Soft chemistry routes for the preparation of Ag-CoFe₂O₄ nanocomposites

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• 作者：Dana Gingasu^a ; Ioana Mindru^a ; ^{imandru@yahoo.com} ; Luminita Patron^a ; Gabriela Marinescu^a ; Silviu Preda^a ; Jose Maria Calderon-Moreno^a ; Petre Osiceanu^a ; Simona Somacescu^a ; Nicolae Stanica^a ; Marcela Popa^b ; Crina Saviuc^b ; Mariana Carmen Chifiriuc^b
• 关键词：A. Powders ; Chemical preparation ; B. Nanocomposites ; B. Spectroscopy ; E. Biomedical applications
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：43
• 期：3
• 页码：3284-3291
• 全文大小：1786 K
• 卷排序：43

文摘

Silver-cobalt ferrite nanocomposites (Ag-CoFe2O4) were synthesized through wet ferritization process and self-propagating combustion method. The structure, morphology, surface chemistry and magnetic properties of the nanocomposites were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and vibrating sample magnetometer (VSM). X-ray diffraction patterns confirmed the formation of CoFe2O4 and Ag nanoparticles with cubic symmetry. The average crystallite size of CoFe2O4 by wet ferritization ranged between 60 Å and 87 Å; for those obtained by self-propagating combustion was in the range 232–290 Å. SEM micrographs revealed different morphological features of nanocomposites. Ag-CoFe2O4 obtained by wet ferritization exhibited typical superparamagnetic behaviour. The antimicrobial and anti-biofilm properties of all silver-cobalt ferrites were evaluated. The results revealed that the Ag-CoFe2O4 nanocomposites exhibited good microbicidal and anti-biofilm features.