The Malaysian Journal of Analytical Sciences Vol 14 No 1 (2010): 63 - 68

 

 

 

Carboxymethyl Chitosan-Fe₃O₄  Nanoparticles:  Synthesis and Characterization

 

Nurul Hidayah Ahmad Safee, Md. Pauzi Abdullah*,  Mohamed Rozali Othman

 

School of Chemistry Science and Food Technology,

Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600  Bangi, Selangor Darul Ehsan

 

*Corresponding author: mpauzi@ukm.my

 

Abstract

In this study, carboxymethyl chitosan bound Fe₃O₄ magnetic nanoparticles (CC-Fe₃O₄ NPs) was synthesized by the binding of carboxymethyl chitosan (CC) onto the surface of Fe₃O₄ magnetic nanoparticles, which was prepared by coprecipitating method. The CC-Fe₃O₄ nanoparticles was characterized by transmission electron microscopy (TEM), X-ray diffractometer (XRD), vibrating sample magnetometer (VSM), Nucleus Magnetic Resonans (NMR) and Fourier Transform Infra Red (FTIR).  TEM studies confirmed that the Fe₃O₄  and CC-Fe₃O₄ particles have a particle size ranges from 9.73-12.30 nm and 9.70-12.50 nm, respectively. The magnetic properties of the Fe₃O₄ particles were verified using VSM. Their saturation magnetization, remnant magnetization and coercivity were 61.0 emu/g, 2.70 emu/g and 38.20 G,  respectively. FTIR studies showed the appearance of peaks at 1629 cm^-1 and 1397 cm^-1 which were characteristic of COOM (M = metal ions) bands, indicating the formation of the iron carboxylate.

 

Keywords: Carboxymethyl chitosan , magnetic nanoparticles 

 

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