Facile synthesis, characterization, and antibacterial activities of CuO, NiO, and Co2O3 metal oxide nanoparticles using polysalicylaldehyde-metal Schiff base complexes as a precursor,Applied Physics A

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Facile synthesis, characterization, and antibacterial activities of CuO, NiO, and Co2O3 metal oxide nanoparticles using polysalicylaldehyde-metal Schiff base complexes as a precursor
Applied Physics A ( IF 2.5 ) Pub Date : 2021-09-16 , DOI: 10.1007/s00339-021-04927-6
Zinat Rezazadeh ₁ , Mohammad Ali Nasseri ₁ , Milad Kazemnejadi ₁ , Faezeh Soleimani ₂ , Boshra Mahmoudi ₃

Affiliation

In this study, NiO, CuO, and Co₂O₃ NPs with noteworthy antibacterial activity have been efficiently synthesized by a thermal decomposition of polysalicylaldehyde Schiff base-M(II) complexes (M = Cu, Ni, and Co), as the promising precursors. Polysalicylaldehyde (PSA) Schiff base ligand has been synthesized via the condensation reaction of the 2-aminophenol with polysalicylaldehyde followed by metal coordination to Cu^(II), Ni^(II), and Co^(II) ions. The nanoparticles were obtained in high uniformity and homogeneous morphology with high purity and crystallinity by the thermal decomposition of the corresponding PSA Schiff base complexes. A very uniform and narrow size distribution of nanoparticles with spherical morphology and an average diameter between 20 and 22 nm was obtained for all three nanoparticles. The results of characterization analyses showed high purity and high crystallinity percentage of the prepared nanoparticles. The antibacterial activity of all three nanoparticles on Escherichia coli, Bacillus cereus, and Staphylococcus aureus was studied by well diffusion method as well as MIC analysis. All three nanoparticles showed a significant antibacterial effect compared to the initial complex.

Graphic abstract

A promising protocol has been developed for the uniform-sized metal oxide nanoparticles (CuO, NiO, and Co₂O₃ NPs) with high antibacterial activity using thermal decomposition of polysalicylaldehyde M-Schiff base (Co^(II), Ni^(II), Cu^(II)) complexes.

中文翻译：

以聚水杨醛-金属席夫碱配合物为前驱体的 CuO、NiO 和 Co2O3 金属氧化物纳米粒子的简便合成、表征和抗菌活性

在这项研究中，通过聚水杨醛席夫碱-M (II) 配合物（M = Cu、Ni 和 Co）的热分解有效合成了具有显着抗菌活性的NiO、CuO 和 Co ₂ O ₃ NPs，作为有前景的前体。聚水杨醛 (PSA) 席夫碱配体已通过 2-氨基苯酚与聚水杨醛的缩合反应合成，然后金属配位到 Cu ^(II)、Ni ^(II)和 Co ^(II)离子。通过相应的 PSA Schiff 碱配合物的热分解，获得了具有高纯度和结晶度的高均匀性和均匀形态的纳米颗粒。所有三种纳米颗粒都获得了非常均匀且窄的粒径分布，具有球形形态，平均直径在 20 到 22 nm 之间。表征分析的结果表明所制备的纳米颗粒具有高纯度和高结晶度百分比。三种纳米颗粒对大肠杆菌、蜡样芽孢杆菌和金黄色葡萄球菌的抗菌活性通过井扩散法和MIC分析研究。与初始复合物相比，所有三种纳米颗粒都显示出显着的抗菌作用。