摘要：

制备了核壳式Fe₃O₄@TiO₂-膨胀石墨光催化剂，考察了其吸附及光催化性能。实验结果表明：锐钛矿型TiO₂对Fe₃O₄进行了有效包覆，并均匀地沉积在膨胀石墨的表面及沟壑中，制备的样品具有超顺磁性。核壳式改性Fe₃O₄@TiO₂-膨胀石墨的比饱和磁化强度为28.3 emu/g，对苯酚的吸附率可达20.1%，降解率为72.1%。

关键词: 四氧化三铁, 二氧化钛, 膨胀石墨, 光催化活性

Abstract:

The core-shell particle Fe₃O₄@TiO₂-expanded graphite has successfully been prepared. The adsorption and photo-catalytic capacities of it are investigated. The results show that the Fe₃O₄ particles are coated with anatase titanium dioxide effectively and deposited equally on the surface and gully of the prepared composite material,showing super paramagnetic characteristics. The saturation and magnetization strength of the modified core-shell particle Fe₃O₄@TiO₂-expanded graphite is 28.3 emu/g,the adsorption rate for phenol can reach 20.1%,and the degradation rate of phenol 72.1%.

Key words: Fe₃O₄, TiO₂, expanded graphite, photocatalytic activity

中图分类号: 

• X703.5