Fig. 4: CO2 electrochemical reduction results for two NH2-functionalized GQDs.
From: Regulation of functional groups on graphene quantum dots directs selective CO2 to CH4 conversion

a and b Faradaic efficiency of CH4 (a) and jCH4 (b) as a function of applied potential for GQD-NH2-H (a) and GQD-NH2-L (b). c The ten-hour performance of GQD-NH2-H tested under −0.95 V. The error bars represent the standard deviation from at least three independent samples.