Fig. 6. (A) represents the FTIR for (I) nano Fe-CNB, (II) CA bead, (III) nano Fe-CNB embedded CA bead, (IV) DOX-loaded Fe-CNB CA bead to understand the presence of different functional groups and the interactions present in nano Fe-CNB, CA and DOX. (B) depicts the bond formation and chemical composition of nano Fe-CNB (I) survey spectra of nano Fe-CNB, (II) spectrum for C1s peak, (III) represents the O1s spectrum, (IV), (V) and (VI) represents the spectrum for S2p, N1s, and Fe2p of nano Fe-CNB respectively.