CAJ | 학술논문

以聚苯乙烯微球作为模板,水溶性过氧化钛配合物作为前驱体一步合成了掺铁TiO2中空微球,并利用XRD,SEM,TEM,XPS,UV-Vis等测试手段对样品进行了表征.结果表明,一步法制备的掺铁TiO2中空微球以锐钛矿相存在且具有良好的中空结构,掺杂少量铁到体系中,改变了其电子结构,使其吸收波长拓展到可见光区.光催化降解亚甲基蓝溶液的结果表明,掺杂0.75%铁的TiO2中空微球表现出更好的光催化性能.对Fe3+影响光催化活性的机理进行了讨论.
이취분을희미구작위모판,수용성과양화태배합물작위전구체일보합성료참철TiO2중공미구,병이용XRD,SEM,TEM,XPS,UV-Vis등측시수단대양품진행료표정.결과표명,일보법제비적참철TiO2중공미구이예태광상존재차구유량호적중공결구,참잡소량철도체계중,개변료기전자결구,사기흡수파장탁전도가견광구.광최화강해아갑기람용액적결과표명,참잡0.75%철적TiO2중공미구표현출경호적광최화성능.대Fe3+영향광최화활성적궤리진행료토론.
Fe-doped TiO2 microspheres with hollow interiors were prepared using polystyrene latex particles as the template and peroxo-titanium complex as the precursor. The resulting samples are characterized by XRD, SEM,TEM, XPS and UV-Vis. The results reveal that the Fe-doped TiO2 hollow microspheres show pure anatase phase and have a good hollow structure. When adding a concentration of Fe into the system, the electronic structures changed and obviously enhance the absorption in the visible light region. TiO2 hollow microspheres with 0.75% Fe dosage exhibited the superior photocatalytic activity for the decomposition of methylene blue under visible-light irradiation.The possible photocatalytic mechanism is proposed.