GQDs Incorporated CoPc Nanorods for Electrochemical Detection of Dopamine and Uric Acid

Dopamine (DA) and uric acid (UA) are biomolecules of great consideration that coexist in human body. It is essential challenging to detect them simultaneously with high sensitivity. This paper reports a novel electrochemical biosensor based on the nanocomposites cobalt phthalocyanine (CoPc) anchored graphene quantum dots (GQDs) for DA UA detection. The GQDs incorporation CoPc nanorods partial end stretching significantly enhances electrocatalytic activity promotes electron transfer rate. Low detection limits 21 nm 145 have been successfully achieved fabricated CoPc/GQDs biosensor. density-functional theory proves enhanced conductivity biomolecule's interaction electrode surface. Furthermore, proposed sensor shows remarkable reproducibility, repeatability, stability. applied simultaneous detections urine samples. excellent performance suggests could be promising potential candidate sensors selectively.