磁性TiO_(2)/MIL-125(Ti)的制备及其处理甲硝唑探究  

Preparation of magnetic TiO_(2)/MIL-125(Ti)for metronidazole removal

作　　者：陈彰旭 孟凡莉 陈冰冰 杨惠旗 赵薇 蔡晓琪 CHEN Zhangxu;MENG Fanli;CHEN Bingbing;YANG Huiqi;ZHAO Wei;CAI Xiaoqi(College of Environmental and Biological Engineering,Putian University,Putian 351100;Fujian Provincial Key Laboratory of Ecology-Toxicological Effects&Control for Emerging Contaminants,Putian 351100;Key Laboratory of Ecological Environment and Information Atlas,Fujian Provincial University,Putian 351100)

机构地区：[1]莆田学院环境与生物工程学院,莆田351100 [2]福建省新型污染物生态毒理效应与控制重点实验室,莆田351100 [3]福建省高校生态环境及其信息图谱重点实验室,莆田351100

出　　处：《环境科学学报》2024年第6期93-100,共8页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.51778598,41771272);福建省自然科学基金(No.2022J011163,2017J01590,2017J01710,2018J01510);福建省科技特派员资金项目(No.F2022KTP062,F2023KTP064,ZF2024KTP0);2021、2022年莆田市科技特派员资金项目;莆田学院2024年度研究生科研项目(No.yjs2024020)。

摘　　要：为了解决水体中甲硝唑污染问题,以Fe_(3)O_(4)为磁性载体、TiO_(2)和MIL-125(Ti)为光催化剂载体,通过水热法合成一系列不同配比的磁性TiO_(2)/MIL-125(Ti)复合材料.利用正交试验法探究该复合材料对甲硝唑的处理效果,结果表明,甲硝唑的最佳去除条件为:光照时间为72 h,Fe_(3)O_(4)/TiO_(2)/MIL-125(Ti)配比为10∶1∶30,复合材料的投加量为0.05 g,甲硝唑的初始浓度为50 mg·L^(-1)时,去除率高达98.45%.经5次循环试验后,甲硝唑的去除率仍维持在90.32%.这项研究表明磁性TiO_(2)/MIL-125(Ti)复合材料能高效去除甲硝唑,有望为处理其他有机污染物提供借鉴.To address metronidazole contamination in water bodies,a series of magnetic TiO_(2)/MIL-125(Ti)composites with varying ratios were synthesized using Fe_(3)O_(4) as the magnetic carrier,and TiO_(2) and MIL-125(Ti)as the photocatalyst carriers via a hydrothermal method.The treatment efficacy of the composite material towards metronidazole was investigated using the orthogonal test method.Results showed that the optimum conditions were achieved with a photolysis duration of 72 h,Fe_(3)O_(4)/TiO_(2)/MIL-125(Ti)ratio of 10∶1∶30,the composite dosage of 0.05 g,and an initial concentration of metronidazole at 50 mg·L^(-1),resulting in a removal efficiency as high as 98.45%.Even after five cycles of testing,the removal rate of metronidazole remained at 90.32%.This work underscores the remarkable efficiency of magnetic TiO_(2)/MIL-125(Ti)composite materials in metronidazole removal,offering promising insights for the treatment of other organic pollutants.

关 键 词：磁性 TiO_(2) MIL-125(Ti) 光催化 吸附 甲硝唑 

分 类 号：X703[环境科学与工程—环境工程]