Figure 6

CV of GCE, CNCs/GCE, TPP/GCE, Zn-TPP/GCE, CNCs/TPP/GCE and CNCs/Zn-TPP/GCE in 0.1 M PBS (pH 7) containing (a) 500 µM catechol and (b) 500 µM hydroquinone.
CV of GCE, CNCs/GCE, TPP/GCE, Zn-TPP/GCE, CNCs/TPP/GCE and CNCs/Zn-TPP/GCE in 0.1 M PBS (pH 7) containing (a) 500 µM catechol and (b) 500 µM hydroquinone.