摘要
采用化学共沉淀结合水热处理的方法,控制一定的反应条件,制备了微波肿瘤靶向热治疗用碳纳米管/四氧化三铁(CNTs/Fe3O4)热种子材料,并对所得的复合材料进行了相应的检测。实验结果表明:Fe3O4纳米小粒子在CNTs的表面包覆均匀,具有普遍性CNTs/Fe3O4复合材料具有纯Fe3O4相似的超顺磁性,当CNTs的质量分数为10%时,其比饱和磁化强度为64.53emu/g,矫顽力为14.03Oe,可以实现CNTs在磁场中的定向;CNTs/Fe3O4复合材料在0～5GHz范围内具有较好的吸波性能,当CNTs的质量分数为4%时,CNTs/Fe3O4复合材料的吸收峰在2.2GHz附近,反射率达-19dB,频宽为1G左右。因此,CNTs/Fe3O4复合材料有望作为热种子材料用于肿瘤热疗。
The CNTs/ Fe3O4 thermo-seed material was prepared by a simple and effective coprecipitation and hydrothermal treatment method.The results showed that Fe3O4 nanoparticles were decorated on CNTs successfully;Fe3O4 nanoparticles in the surface of carbon nanotubes were uniform and universal;The hysteresis loops of the decorated MWNTs were measured by vibrating sample magnetometer（VSM）,and the results showed that the composite was ferromagnetism with the saturated magnetization of 64.53 emu/g,and the coercive of 14.03 Oe.CNTs/Fe3O4 composite also had better absorbing properties in the 0～5 GHz range.when CNTs content was 4%,the reflection loss value of-19dB and the bandwidth of 1G had been obtained at 2.2GHz.The results indicated that this composite had significant potential for electromagnetic wave absorption application in tumor hyperthermia.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第11期43-45,共3页
New Chemical Materials
基金
国家自然科学基金项目(50672051)
黄石理工学院科研项目(09yjz01R)
