Enhanced photo-electrochemical response of reduced graphene oxide and CN nanosheets for rutin detection.

Herein, a sensitive photo-electrochemical sensor based on CN and reduced graphene oxide nanosheets modified glassy carbon electrode (CN-RGO/GCE) has been fabricated for the detection of rutin under UV light illumination. In CN-RGO catalyst, RGO not only works as a template but also promotes electron transfer, meanwhile, CN acts as a photocatalyst. Benefiting from the superior electron transfer capacity and efficient UV light effect of the CN-RGO catalyst, we get a photo-electrochemical sensor for the rutin detecting with a low detection limit of 1.78×10molL and an excellent linear range of 5×10-1.4×10molL. Meanwhile, the achieved CN-RGO/GCE demonstrated nice selectivity, good reproducibility as well as reliable stability. Moreover, compared with the electrochemical determination, the CN-RGO electrode provides a new way for rutin detection by photo-electrochemical method with a promising UV light responsive result.