CNTs/HAp热种子复合材料的制备及表征

Preparation and Characterization of CNTs/HAp thermo-seed Composite

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,制备了微波靶向热疗用碳纳米管/羟基磷灰石(CNTs/HAp)热种子材料,并对所得的复合材料进行了相应的检测。结果表明:当CNTs的质量分数为10%时,结晶状态良好的HAp均匀覆盖在CNTs的表面;CNTs/HAp复合材料为典型的电损耗型吸波材料,在0-5GHz范围内具有较好的吸波性能,CNTs在其中起到主导作用。随着CNTs含量的增加,CNTs/HAp复合材料的吸波能力逐渐增强,吸收峰向着高频移动,频宽增大。当CNTs的质量分数为8%时,复合材料的最大吸收峰在3.0GHz附近,反射率达-26dB。因此,CNTs/HAp复合材料有望作为热种子材料用于肿瘤热疗。

In this paper, we had successfully prepared CNTs/HAp thermo-seed material by a simple and effective coprecipitation and hydrothermal treatment method. The results showed that HAp nanoparticles were decorated on CNTs successfully. When CNTs content was 10%, after hydrothermal treatment, a certain high degree of crystallinity, pure component single HAp layer was obtained on the surface of CNTs. CNTs/HAp composite had better absorbing properties in the 0 -5 GHz range. With increasing of CNTs content, the microwave absorbing capacity of CNTs/ HAp composite had been gradually strengthened, the absorption peak moved towards high frequency, the bandwidth was increased. When CNTs content was 8%, a maximum reflection loss value of -26 dB had been obtained at 3.0 GHz. The results indicate that this composite has significant potential for electromagnetic wave absorption application in tumor hyperthermia.