Mahardika Yoga Darmawan, Rivaldo Marsel Tumbelaka, N. Istiqomah, A. Nugraheni, E. Suharyadi
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引用次数: 0
摘要
我们研究了利用油茶树（Moringa Oleifera，MO）提取物合成的绿色 Fe3O4 纳米粒子在磁性热疗中的潜在应用。我们将 MO 提取液的用量分别调整为 10 mL 和 20 mL，以确定其对 Fe3O4 的微观结构、磁性能和加热效率的影响。X 射线衍射（XRD）测量结果表明，样品具有反尖晶石立方结构，平均结晶尺寸为 14.7-19.9 nm。纳米颗粒的磁性特征显示，10 mL MO 提取液的饱和磁化率为 55 emu/g，20 mL MO 提取液的饱和磁化率为 38 emu/g。纳米粒子形成的温升曲线在频率为 20 kHz、交变磁场振幅为 100 Oe 时，10 mL MO 提取液变化的最大比吸收率（SAR）值为 2.54 W/g；在频率为 10 kHz、交变磁场振幅为 100 Oe 时，20 mL MO 提取液变化的最小比吸收率（SAR）值为 0.4 W/g。结果表明，利用 MO 绿色合成的 Fe3O4 纳米粒子有望成为一种磁性热疗剂。
Heating Efficiency of Green Synthesized Fe3O4 Nanoparticles Utilizing Moringa oleifera Extract for Magnetic Hyperthermia Applications
The potential application for magnetic hyperthermia of green synthesized Fe3O4 nanoparticles using Moringa Oleifera (MO) extract was investigated. We modified the amount of MO extract solution by 10 and 20 mL to determine its effect on microstructure, magnetic properties, and heating efficiency of Fe3O4. The X-ray diffraction (XRD) measurements revealed that the samples had an inverse spinel cubic structure with an average crystallite size of 14.7-19.9 nm. The magnetic characteristics of nanoparticles show saturation magnetization are 55 emu/g for 10 mL and 38 emu/g for 20 mL MO extract solution variation. The temperature rise profile formed by nanoparticles had the maximum specific absorption rate (SAR) value of 2.54 W/g at a frequency of 20 kHz and an alternating field amplitude of 100 Oe for 10 mL MO extract solution variation and minimum value of 0.4 W/g at a frequency of 10 kHz and an alternating field amplitude of 100 Oe for 20 mL MO extract solution variation. According to the results, green synthesized Fe3O4 nanoparticles using MO have the promising in future to be a magnetic hyperthermia agent.
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