La3+掺杂TiO2纳米纤维的制备、表征与光催化性能

材料导报, 2010, 24(12): 5-8.

La3+掺杂TiO2纳米纤维的制备、表征与光催化性能

吴宁 ^1, , 魏取福 ^2, , 焦亚男 ^3, , 高大伟 ^4,

1.天津工业大学复合材料研究所天津市和教育部共建先进纺织复合材料重点实验室,天津,300160;江南大学生态纺织教育部重点实验室,无锡,214122

2.江南大学生态纺织教育部重点实验室,无锡,214122

3.天津工业大学复合材料研究所天津市和教育部共建先进纺织复合材料重点实验室,天津,300160

4.江南大学生态纺织教育部重点实验室,无锡,214122

基金项目: 教育部科学技术研究重点项目(106089) 教育部新世纪优秀人才支持计划项目(NCET-06-0485)

关键词： La3+掺杂 , TiO2纳米纤维 , 形貌 , 晶型 , 比表面积 , 孔隙率 , 光催化

The Preparation, Characterization and Photocatalysis Properties of La3+ Doped TiO2 Nanofibers

结合溶胶-凝胶法、静电纺丝技术和高温煅烧制备了La3+掺杂TiO2纳米纤维.采用扫描电子显微镜、X射线能谱仪、比表面积及孔隙分析仪、X射线衍射仪和紫外分光光度计对纳米纤维的形貌、晶型、表面和孔隙结构以及光催化性能进行了表征和测试.结果表明,La3+掺杂TiO2纳米纤维表面为多孔的纤维状结构.La3+掺杂明显改善了TiO2纳米纤维的表面孔隙结构,对TiO2纳米纤维的粒子生长有一定的抑制作用.光催化降解性能测试结果表明,当La3+掺杂量为0.04%(质量分数)时,TiO2纳米纤维的光催化性能最佳.

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