以NiFe2O4为磁核、SiO2为中间层、十六烷基三甲基溴化铵为结构导向剂制备了具有介孔结构的TiO2/SiO2/Nife2O4光催化剂,并采用X射线衍射、透射电子显微镜、扫描电子显微镜、N2吸附.脱附和振动样品磁场计等手段对其进行了表征.以H2O2为氧化剂,在紫外光照射下,考察了TiO2/SiO2/NiFe2O4光催化降解硝基苯溶液的活性.结果表明,TiO2/SiO2/NiFe2O4催化剂具有明显的核-壳结构,平均粒径约为50nm,分布均匀,表现出超顺磁性,样品的孔径主要分布在1～5nm间,比表面积为56m2/g.催化剂作用150min内硝基苯完全降解,表明该光催化剂性质良好,并采用色谱.质谱联用技术研究了硝基苯光降解反应的途径.
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