WO3/ZnFe2O4纳米材料的构建及降解抗生素性能  

Construction of WO3/ZnFe2O4 Nanomaterials and Their Photocatalytic Performance for Antibiotic

作　　者：王颖捷 沈昱[1,2] 刘淑红 石津如[1] 王继博 刘碧娇 侯倩 WANG Yingjie;SHEN Yu;LIU Shuhong;SHI Jinru;WANG Jibo;LIU Bijiao;HOU Qian(School of Environmental and Chemical Engineering,Dalian Jiaotong University,Dalian 116028,China;Hubei Key Laboratory of Processing and Application of Catalytic materials,Huanggang Normal University,Huanggang 438000,China)

机构地区：[1]大连交通大学环境与化学工程学院,辽宁大连116028 [2]黄冈师范学院催化材料制备及应用湖北省重点实验室,湖北黄冈438000

出　　处：《大连交通大学学报》2019年第5期87-91,共5页Journal of Dalian Jiaotong University

基　　金：催化材料制备及应用湖北省重点实验室开放基金资助项目(201721303)

摘　　要：采用固相研磨法制备出WO3/ZnFe2O4纳米材料,利用现代仪器分析手段表征其结构和形貌.XRD分析表明:WO3/ZnFe2O4材料的各个衍射峰与WO3及ZnFe2O4的标准卡片一一对应,说明两种材料成功复合;SEM分析表明:WO3/ZnFe2O4复合材料为直径约200nm、长度约500nm的棒状微观形貌;FTIR分析表明:复合材料中含有W-O键、Zn-O键和Fe-O键三种金属-氧键的特征峰.以抗生素溶液作为目标污染物,考察了WO3/ZnFe2O4纳米复合材料的可见光光催化降解性能.实验结果表明:抗生素甲硝唑溶液的初始浓度为20mg/L,每100mL溶液中加入30mgWO3/ZnFe2O4催化剂,光催化反应150min后甲硝唑溶液的降解率为45.9%.当溶液的pH值为9左右时,甲硝唑的降解率达到87.1%.WO 3/ZnFe 2O 4 nanomaterials were prepared by solid state grinding method,and their structures and morphologies were characterized by modern analytical instruments.XRD analysis shows that the diffraction peaks of the WO 3/ZnFe 2O 4 materials matches well with the standard cards of WO 3 and ZnFe 2O 4,indicating that the two materials are successfully combined.SEM images indicate that the WO 3/ZnFe 2O 4 nanocomposites are rods with diameter and length of about 200 nm and 500 nm.From FTIR spectra,it can be found that the composites contain the characteristic peaks of metal-oxygen bonds including the W-O,Zn-O and Fe-O.The visible light induced photocatalytic performance of the WO 3/ZnFe 2O 4 was investigated using antibiotic solution as target pollutant.The experiment results show that the initial concentration of metronidazole solution is 20 mg/L with 30 mg of the WO 3/ZnFe 2O 4 catalyst in 100 mL solution,and the degradation rate of metronidazole is 45.9%after 150 minutes of photocatalytic reaction.When the pH of the solution is about 9,the degradation rate is increased to 87.1%.

关 键 词：WO3/ZnFe2O4 纳米材料 可见光催化 抗生素 甲硝唑 

分 类 号：TB3[一般工业技术—材料科学与工程]