脉冲激光烧蚀法制备CdO@ZnO核壳纳米颗粒及表征：抗菌活性评价

IF 4.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2025-01-23 DOI:10.1007/s11468-025-02766-2

Nagham Mohamed, Sabah N. Mazhir, Saeed N. T. AlRashid

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引用次数: 0

摘要

液体脉冲激光烧蚀（PLAL）是一种从上到下制备高纯度纳米颗粒的最佳物理技术。本研究利用波长为1064 nm，能量分别为320、520和720 mJ的Nd:YAG激光器，共1000个脉冲，利用该方法合成了CdO@ZnO核壳纳米粒子。通过紫外可见光谱（UV-Vis）、x射线衍射（XRD）和透射电子显微镜（TEM）对所合成的纳米复合材料进行了表征，结果表明所合成的纳米复合材料呈球形或亚球形，尺寸在50 nm左右。对革兰氏阳性菌金黄色葡萄球菌和革兰氏阴性菌大肠杆菌进行抑菌活性试验。结果表明，利用PLAL方法制备的CdO@ZnO核壳纳米颗粒具有很好的杀菌效果，可以对抗致病细菌。

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Preparation and Characterization of CdO@ZnO Core–Shell Nanoparticles by Pulsed Laser Ablation: Evaluation of Anti-Microbial Activity

Pulsed laser ablation in liquid (PLAL) represents one of the best physical techniques for producing high-purity nanoparticles from top to bottom. This study employed this method to synthesize CdO@ZnO core–shell nanoparticles using an Nd:YAG laser with a wavelength of 1064 nm at energies of 320, 520, and 720 mJ, respectively, with a total of 1000 pulses. The properties of the synthesized nanoparticles sample by UV-Vis spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM) which showed that the nanocomposite has a spherical or sub-spherical shape with a size ranging 50 nm. The antibacterial activity was tested against gram-positive bacteria S. aureus and Gram-negative bacteria E. coli. The results showed that the CdO@ZnO core–shell nanoparticles made using the PLAL method are very good at killing bacteria and can fight bacteria that cause disease.

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.