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Thermal, Magnetic Properties and Antimicrobial Effects of Magnetic Iron Oxide Nanoparticles Treated with Polygonum cognatum
Iranian Journal of Science and Technology, Transactions A: Science ( IF 1.7 ) Pub Date : 2021-06-24 , DOI: 10.1007/s40995-021-01167-4
Mustafa Ersin Pekdemir , Sibel Pekdemir , Şule İnci , Sevda Kırbağ , Mehmet Çiftci

This study aimed to synthesize magnetic Fe3O4 nanoparticles treated with Polygonum cognatum and then evaluate its thermal, magnetic, and antimicrobial activity. The surface morphology of MNP was characterized by SEM and image mapping. The XRD measurements were carried out to calculate the crystallite size of the sample, and the cubic structure of the iron oxide nanoparticles was identified in the XRD pattern. FT-IR spectroscopy confirmed that the bioactive molecules in the plant structure are attached to the MNP surface. Thermal analysis showed that the plant extract reduced the thermal stability of pure MNP. From the magnetization curves obtained by VSM, it was seen that MNP treated with the plant has superparamagnetic properties and its saturation magnetization value is 26.073 emu/g. Besides, the antimicrobial effects of MNP, plant extract, and MNP treated with plant extract against Staphylococcus aureus, Klebsiella pneumoniae, Escherichia coli, Bacillus megaterium, and Candida albicans were examined.



中文翻译:

何首乌处理磁性氧化铁纳米颗粒的热、磁特性和抗菌作用

本研究旨在合成用何首乌处理的磁性 Fe 3 O 4纳米粒子,然后评估其热、磁和抗菌活性MNP的表面形貌通过SEM和图像映射表征。进行 XRD 测量以计算样品的微晶尺寸,并在 XRD 图中确定氧化铁纳米颗粒的立方结构。FT-IR 光谱证实植物结构中的生物活性分子附着在 MNP 表面。热分析表明,植物提取物降低了纯 MNP 的热稳定性。从VSM得到的磁化曲线可以看出,经过植物处理的MNP具有超顺磁性,饱和磁化值为26.073emu/g。此外,MNP、植物提取物和用植物提取物处理的MNP对金黄色葡萄球菌、肺炎克雷伯菌、大肠杆菌、巨大芽孢杆菌的抗菌作用白色念珠菌进行了检查

更新日期:2021-06-24
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