Impact of different magnetic materials added to silver-magnetite nanoparticles on the structural, magnetic and antimicrobial properties.
Impact of different magnetic materials added to silver-magnetite nanoparticles on the structural, magnetic and antimicrobial properties.
复制标题
DOI：
10.1140/epjs/s11734-022-00759-4
复制
发表时间：
2023-01-11
期刊：
影响因子：
--
通讯作者：
中科院分区：
文献类型：
--
作者：
采用一种简便、低成本、快速的自燃烧法制备了不同磁性材料的尖晶石铜钴纳米铁氧体纳米颗粒。对所研究的样品进行了X射线衍射图和原子力显微镜的研究，确定了它们的纳米尺寸范围。在银磁铁矿(CoAF)中添加钴纳米铁氧体(CoAF)比添加铜纳米铁氧体(CuAF)在磁测量中产生更显著的效果。这是由于CoAF具有比CuAF高得多的矫顽力Hc和饱和磁化强度Ms(分别是CuAF的5.7倍和2.8倍)，因此CoAF纳米复合材料可以应用于永磁体。其次，通过磁性测量计算了纳米复合材料的工作频率。CoAF和CuAF纳米复合材料分别适用于微波超高频C波段和微波超高频S波段。这两种纳米复合材料对受试真菌都没有效果，但对受试的革兰氏阳性和革兰氏阴性细菌具有很强的抗菌活性。因此，CoAF和CuAF纳米复合材料是一种潜在的生物医学应用抗菌纳米材料。
Different magnetic materials of spinel copper and cobalt nanoferrites added to silver–magnetite nanoparticles were fabricated by a facile, low cost, and rapid auto-combustion method to form a nanocomposite. X-ray diffraction patterns and atomic force microscopy were studied for the investigated samples and confirmed their nanosize range. Adding cobalt nanoferrite to silver–magnetite (CoAF) yielded a more pronounced effect in the magnetic measurements than adding copper nanoferrite (CuAF). This result was attributed to the much higher coercivity Hc and saturation magnetization Ms (5.7-fold and 2.8-fold, respectively) of CoAF than CuAF; accordingly, the CoAF nanocomposite can be applied to a permanent magnet. Next, the operating frequencies of the nanocomposites were calculated from the magnetic measurements. The CoAF and CuAF nanocomposites were applicable in the microwave super-high-frequency C-band and the microwave super-high-frequency S-band, respectively. Both nanocomposites were ineffective against the tested fungi but showed strong antimicrobial activities against the tested Gram-positive and Gram-negative bacteria. Thus, CoAF and CuAF nanocomposites are potential antibacterial nanomaterials for biomedical applications.
登录
查看更多内容
影响因子：
2.6
作者：
El-Bassuony, Asmaa A. H.;Gamal, W. M.;Abdelsalam, H. K.
通讯作者：
Abdelsalam, H. K.
影响因子：
4.6
作者：
Hwang, Jiunn-Jer;Ma, Te-Wei
通讯作者：
Ma, Te-Wei
影响因子：
5.2
作者：
Marinca, Traian Florin;Chicinas, Ionel;Isnard, Olivier
通讯作者：
Isnard, Olivier
影响因子：
4
作者：
Akhtar, Majid Niaz;Saleem, Muhammad;Khan, Muhammad Azhar
通讯作者：
Khan, Muhammad Azhar
影响因子：
3.4
作者：
El-Bassuony, Asmaa A. H.;Abdelsalam, H. K.
通讯作者：
Abdelsalam, H. K.