作者：尚君；余健；舒德华；任文辉

第一作者单位：湖南大学土木工程学院

摘要：以自制的包覆有SiO₂的CoFe₂O₄磁性颗粒为载体,采用溶胶-凝胶法在其上覆盖掺杂有Co,N,P元素的TiO₂,制备出Co,N,P/TiO₂/SiO₂/CoFe₂O₄颗粒,用振动样品磁强计（VSM）、X射线衍射仪（XRD）、X射线光电子能谱分析仪（XPS）及扫描电子显微镜（SEM）对其磁性、晶型、元素及形貌组成进行表征。将Co,N,P/TiO₂/SiO₂/CoFe₂O₄颗粒作为粒子电极及光催化剂应用于罗丹明B的光电催化降解实验。结果表明:Co,N,P/TiO₂/SiO₂/CoFe₂O₄颗粒光电催化降解RhB的降解良好,反应40 min后RhB的去除率达91.02%,通过磁性分离其可以有效的分离回收再利用。

Abstract：A Co,N,P/TiO₂/SiO₂/CoFe2O₄composite was synthesized via a sol-gel method,where SiO2/CoFe2O4 represent a core shell magnetic particles consisting of cobalt ferrite and silica.The composite was characterized by vibrating sample magnetometer(VSM),X-ray diffraction (XRD),X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy (SEM).And the magnetic property,crystal form,element and morphology was analyzed as well.The composite if CO,N,P/TiO₂/SiO₂/CoFeO₄was used as particle electrodes and applied to the photoelectrocatalytic degradation of Rhodamine B (RhB).The results showed that after 40 minutes degradation,91.02% of RhB was degraded and the particles can be separated effectively by magnetic force.

基金：国家“十一五”水体污染与治理重大专项(2009ZX07423-004)；

关键词：光电催化;磁性粒子;TiO₂;罗丹明B;

DOI：10.16186/j.cnki.1673-9787.2018.01.011

分类号：O643.36