Cellulose and chitosan based magnetic nanocomposite microspheres and its application

Abstract In this work, a simple and green method is used to fabricate magnet nanocomposite microspheres (cellulose/chitosan/Fe 3 O 4 ) based on cellulose/chitosan microsphere via the interaction between metal ions with chitosan. The results of Fourier transform infrared spectra and X‐ray diffraction indicated that the Fe 3 O 4 nanoparticles were well‐fixed in the network of cellulose/chitosan microsphere as a result of the chelation role between chitosan and metal ions. Moreover, the morphology of Fe 3 O 4 nanoparticle can be adjusted by changing the chitosan concentration of cellulose/chitosan microsphere. Most important, the catalytic performance of the nanocomposite magnet microsphere was studied, and the magnet nanocomposite microspheres with face‐centered cubic structure and less size of Fe 3 O 4 nanoparticles have shown excellent catalytic performance. Based on their excellent catalytic properties, these magnet cellulose/chitosan/Fe 3 O 4 microspheres have prospect applications in the field of biotechnology and environmental, and so on.