材料科学与工程学报2021，Vol.39Issue(1)：16-22,7.DOI:10.14136/j.cnki.issn1673-2812.2021.01.003
FeNi@SiO2磁性纳米复合粒子的制备及磁热性能
Synthesis and Magnetocaloric Effects of FeNi@SiO2 Nanocomposite Particles
摘要
Abstract
Large-scale synthesis and prominent magnetocaloric effects of magnetic particles in low temperature and normal temperature ranges have theoretical value for the application of tissue rewarming and magnetic hyperthermia.Iron-nickel nanoparticles with an average diameter of 80nm were prepared on a large scale by high-temperature arc discharge method following the process of classification and sedimentation.Iron-nickel silica nanoparticles with an average diameter of 100 nm were obtained by the sol-gel method and the coating thickness was 15-20 nm.The saturation magnetization (Ms ) was measured to be 80 emu/g by using a superconducting quantum interferometer.Under the high-temperature standard,the iron-nickel silica nanoparticles mainly show the magnetocaloric effect,and the average heating rate is 3.6 ℃/min,which is enough to consider the need for magnetic hyperthermia.In the simulation condition of tissue rewarming,iron-nickel silica nanoparticles exhibit prominent magnetocaloric efficiency with an average heating rate of 61.8 ℃/min in the presence of Vs55 . The iron-nickel silica nanocomposite particles exhibit prominent magnetocaloric effects in different solvents and temperature ranges so that they can be used as a temperature activating agent for tissue rewarming and hyperthermia.The results benefit the applications of hyperthermia and tissue rewarming.关键词
磁性纳米颗粒/热性能/升温速率/磁热疗/组织复温Key words
Magnetic nanoparticles/Magnetocaloric effects/Heating rate/Hyperthermia/Tissue rewarming分类
化学化工引用本文复制引用
张莹,周妹婷,高一鸣,熊晰,刘树理,马嵩,张志东..FeNi@SiO2磁性纳米复合粒子的制备及磁热性能[J].材料科学与工程学报,2021,39(1):16-22,7.基金项目
This work is funded by NSFC (81401501,51571195),Liaoning Province Education Department (LJQ2015110,.2019LJC03), Innovation Program of Liaoning Province (20180163082),Shenyang Pharmaceutical University Young and Middle-aged Teachers Career Development Support Plan (ZQN2015013) （81401501,51571195）
