Abstract
The colloidal stability of iron oxide nanoparticles (IONPs) played an important role in biomedical applications. In this study, IONPs were synthesized through one-pot co-precipitation route in the presence of capping agent. The capping agents used for coating IONPs were tri-sodium citrate, polyvinylpyrrolidone (PVP) and cetyltrimethylammonium bromide (CTAB) to enhance their stability. The prepared IONPs were characterized by various techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Malvern Zetasizer Nano. It was observed that the IONPs prepared with citrate as a capping agent showed the higher value of zeta potential (ζ = -44mV) compared to IONPs prepared with PVP (ζ= -10mV) and CTAB (ζ= -29.7mV). This revealed that the presence of citrate during IONPs synthesis enhanced the stability of IONPs better than PVP and CTAB.
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