化工进展2025，Vol.44Issue(3)：1683-1694,12.DOI:10.16085/j.issn.1000-6613.2024-0357
ZnO促进多级孔ZIF-8衍生Co-Ni-N-C活化PMS降解水中左氧氟沙星
ZnO promotes the degradation of levofloxacin in water by hierarchical porous ZIF-8 derived Co-Ni-N-C activated PMS
摘要
Abstract
As a typical microporous material,ZIF-8(zeolitic imidazolate framework-8)has a single pore structure and limited metal loading,which affects its catalytic degradation performance.The addition of ZnO as a template can effectively adjust the pore size and pore structure of ZIF-8,and has the characteristics of large specific surface area,high metal loading and rich pore structure.The morphology,chemical composition and bimetallic loading of the materials were analyzed in detail by means of SEM,ICP-OES and BET.The characterization test results showed that in the hierarchical porous(micro/mesoporous)Co-Ni-N-C material derived from the addition of ZnO template,the double metal elements were highly dispersed,not easy to agglomerate,and contained abundant active sites.The results of degradation experiments indicated that the degradation rate of levofloxacin(LEV)could reach 97.02%at t=30min when the dosage of Co-Ni-N-C and peroxonosulfate(PMS)was 0.30g/L and pH=9.In the Co-Ni-N-C/PMS catalytic system,the active species such as hydroxyl radical(·OH),sulfate radical(·SO4-),superoxide radical(·O2-)and singlet oxygen(1O2)produced by the catalytic system reacted with LEV in water,resulting in the decomposition or conversion of LEV into other substances,making it a smaller molecule or harmless compound.关键词
沸石咪唑框架-8/ZnO模板/过氧单硫酸盐/多级孔结构/左氧氟沙星Key words
ZIF-8/ZnO template/peroxonosulfate/multi stage pore structure/levofloxacin分类
资源环境引用本文复制引用
景凌云,杨辉,刘莎莎,张泽强,刘光龙,蒋莉,孙志丽,胡叶强,郝鹏波,郑银琴..ZnO促进多级孔ZIF-8衍生Co-Ni-N-C活化PMS降解水中左氧氟沙星[J].化工进展,2025,44(3):1683-1694,12.基金项目
甘肃省自然科学基金(22JR5RA256) （22JR5RA256）
国家自然科学基金(22166023). （22166023）
