Soft Chemistry Synthesis and Characterization of CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) Ferrite

被引：7

作者：

Gingasu, Dana ^{[1
]}

Mindru, Ioana ^{[1
]}

Ianculescu, Adelina-Carmen ^{[2
]}

Diamandescu, Lucian ^{[3
]}

Surdu, Vasile-Adrian ^{[2
]}

Marinescu, Gabriela ^{[1
]}

Bartha, Cristina ^{[3
]}

Preda, Silviu

Popa, Marcela ^{[4
]}

Chifiriuc, Mariana Carmen ^{[4
]}

机构：

[1] Romanian Acad, Ilie Murgulescu Inst Phys Chem, Splaiul Independentei 202, Bucharest 060021, Romania

[2] Univ Politehn Bucuresti, Fac Chem, Polizu St 1-7, Bucharest 011061, Romania

[3] Natl Inst Mat Phys, Atomistilor St 405 A, Magurele 077125, Romania

[4] Univ Bucharest, ICUB, Fac Biol & Life, Microbiol Dept,Res Inst,Environm & Earth Sci Div, Splaiul Independentei 91-95, Bucharest 050095, Romania

来源：

MAGNETOCHEMISTRY | 2022年 / 8卷 / 02期

关键词：

nanospinel ferrites; wet chemical method; magnetic properties; antimicrobial activity; MAGNETIC-PROPERTIES; COBALT FERRITE; NANOPARTICLES; COFE2O4; GD; NANOCRYSTALLINE; SUBSTITUTION; PARTICLES; DELIVERY; SPINELS;

D O I：

10.3390/magnetochemistry8020012

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Nanosized CoFe1.8RE0.2O4 (RE3+ = Tb3+, Er3+) ferrites were obtained through wet ferritization method. These ferrites were characterized by X-ray diffraction (XRD), scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM/HR-TEM), Fourier transform infrared spectroscopy (FTIR), Mossbauer spectroscopy and magnetic measurements. The XRD results revealed that the average crystallite size is 5.77 nm for CoFe1.8Tb0.2O4 and 6.42 nm for CoFe1.8Er0.2O4. Distribution of metal cations in the spinel structure estimated from X-ray diffraction data showed that the Tb3+ and Er3+ ions occupy the octahedral sites. TEM images indicated the presence of polyhedral particles with average size 5.91 nm for CoFe1.8Tb0.2O4 and 6.80 nm for CoFe1.8Er0.2O4. Room temperature Mossbauer spectra exhibit typical nanoscaled cobalt ferrite spectra in good agreement with XRD and TEM data. The saturation magnetization value (M-s) is 60 emu/g for CoFe1.8Tb0.2O4 and 80 emu/g for CoFe1.8Er0.2O4. CoFe1.8RE0.2O4 nanoparticles showed similar antimicrobial efficacy against the five tested microbial strains, both in planktonic and biofilm state. The results highlight the promising potential of these types of nanoparticles for the development of novel anti-biofilm agents and materials.

引用

页数：15

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