ZnFe_2O_4/竹炭纳米复合材料的磁性能和吸附性能

Magnetic Properties and Adsorptive Performance of ZnFe_2O_4/BC Nanocomposites

通过水热法制备了ZnFe_2O_4/BC磁性纳米复合材料,用X射线衍射仪、热重-差热分析仪、振动样品磁强计对样品微观结构和磁性能进行表征,并用亚甲基蓝(MB)对样品的吸附行为进行研究。结果表明,制备的ZnFe_2O_4/BC纳米复合材料具有良好的磁响应,且都表现出明显的铁磁性,利用磁分离技术可以很容易从水中分离。此外,不同比例的ZnFe2O4/BC纳米复合材料对MB的吸附现象不同。随着ZnFe_2O_4掺杂比例的增加,饱和磁化强度(Ms)增大,吸附能力减弱。

ZnFe_2O_4/BC(Zn Fe_2O_4/bamboo charcoal) magnetic nanocomposites were synthesized by a hydrothermal methed, and then the microstructures and magnetic properties of BC and ZnFe_2O_4/BC were discussed by XRD, TGA and VSM. And the adsorptive performance of BC and ZnFe_2O_4/BC nanocomposites for organic dyes-methylene blue(MB) was studied. The results indicate that the prepared ZnFe_2O_4/BC nanocomposites present the excellent magnetic response, which could be easily separated from water by the magnetic separation technique. Saturation magnetization(Ms) of ZnFe_2O_4/BC nanocomposites increases with the increasing ZnFe_2O_4 content, while the adsorption performance decreases to some extent.