Fig. 1From: Co-immobilization of laccase and TEMPO onto amino-functionalized magnetic Fe3O4 nanoparticles and its application in acid fuchsin decolorizationFTIR spectra of Fe3O4 nanoparticles (a) and amino-functionalized Fe3O4 nanoparticles (b). The strong absorption at 3394 cm−1 in b was probably attributable to the free amino groups and overlapped by the O–H stretching vibrationBack to article page