Sebah Imane, Belmouden Moustapha
Laboratory of Organic Chemistry and Physical Chemistry (Molecular Modeling and Environment), Faculty of Sciences, University Ibn Zohr Agadir Morocco
Nanoscale Adv. 2025 Aug 11. doi: 10.1039/d5na00409h.
In this study, a magnetic nanocomposite of copper ferrite (CuFeO) supported on reduced graphene oxide (rGO) was synthesized a solvothermal method and applied as a catalyst for the activation of peroxymonosulfate (PMS) to degrade Orange G (OG) dye in aqueous solution. The structure and morphology of the catalyst were thoroughly characterized using XRD, FTIR, SEM, STEM, and nitrogen adsorption-desorption analyses. The rGO/CuFeO composite demonstrated superior catalytic performance, achieving 90.8% OG removal within 60 minutes, attributed to its enhanced surface area, efficient radical generation, and strong interaction between rGO and CuFeO. The system exhibited high activity across a wide pH range, significant mineralization (78% TOC removal), and good recyclability over four cycles. The catalyst also effectively degraded other dyes including rhodamine B (78%), methylene blue (86%), and methyl orange (89%) under similar conditions. These findings suggest that rGO/CuFeO is a promising, reusable catalyst for advanced oxidation processes in wastewater treatment.
在本研究中，采用溶剂热法合成了负载在还原氧化石墨烯（rGO）上的铜铁氧体（CuFeO）磁性纳米复合材料，并将其用作催化剂来活化过一硫酸盐（PMS），以降解水溶液中的橙黄G（OG）染料。使用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、扫描透射电子显微镜（STEM）和氮吸附-脱附分析等方法对催化剂的结构和形貌进行了全面表征。rGO/CuFeO复合材料表现出优异的催化性能，在60分钟内实现了90.8%的OG去除率，这归因于其增大的表面积、高效的自由基生成以及rGO与CuFeO之间的强相互作用。该体系在较宽的pH范围内表现出高活性、显著的矿化效果（78%的总有机碳去除率）以及在四个循环内良好的可重复使用性。在类似条件下，该催化剂还能有效降解其他染料，包括罗丹明B（78%）、亚甲基蓝（86%）和甲基橙（89%）。这些研究结果表明，rGO/CuFeO是一种用于废水处理中高级氧化过程的有前景的可重复使用催化剂。
