In this study, a nanostructured CeVO₄ material was synthesized using a simple co-precipitation technique and investigated as a catalyst for phenol degradation via peroxymonosulfate (PMS) activation. The structural and morphological properties of the CeVO₄ catalyst were characterized using XRD, XPS, FTIR, Raman spectroscopy, TGA, SEM, and TEM. The results indicated that the prepared catalyst exhibited a pure crystalline phase with a rod-like structure. The CeVO₄ catalyst exhibited high activity towards PMS activation, resulting in complete degradation of phenol within the first 80 min at room temperature. The degradation reaction was found to follow pseudo-first-order kinetics with a low activation energy of 23.74 kJ/mol. The degradation followed a catalytic surface-mediated electron transfer route as confirmed using ESR measurements. The effects of several experimental parameters on phenol degradation were investigated, including the catalyst loading, initial phenol concentration, PMS dosage, reaction temperature, and pH. The regeneration and reusability of the CeVO₄ catalyst were also examined for 5 consecutive cycles. This study puts forward CeVO₄ as a heterogeneous catalyst for the complete removal of persistent organic pollutants via PMS activation, indicating a favorable application in wastewater treatment.

在这项研究中，使用简单的共沉淀技术合成了纳米结构的CeVO ₄材料，并研究了其作为通过过一硫酸盐（PMS）活化进行苯酚降解的催化剂。用XRD，XPS，FTIR，拉曼光谱，TGA，SEM和TEM对CeVO ₄催化剂的结构和形貌进行了表征。结果表明，所制备的催化剂表现出具有棒状结构的纯结晶相。CeVO ₄催化剂对PMS活化表现出高活性，导致室温下前80分钟内苯酚完全降解。发现该降解反应遵循伪一级反应动力学，活化能为23.74 kJ / mol。降解遵循催化表面介导的电子转移路线，如使用ESR测量所证实的。研究了几种实验参数对苯酚降解的影响，包括催化剂负载量，初始苯酚浓度，PMS用量，反应温度和pH。还连续5个循环检查了CeVO ₄催化剂的再生和可重复使用性。这项研究提出了CeVO ₄ 作为通过PMS活化完全去除持久性有机污染物的非均相催化剂，表明在废水处理中具有良好的应用前景。