Enhanced peroxidase-like activity of porphyrin functionalized ceria nanorods for sensitive and selective colorimetric detection of glucose

5,10,15,20-tetrakis(4-carboxyl phenyl)-porphyrin (H2TCPP)-CeO2 nanocomposites were demonstrated to possess intrinsic peroxidase-like activity and showed a higher catalytic activity, compared to that of CeO2 nanorods alone.48