RAPID REMOVAL OF BACTERIAL PATHOGENS USING MAGNETIC IRON OXIDE NANOPARTICLES

Chandraprabha M.N, Ahalya N, Sharada B, Kavya Venkat, Pujashree A.K

Abstract: Instant removal of bacterial pathogens at ultra-low concentrations offers obvious benefits in various infected systems. Magnetic separation techniques have thus proven to be beneficial than other conventional methods. Compared to magnetic beads used in biological separations, magnetic iron oxide nanoparticles (MIONs) promise high-efficiency owing to their large surface/volume ratios. This paper reports the synthesis of MIONs by solution combustion method and stabilization of the nanoparticles by silica coating. The synthesized nanoparticles were characterized by XRD and FTIR. The efficiency of these nanoparticles in the removal of bacterial species like Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa and Salmonella paratyphi have been explored. The results obtained demonstrate the potential of MION nanoadsorbants as highly efficient materials for removal of pathogens from various liquid samples.

Keywords: Silica-Coated MIONs, Amine Functionalization, Bacterial Pathogens, Electrostatic Interaction

DOI: https://doi.org/10.15623/ijret.2016.0529005