Sandwich nanohybrid of single-walled carbon nanohorns-TiO2-porphyrin for electrocatalysis and amperometric biosensing towards chloramphenicol.

A sandwich nanohybrid of single-walled carbon nanohorn-TiO2-porphyrin was prepared via the dentate binding of TiO2 nanoparticles to carboxylate groups, which showed an excellent electrocatalytic activity towards the reduction of chloramphenicol in neutral media, leading to a highly sensitive and stable amperometric biosensor for chloramphenicol.