异质结型ZnFe_2O_4-TiO_2纳米管阵列复合光催化剂对盐酸四环素的光催化性能研究  

Photocatalytic Performance Study of TC by Heterojunction Zn Fe_2O_4/TiO_2 Nanotube Arrays

作　　者：欧阳科[1] 谢珊[1] 叶欣怡 柴晓晴 王海 韩昌福 

机构地区：[1]广东省五邑大学化学与环境工程学院,广东江门529020 [2]武汉市环境保护科学研究院,湖北武汉430015 [3]北京建筑大学,北京100044

出　　处：《水处理技术》2018年第1期38-41,共4页Technology of Water Treatment

基　　金：国家自然科学基金(51508420);广东省自然科学基金(2015A030313641);广东省自然科学基金(2017A030313319);广东省教育厅特色创新项目(2014KTSCX133);广东省高等学校优秀青年教师培养计划(3211700203);江门市科技计划(2014119);五邑大学青年科学基金项目(2014ZK03);广东省"千百十"人才培养计划项目(201406)

摘　　要：采用阳极氧化-浸渍法,制备了异质结型Zn Fe_2O_4-Ti O_2纳米管阵列复合光催化剂。通过扫描电镜(SEM)、X射线衍射(XRD)等分析方法对光催化剂进行了结构表征,并考察了在可见光照射条件下Zn Fe_2O_4-Ti O_2纳米管阵列对TC降解的光催化性能。结果表明,Zn Fe_2O_4-Ti O_2纳米管阵列能有效降解盐酸四环素(TC)。低浓度TC降解效果比高浓度好,酸性条件有利于光催化反应,投加适宜浓度的H_2O_2(10 mmol/L)时会和催化剂产生协同效果,H2O2浓度过低或过高,催化效果均下降。在20~40℃范围内,高温有利于提升催化反应速率。阴离子对催化效果有抑制作用,其中CO_3^(2-)的抑制作用最强。所制备的复合催化剂具有较好的实际应用价值。Heterojunction ZnFe2O4/TiO2 nanotube arrayswas prepared by anodization/impregnation method. The structure of the photocatalystwas characterized by scan electron microscopy （SEM） and X ray diffraction （XRD）techniques. The photocatalytic performance of TC degradation by ZnFe2O4/TiO2 nanotube arrays under visible light condition was investigated. The results showed that, ZnFe2O4/TiO2 nanotube arrays could degrade TC effectively, and low concentration of TC had better degradationefficiency than high concentration. Acidic condition had beneficial for photocatalytic reaction. Adding suitable concentration of H2O2 （10mmol/L） would have synergistic effect with photocatalyst, higher or lower concentration ofH2O2 could reduce the catalytic effect. High temperature had beneficial forcatalysis reactio.n rate within 20-40 ℃. Anions had an inhibitory effect oncatalytic effect, and CO32 had the strongest inhibiting effect. The prepared composite catalyst have great value on practice.

关 键 词：ZnFe2O4-TiO2纳米管阵列 光催化降解 盐酸四环素 水处理 

分 类 号：O643.36[理学—物理化学]