TiO2-Fe3O4/MIL-101（Cr）磁性复合光催化材料的制备及其光催化性能

李小娟; 黄斌; 李小飞; 林振宇; 林春香; 刘以凡

doi:10.13801/j.cnki.fhclxb.20161018.007

TiO₂-Fe₃O₄/MIL-101（Cr）磁性复合光催化材料的制备及其光催化性能

doi: 10.13801/j.cnki.fhclxb.20161018.007

1.
福州大学环境与资源学院, 福州 350116;
2.
福州大学能源与环境光催化国家重点实验室, 福州 350002

基金项目: 国家自然科学基金（21407026）；福建省杰出青年科学基金（2014J06005）；福州大学能源与环境光催化国家重点实验室自主课题基金（2014B02）

详细信息

通讯作者:
李小娟,博士,副教授,研究方向为高效环境材料的制备与应用E-mail:lixiaojuan@fzu.edu.cn

中图分类号: TB331
计量
- 文章访问数: 640
- PDF下载量: 432
- 被引次数: 0
出版历程
- 收稿日期: 2016-08-22
- 修回日期: 2016-09-20
- 刊出日期: 2017-07-15

Preparation and photocatalytic activity of magneticTiO₂-Fe₃O₄/MIL-101(Cr) composites

1.
College of Environmental and Resource, Fuzhou University, Fuzhou 350116, China;
2.
State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China

摘要

摘要: 采用原位水热法合成了TiO₂-Fe₃O₄/MIL-101（Cr）磁性复合光催化材料，利用XRD、SEM、UV-Vis DRS、BET和磁学测量系统对复合光催化材料的结构和性能进行了表征，并以亚甲基蓝（MB）为模拟污染物，研究了该复合光催化材料的可见光催化活性，并考察了光催化材料的稳定性。结果表明：巯基官能化的Fe₃O₄和TiO₂与MIL-101（Cr）结合成功，复合后的TiO₂-Fe₃O₄/MIL-101（Cr）光催化材料的可见光响应范围得到明显拓宽；当TiO₂的添加量为400 mg时所制得的磁性复合光催化材料具有相对较好的光催化降解效果，经过120 min光照后，对MB的去除率高达80%；该磁性复合光催化材料具有良好的稳定性和磁分离性能。
- 磁性 /
- 金属有机骨架 /
- MIL-101（Cr） /
- TiO₂ /
- 光催化
Abstract: The magnetic TiO₂-Fe₃O₄/MIL(Material Institute Lavoisier)-101(Cr) composites were synthesized via in situ hydrothermal method. The structure and performance of composites were characterized by XRD, SEM, UV-Vis DRS, BET and superconducting magnet system. The photocatalytic activity of TiO₂-Fe₃O₄/MIL-101(Cr) composites were investigated by photocatalytic degradation of MB solution, and the stability of TiO₂-Fe₃O₄/MIL-101(Cr) composites was also studied. The results show that the thiohydroxy-modified-Fe₃O₄ and thiohydroxy-modified-TiO₂, can be successfully combined with MIL-101(Cr), and a notable absorption extension in the visible-light region can be observed for the TiO₂-Fe₃O₄/MIL-101(Cr) composites. The TiO₂-Fe₃O₄/MIL-101(Cr)(400) composite exhibits the highest photocatalytic activity, while the corresponding photodegradation efficiency for MB is 80% after 120 min irradiation. The TiO₂-Fe₃O₄/MIL-101(Cr) composites also have a good stability and can be easily separated from solution by an external magnet.
- magnetic /
- metal-organic frameworks /
- MIL-101(Cr) /
- TiO₂ /
- photocatalysis