This investigation reports the synthesis and evaluation of a novel and improved diatomite modified with Fe–Mn binary oxide (DT-FeMn) Fenton catalysis for photochemical reactions in aqueous media. The catalyst was prepared by a co-precipitation process and found to be highly efficient for the photocatalytic degradation Rhodamine B (RhB). In comparison with the iron trioxide coating on diatomite (DT-Fe), the nanoparticles on the surface of the DT-FeMn contained multiple active sites. Experimental results indicated that there was a synergy between the Fe and Mn in the Fe–Mn binary oxide, which was the most important factor for the improved catalytic oxidation performance. The stability and reusability of the composite coating of the catalyst were also investigated by comparing the photocatalytic performance and the loss of Fe³⁺ ions. It was found that the synergy between the components of the Fe–Mn binary oxide coating enhanced the stability of Fe³⁺ ions, which prevented the loss of the Fe³⁺ ions. A maximum of 99.1% RhB was degraded after 80 min. This work might provide a novel Fenton material for pollutants removal in the presence of H₂O₂ to alleviate environmental pollution.

这项研究报告了合成和评估的新型和改进的硅藻土，用Fe-Mn二元氧化物（DT-FeMn）Fenton催化剂改性，用于水介质中的光化学反应。该催化剂是通过共沉淀法制备的，被发现对于光催化降解罗丹明B（RhB）非常有效。与硅藻土（DT-Fe）上的三氧化铁涂层相比，DT-FeMn表面的纳米颗粒包含多个活性位。实验结果表明，Fe-Mn二元氧化物中Fe和Mn之间存在协同作用，这是改善催化氧化性能的最重要因素。通过比较光催化性能和铁的损失，研究了催化剂复合涂层的稳定性和可重复使用性。³⁺离子。研究发现，Fe-Mn二元氧化物涂层组分之间的协同作用增强了Fe ³⁺离子的稳定性，从而防止了Fe ³⁺离子的损失。80分钟后最多降解99.1％的RhB。这项工作可能会提供一种新型的Fenton材料，用于在H ₂ O ₂存在下去除污染物，从而减轻环境污染。