光催化
材料科学
微球
化学工程
纳米壳
涂层
降级(电信)
催化作用
辐照
表面改性
纳米颗粒
纳米技术
制作
有机化学
化学
替代医学
病理
核物理学
工程类
物理
电信
医学
计算机科学
作者
Kee-Bong Choi,Jee-Eun Min,So Yeong Park,Bong Joo Park,Jin‐Seung Jung
标识
DOI:10.1016/j.ceramint.2018.09.104
摘要
Heterogeneous Fe3O4@TiO2@Au core-shell microspheres, a facile and highly efficient catalyst have been fabricated by a simple surface modification. The fabrication process involved the coating of TiO2 nanoshell onto the magnetic core using by sol-gel process, and then the anchoring of Au nanoparticles onto the surface of the Fe3O4@TiO2 microspheres through the wet chemical reaction of 3-aminopropyltriethoxysilane (APTES). The as-synthesized Fe3O4@TiO2 microspheres exhibited a narrow size distribution, with a typical size of 350 nm and shell thickness of 25 nm. The Fe3O4@TiO2@Au microspheres can be easily collected by applying external magnetic field due to the magnetic property of core Fe3O4 particles. Compared to unmodified Fe3O4@TiO2 microspheres, the Fe3O4@TiO2@Au microspheres showed higher photocatalytic activity for 2, 4, 6-trichlorophenol (TCP). The photocatalytic efficiency of the Fe3O4@TiO2 microspheres was 28% after 40 min irradiation while, the efficiency of Fe3O4@TiO2@Au microspheres was 98% at the same condition.
科研通智能强力驱动
Strongly Powered by AbleSci AI