Investigation of structural, magnetic and antibacterial activities of CrxFe3−xO4 ferrofluids

This study aimed to investigate the structural, magnetic, and antibacterial activities of CrxFe3−xO4 ferrofluids. CrxFe3−xO4 nanoparticles were synthesized from iron sand by a co-precipitation method using Cr3+ ion variants (x content) of 0, 0.05, 0.1, 0.15, and 0.2. The prepared nanoparticles were...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2019-01, Vol.693 (1), p.60-72
Main Authors: Ahmad Taufiq, Wahyuni, Nenny, Saputro, Rosy Eko, Mufti, Nandang, Sunaryono, Hidayat, Arif, Yuliantika, Defi, Hidayat, Nurul, Mujamilah
Format: Article
Language:English
Subjects:
Antibacterial agents
Ferrofluids
Fourier transforms
Infrared analysis
Ions
Iron oxides
Magnetic moments
Magnetic properties
Magnetic saturation
Magnetometers
Morphology
Nanoparticles
Sand
Transmission electron microscopy
Trivalent chromium
X-ray diffraction
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Summary:This study aimed to investigate the structural, magnetic, and antibacterial activities of CrxFe3−xO4 ferrofluids. CrxFe3−xO4 nanoparticles were synthesized from iron sand by a co-precipitation method using Cr3+ ion variants (x content) of 0, 0.05, 0.1, 0.15, and 0.2. The prepared nanoparticles were then characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and Fourier transform infrared (FTIR). The results of XRD analysis showed that the addition of Cr+ ions caused a shift in the diffraction peak, indicating the successful penetration of Cr+ ions into the Fe3O4 octahedral atomic site. The average particle size of Fe3O4 nanoparticles determined by TEM morphology analysis was 13.7 nm. In addition, the magnetic properties of CrxFe3−xO4 ferrofluids analyzed via VSM showed that the saturation magnetization ranged between 6.95 and 42.71 emu/g, while the magnetic moments were in the range of 7.47 × 10−19–19.76 × 10−19 J/T, which varied with the addition of Cr3+ ions. Furthermore, an analysis of the antibacterial activities of CrxFe3−xO4 ferrofluids revealed that bacterial viability decreased with increase in the number of Cr3+ ions. Thus, the CrxFe3−xO4 ferrofluids prepared from iron sand are potentially excellent antibacterial agents.
ISSN:1542-1406
1527-1943