期刊
APPLIED SURFACE SCIENCE
卷 607, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2022.154886
关键词
Fe-Laponite@diatomite; Methyl orange; Photo Fenton; Degradation; Hydroxyl radicals
A typical adsorption modification method was used to load ferrous ions onto the Laponite@diatomite composite, creating a catalyst with good photo-Fenton performance. The study found that the catalyst can effectively degrade cationic dyes under optimal reaction conditions, and exhibits structural stability and reusability.
A typical adsorption modification method was employed to load ferrous ions on the Laponite@diatomite composite with 3D-2D morphology for photo-Fenton. Further, various characterization analyses were performed on the microscopic morphology and structure of the modified Laponite@diatomite. The removal ability of ferrous ion-modified Laponite@diatomite (Fe-La@D) photo-Fenton-oxidative cationic dyes under different raw material concentrations, H2O2 content, MO concentration and light environment was discussed. Its reusability and photoFenton mechanism were further investigated. The study found that the ferrous ion-modified Laponite @diatomite is a catalyst with good photo-Fenton performance, and the MO degradation rate in 240 min can reach 99 % under the optimal reaction conditions. After modification, ferrous ions were successfully intercalated between the Laponite layers, and the forbidden band width of the material was reduced. And with the increase of catalyst dosage and H2O2 content, the photo-Fenton reaction rate also increases. While the initial concentration of MO increases, the reaction rate decreases accordingly. Cycling tests demonstrate the structural stability and reusability of the catalyst. EPR spectra showed the generation of hydroxyl radicals, which are important substances in the degradation process. This work provides an idea for the synthesis of economical and ideal photo-Fenton catalysts, which has broad application prospects.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据