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Carbothermal treated iron oxide nanoparticles with improving magnetic heating efficiency for hyperthermia

Xudong ZuoSchool of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213100, PR ChinaHao DingSchool of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213100, PR ChinaJiandong ZhangSchool of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213100, PR ChinaTao FangSchool of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213100, PR ChinaDongmei ZhangSchool of Mathematics and Physics, Jiangsu University of Technology, Changzhou 213100, PR China

2021en

ABI

Annotatsiya

Iron oxide nanoparticles with high magnetic heating efficiency is highly desired for magnetic hyperthermia applications. In this paper, carbothermal treatments with graphene are used for improving the magnetic heating efficiency of iron oxide nanoparticles. With the increasing treatment temperature from 400 °C to 700 °C, the specific absorption rate (SAR) increases 2–7 folds. Oxygen vacancies resulted from carbon reduction process, along with the rapid grain growth (from 5.1 nm to 225.6 nm), improve eddy current loss. SAR calculations suggest that eddy current loss accounts up to 23.9%-78.5% of the total SAR after carbothermal treatments, which is the main factor for SAR improvements. This work may provide a methodological reference of preparing iron oxide nanoparticles for magnetic hyperthermia.

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Identifikatorlar

DOI: 10.1016/j.rinp.2021.105095

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