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. 2017 Mar 3;7:42233. doi: 10.1038/srep42233

Figure 2.

Figure 2

Cyclic voltammetric (vs. SCE) analyses over a range of scan rates (5–200 mV s−1) of the graphene/PLA filament and printed 3DE within a 1 mM hexaammineruthenium (III) chloride/0.1 M KCl (A and B respectively) and 1 mM ammonium iron (II) sulfate/0.2 M HClO4 (C and D respectively). Inset of C is the cyclic voltammetric response from a blank 0.2 M HClO4 solution utilising the graphene/PLA filament.