稀土金属-氮共掺杂碳基催化剂制备与激活PMS降解RhB  

Preparation of rare earth metaland nitrogen co-doped carbon basedcatalysts and activating PMS to degrade Rhodamine B

作　　者：曲传健 万园园 王立昇 王小寒 吴震 郭立童[1,2] QU Chuanjian;WAN Yuanyuan;WANG Lisheng;WANG Xiaohan;WU Zhen;GUO Litong(School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China;Research Center for Recycling of Mineral Resource Waste,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学材料与物理学院,江苏徐州221116 [2]中国矿业大学矿产资源废弃物循环利用研究中心,江苏徐州221116

出　　处：《功能材料》2025年第4期4228-4236,共9页Journal of Functional Materials

基　　金：中国矿业大学省级大学生创新创业训练计划项目(202310290195Y)。

摘　　要：MOF材料因其微孔结构、孔隙率高等优势在许多领域具有广阔的应用前景。本工作通过高温煅烧MOF前驱体材料合成了MOF衍生的多元稀土金属、N共掺杂的碳基催化剂,以RhB为目标污染物,考察其对过一硫酸盐活化的催化性能。结果表明,以MOF为前驱体制备出Fe、Co、Sm、N均匀共掺杂的多孔碳基催化剂,其比表面积达到226 m^(2)/g,平均孔径约3 nm;反应10 min,0.042 g/L FeCoNiSm活化1mmol/L PMS可100%去除水中的罗丹明B(100 mg/L);通过计算,推断出该反应体系为扩散控制反应;自由基淬灭反应结果表明^(1)O_(2)在体系中占据主导地位,FFA淬灭剂对体系降解率的影响率达到93.80%。MOF materials have a broad application prospect in many fields due to their microporous structure and high porosity.In the present work,multivariate rare-earth metal and N co-doped carbon-based catalysts were synthesized by high-temperature calcination of MOF precursor materials,and their catalytic performance for permonosulphate activation was investigated by using RhB as the target pollutant.The results showed that the porous carbon-based catalysts with uniform co-doping of Fe,Co,Sm,and N were prepared by using MOF as the precursor.And their specific surface area reached 226 m^(2)/g,with an average pore size of about 3 nm.The RhB pollutant in water(100 mg/L)can be 100%removed in 10 min with 1 mmol/L PMS and 0.042 g/L FeCoNiSm catalyst.And through calculation,it could be concluded that the reaction system was deduced to be a diffusion-controlled reaction.Based on the free radical quenching reaction results,it could be concluded that ^(1)O_(2)dominated the system with a contribution of 93.80%to the system.

关 键 词：金属有机骨架 过一硫酸盐 污水处理 降解机理 单线态氧 

分 类 号：X703[环境科学与工程—环境工程]