Impacts of hematite, bunsenite and maghemite impurities on the physical and antimicrobial properties of silver nanoparticles
Impacts of hematite, bunsenite and maghemite impurities on the physical and antimicrobial properties of silver nanoparticles
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DOI：
10.1140/epjp/s13360-020-00139-8
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发表时间：
2020-01-13
影响因子：
3.4
通讯作者：
Abdelsalam, H. K.
中科院分区：
文献类型：
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作者：
El-Bassuony, Asmaa A. H.;Abdelsalam, H. K.
采用快速简便的燃烧法合成了掺杂不同杂质的纳米银纳米颗粒AgNPs。通过X射线衍射分析（XRD）得到了单相立方尖晶石结构的AgNPs，并伴有少量杂质AgNPs-赤铁矿-磁赤铁矿（Ag-HM）和AgNPs-赤铁矿-本生石-磁赤铁矿（Ag-HBM）。场发射扫描电子显微镜（FESEM）和原子力显微镜（AFM）分析结果表明，纳米颗粒尺寸的形成与团聚澄清。作为磁性测量的结果，伴随有AgNP的三种杂质（Ag-HBM）的饱和磁化强度（M-s）比伴随有AgNP的两种杂质（Ag-HM）的饱和磁化强度大6.02倍。相反，Ag-HM比Ag-HBM小2.6倍。在抗菌研究中，Ag-HBM显示出比Ag-HM更强的抗菌活性。Ag-HBM对白色念珠菌有较强的抑菌活性，而Ag-HM对供试真菌无抑菌活性。因此，银-HBM纳米粒子的戏剧性推荐可以用作一种有效的抗菌和抗真菌纳米材料。
Nanometric silver nanoparticles AgNPs, accompanied by different impurities hematite, bunsenite and maghemite, were synthesized using a rapid and a facile combustion technique. A single-phase cubic spinel structure was obtained from X-ray diffraction analyses (XRD) for AgNPs accompanied by a small amount of impurities AgNPs-hematite-maghemite (Ag-HM) and AgNPs-hematite-bunsenite-maghemite (Ag-HBM). Resulting from the field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) analyses, the formation of nanoparticle size was clarified with agglomeration. As a result from the magnetic measurements, the saturation magnetization (M-s) of three impurities, accompanied by AgNPs (Ag-HBM), was larger by 6.02-fold than that of two impurities accompanied by AgNPs (Ag-HM). On the contrary, Ag-HM was smaller by 2.6-fold than that of Ag-HBM. During an antimicrobial study, Ag-HBM showed stronger antibacterial activities than that of Ag-HM. Moreover, Ag-HBM showed strong activities against Candida albicans yeast; however, Ag-HM had no activity against the tested fungi. Thus, the dramatic recommendation of Ag-HBM nanoparticles could be used as an effective antibacterial and antifungal nanomaterials.