基于MIL-101制备“四角星形”零价铁@碳及其性能研究  

Preparation of “Four-angle Star-shaped” zero-valent iron@carbonbased on MIL-101 and its performance

作　　者：宋谦 廖立[1] 何汶轩 王薇菁 赖雪飞[1] 龙沁[1] 邓怡[1] SONG Qian;LIAO Li;HE Wen-xuan;WANG Wei-jing;LAI Xue-fei;LONG Qin;DENG Yi(School of Chemical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《应用化工》2023年第11期3053-3056,共4页Applied Chemical Industry

基　　金：四川省科技厅重点研发项目(2023YFG0248,2019YFG0261)。

摘　　要：以铁基金属有机框架材料MIL-101(Fe)作为前驱体,采用“刻蚀-碳化-还原”策略制备了一种新型的“四角星形”零价铁@碳磁性纳米复合材料(FS-nZVI@C),并选择水体中具有代表性的有机污染物亚甲基蓝作为降解对象,研究其降解有机物的性能。结果表明,制备的FS-nZVI@C具有“四角星”形貌,平均粒径约为500 nm,内核为nZVI,核外包覆的碳既可以改善材料的分散性,又可以有效抑制nZVI被氧化。对亚甲基蓝(10 mg/L)的降解率达到近100%只需5 min(用量1 g/L),在室温下空气环境中,放置8 d后对亚甲基蓝的降解率仍可保持在80%以上。A novel magnetic nanocomposite material with a shape of four-angle star(FS-nZVI@C)was synthesized by utilizing the iron-based metal-organic framework material MIL-101 as a precursor.Furthermore,Methylene blue(MB)was employed to investigate the reductive degradation of organic contaminants.The results suggested that the four-angle star-shaped FS-nZVI@C with a mean diameter of 500 nm was covered by carbon,which benefited to improve the dispersity and inhibits the oxidation of nZVI,the degradation rate of methylene blue reached nearly 100%in only 5 mins(amount 1 g/L),in the air environment at room temperature,after 8 h of placement,the degradation rate of methylene blue was recognized to remain above 80%.

关 键 词：MIL-101(Fe) 零价铁@碳 四角星形 有机污染物降解 

分 类 号：TQ031.6[化学工程] X52[环境科学与工程—环境工程]