One-pot synthesis of porphyrin functionalized γ-Fe2O3 nanocomposites as peroxidase mimics for H2O2 and glucose detection

5,10,15,20-Tetrakis(4-carboxyl phenyl)-porphyrin (H2TCPP)-γ-Fe2O3 nanocomposites were demonstrated to possess intrinsic peroxidase-like activity and showed a higher catalytic activity, compared to that of γ-Fe2O3 nanoparticles alone.