Fabrication of New Fe3O4/PVA/(C6H7O6Na)n Nanohybrid Ferrogels for Antibacterial Applications

Abstract

New Fe 3 O 4 /polyvinyl alcohol (PVA)/sodium alginate (C 6 H 7 O 6 Na) n nanohybrid ferrogels for antibacterial applications were fabricated. The crystal and molecular structures along with optical and magnetic properties of the prepared samples were characterized. The antibacterial activity of the ferrogels against Bacillus subtilis and Escherichia coli was investigated using the agar dilution method. X-ray diffraction analysis showed that the Fe 3 O 4 /PVA comprised a PVA amorphous phase and a spinel-structured Fe 3 O 4 crystalline phase. The Fe 3 O 4 /PVA crystallite size was 7.5-9.9 nm and the scanning electron micrographs showed that the Fe 3 O 4 /PVA agglomerated. The ferrogels were superparamagnetic with saturation magnetizations from 14.8 × 10 −3 to 82.1 × 10 −3 emu/g. The absorption of the ferrogels showed a bathochromic effect, accompanied by an increase in the bandgap from 2.09 to 2.18 eV with increasing Fe 3 O 4 content in the ferrogels. The ferrogels demonstrated new potency as antibacterial agents against B. subtilis and E. coli, where their antibacterial performance increased with increasing Fe 3 O 4 content.

Preparation, Characterization, and Application of Novel Ternary PPS/PVA/Fe3O4 Nanocomposite for Enhanced Visible Light Photocatalytic Degradation of Methylene Blue

“…Fe 3 O 4 nanoparticles provide a high speci c surface area, leading to better adsorption of pollutants and excellent e ciency in water applications [10,23]. The deposition of Fe 3 O 4 onto the host matrix prevents the aggregation of nanoparticles, resulting in an easy, quick, and effective separation of catalysts during recovery just by using a magnetic source [24][25][26].…”

Synthesis and Characterization of Polypyrrole/Fe3O4 Nanocomposites: A Promising Material Against Carbon Steel Corrosion

“…On the other hand, magnetite (Fe 3 O 4 ) has found a wide range of applications in several areas, as a result of its good catalytic, electrical, electronic and optical properties [17][18][19] . In a previous study, PPy/Fe 3 O 4 composites were electrochemically synthesized on iron to provide corrosion protection by maintaining the substrate in a passive state 20 .…”