摘要
用反相微乳液法制备了TiO2纳米粒子、Eu3+掺杂的TiO2纳米粒子及以Fe3O4为核以TiO2为包覆层的核壳型磁性复合纳米粒子,用电镜和X射线衍射研究了样品的形貌和晶体结构,并以甲基橙为目标降解物,研究了不同催化剂的光催化活性。结果表明,Eu3+的掺杂可以提高TiO2光催化剂的活性,核壳型磁性Eu3+-Fe3O4/TiO2纳米复合粒子能够回收重复利用,保持催化活性。
The nanoparticles of TiO2, TiO2 with Eu^3＋ doped and Core-shell Eu^3＋-Fe3O4/TiO2 were synthesized by microemulsion. The morphology and crystal structure were studied with microscope and XRD. The catalytic activity experiment was conduced through the degradation of methyl orange. It is shown that the activity of TiO2 photocata- lyst enhanced with Eu^3＋ doped. Core-shell Eu^3＋- Fe3O4/TiO2 nanocomposite can be separated and recycled using magnetism with relatively high activity.
出处
《当代化工》
CAS
2008年第3期234-237,共4页
Contemporary Chemical Industry
基金
北京科技大学基金(20060604390)
