Magnetic graphene-based sheets for bacteria capture and destruction using a high-frequency magnetic field

Andri Hardiansyah, Ming Chien Yang, Hung Liang Liao, Yu Wei Cheng, Fredina Destyorini, Yuyun Irmawati, Chi Ming Liu, Ming Chi Yung, Chuan Chih Hsu, Ting Yu Liu

研究成果: 雜誌貢獻文章同行評審

摘要

Magnetic reduced graphene oxide (MRGO) sheets were prepared by embedding Fe3O4 nanoparticles on polyvinylpyrrolidone (PVP) and poly(diallyldimethylammonium chloride) (PDDA)-modified graphene oxide (GO) sheets for bacteria capture and destruction under a high-frequency magnetic field (HFMF). The characteristics of MRGO sheets were evaluated systematically by transmission electron microscopy (TEM), scanning electron microscopy (SEM), zeta potential measurement, X-ray diffraction (XRD), vibrating sample magnetometry (VSM), and X-ray photoelectron spectroscopy (XPS). TEM observation revealed that magnetic nanoparticles (8–10 nm) were dispersed on MRGO sheets. VSM measurements confirmed the superparamagnetic characteristics of the MRGO sheets. Under HFMF exposure, the temperature of MRGO sheets increased from 25 to 42◦C. Furthermore, we investigated the capability of MRGO sheets to capture and destroy bacteria (Staphylococcus aureus). The results show that MRGO sheets could capture bacteria and kill them through an HFMF, showing a great potential in magnetic separation and antibacterial application.
原文英語
文章編號674
期刊Nanomaterials
10
發行號4
DOIs
出版狀態已發佈 - 四月 2020

ASJC Scopus subject areas

  • 化學工程 (全部)
  • 材料科學(全部)

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