金属有机框架聚丙烯复合材料制备及降解印染废水研究  

Preparation of metal-organic framework polypropylene composites and degradation of printing and dyeing wastewater

作　　者：施飞 杨雪 苏静[1,2,3] 王鸿博 SHI Fei;YANG Xue;SU Jing;WANG Hongbo(College of Textile Science and Engineering,Jiangnan University,Wuxi 214122,China;Jiangsu Engineering Technology Research Center for Functional Textiles,Wuxi 214122,China;Key Laboratory of Eco-textiles,Ministry of Education,Wuxi 214122,China)

机构地区：[1]江南大学纺织科学与工程学院,江苏无锡214122 [2]江苏省功能纺织品工程技术研究中心,江苏无锡214122 [3]生态纺织教育部重点实验室,江苏无锡214122

出　　处：《工业水处理》2024年第5期101-110,共10页Industrial Water Treatment

基　　金：国家自然科学基金项目(52003108);中国博士后科学基金资助项目(2022M721359);中央高校基本科研业务费专项资金资助项目(JUSRP121027)。

摘　　要：金属有机框架(MOFs)作为非均相Fenton氧化法催化剂,在处理印染废水时难以多次利用、易引起二次污染。为解决此问题,通过多酚杂化网络涂层对聚丙烯熔喷无纺布(PP)表面进行改性,使其具有优异的黏附性和二次反应性,并在其表面原位生长MIL-88B(Fe)晶体,制备出金属有机框架聚丙烯熔喷复合材料(TA-APTES@MOF@PP)。利用亚甲基蓝染料(MB)作为目标污染物,测试复合材料的催化降解效果及回收利用性能,经单因素优化实验确定催化剂投放比例及最佳反应条件。结果表明,当染液pH为3,H_(2)O_(2)浓度为50 mmol/L时,TA-APTES@MOF@PP(MOF负载量为20 mg)在黑暗条件下对MB的降解效果在3 h时最佳,降解率达到95.3%。复合材料无二次污染、方便回收,有较好的稳定性、耐酸碱性,在染液pH为2~11范围内均具有催化效果,5次循环使用后3 h时MB的降解率仍在73.4%以上。该复合材料在印染废水处理和水环境治理领域具有广阔的应用前景。Metal organic frameworks(MOFs),as non-homogeneous Fenton oxidation catalysts,are difficult to be utilized multiple times and prone to secondary pollution in the treatment of printing and dyeing wastewater.To solve this problem,metal organic framework polypropylene melt blown composites(TA-APTES@MOF@PP) were prepared by modifying the surface of polypropylene melt blown nonwoven(PP) with polyphenol heterogeneous network coating,which resulted in excellent adhesion and secondary reactivity,and by in situ growth of MIL-88B(Fe) crystals on its surface.The catalytic degradation effect and recycling performance of the composites were tested with methylene blue dye(MB) as the target pollutant,and the catalyst delivery ratio and optimal reaction conditions were determined by single-factor optimization.The results showed that the degradation of MB by TA-APTES@MOF@PP(MOF 20 mg) under dark conditions was optimal at 3 h with a degradation rate of 95.3% when the pH of dye solution was 3 and the H_(2)O_(2) concentration was 50 mmol/L.The composite material has no secondary pollution,easy to recycle,good stability,acid and alkali resistance,catalytic effect in the pH range of 2-11 of dying solution,and the 3 h degradation rate was still above 73.4% after 5 cycles.The composite material had a broad application prospect in printing and dyeing wastewater treatment and water environment management.

关 键 词：金属有机框架 聚丙烯熔喷布 FENTON氧化 印染废水 

分 类 号：X703.1[环境科学与工程—环境工程]