| 可见光响应的铁掺杂TiO2中空微球的制备及其光催化性能 |
| Synthesis and Photocatalytic Activity of Visible-Light-Sensitive Fe Doped TiO2 Hollow Microspheres |
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| 摘要: 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。 |
| 关键词: 二氧化钛 掺铁 中空微球 可见光响应 |
| 基金项目: |
| Abstract: 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. |
| Keywords: titania hollow microsphere visible-light-sensitive photocatalyst Fe doping |
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| 常 琳,刘晶冰,王金淑,张文熊.可见光响应的铁掺杂TiO2中空微球的制备及其光催化性能[J].无机化学学报,2010,26(5):744-748. |
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