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采用改良的化学共沉淀法制备M n0.5Zn0.5F e2O4纳米磁性材料,用透射电镜、分析仪及热分析系统等进行表征及特性检测。将M n0.5Zn0.5F e2O4纳米粒子以及其不同浓度的磁流体置于200 KH z的交变磁场中照射,检测其磁感应自控加热作用;用M n0.5Zn0.5F e2O4浸渍液体外干预小鼠L 929成纤维细胞,通过检测细胞增值率来评价其细胞毒性。结果表明,制备的锰锌铁氧体纳米粒子为圆形,约40 nm,并经检索x-线粉末衍射图库证实;纳米锰锌铁氧体磁流体能磁感应加热而升温到40℃~51℃,且最终温度能稳定控制不变;纳米锰锌铁氧体浸渍液对细胞未见明显毒性作用。
The Mn0.5Zn0.5F e2O4 nanomaterials were prepared by a modified chemical coprecipitation method and characterized by transmission electron microscopy, analyzer and thermal analysis system. The Mn0.5Zn0.5F e2O4 nanoparticles and their different concentrations of magnetic fluid were placed in an alternating magnetic field of 200 KH z irradiated to detect the magnetic induction self-heating effect; with M n0.5Zn0.5F e2O4 immersed liquid outside the mouse L 929 fibroblasts, their cytotoxicity was evaluated by measuring cell proliferation rate. The results show that the prepared Mn-Zn ferrite nanoparticles are round, about 40 nm, and confirmed by the retrieved x-ray powder diffraction pattern library; the Mn-Zn ferrite magnetic fluid can be heated to 40-50 ° C by magnetic induction , And the final temperature can be steadily controlled unchanged; nano-manganese zinc ferrite immersion liquid no obvious toxic effects on the cells.