（FESEM）图像中可以看到六边形晶粒。使用X射线光电子分光光度计研究了所制备样品中每种元素的氧化态。HF1样品的比表面积（SSA）为3.523 m²/g，而共掺杂钡铁氧体的带隙值在1.61至1.75 eV范围内。对所制备的六铁氧体进行的磁性分析表明，增加Dy和Co的浓度会使饱和磁化强度增加，矫顽力降低。所进行的光催化评估表明，制备的HF1、HF2和HF3六铁氧体在自然光照90分钟后，去除效率分别为89.85%、91.12%和94.36%。此外，通过连续五个实验循环评估了合成六铁氧体的可重复使用能力。因此，本研究深入探讨了共掺杂BaFeO六铁氧体在光催化消除MGD以用于环境应用方面的潜在应用。
