Composition and antibacterial properties of newly developed layered perovskite/W-hexaferrite nanocomposite materials

IF 2.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Applied Physics A Pub Date : 2025-04-16 DOI:10.1007/s00339-025-08395-0

Rania Ramadan, M. M. Arman

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Abstract

This paper discusses the synthesis of W-type hexaferrite and lanthanum perovskite nanoparticles using the auto-combustion method. Structural analysis conducted through X-ray powder diffraction (XRD) confirms the formation of polycrystalline nanoparticles exhibiting W-type hexaferrite (HF) and orthorhombic perovskite structures. Optical characterization via UV-visible spectroscopy reveals band gaps of 3.2 eV for direct transitions and 2.2 eV for indirect transitions. Scanning electron microscopy (SEM) images illustrate the microstructure, showing grains with prominent hexagonal faces and a spongy morphology, with sizes ranging from 40 to 70 nm. Additionally, antiferromagnetic properties are demonstrated by the hysteresis loop obtained from vibrating sample magnetometer (VSM) measurements. The antibacterial and antifungal activities of the nanosized composite BaCo₂Fe₁₆O₂₇ and LaFeO₃ have been evaluated against various gram-positive and gram-negative bacterial strains.

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新型层状钙钛矿/ w -六铁氧体纳米复合材料的组成及抗菌性能

本文讨论了用自燃烧法制备w型六铁氧体和钙钛矿镧纳米粒子。通过x射线粉末衍射（XRD）进行结构分析，证实形成了具有w型六铁体（HF）和正交钙钛矿结构的多晶纳米颗粒。通过紫外可见光谱的光学表征显示，直接跃迁的带隙为3.2 eV，间接跃迁的带隙为2.2 eV。扫描电镜（SEM）图像显示晶粒具有明显的六边形表面和海绵状形貌，尺寸在40 ~ 70 nm之间。此外，通过振动样品磁强计（VSM）测量得到的磁滞回线证明了反铁磁特性。研究了纳米复合材料BaCo2Fe16O27和LaFeO3对多种革兰氏阳性和革兰氏阴性菌株的抑菌和抑菌活性。

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来源期刊

Applied Physics A 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.40%

发文量

964

审稿时长

38 days

期刊介绍： Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.