Figure 4: ADT and TEM microstructure of the catalysts after ADT. | Nature Communications

Figure 4: ADT and TEM microstructure of the catalysts after ADT.

From: Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity

Figure 4

CV curves of 10th and 10,000 cycle for the (a) Ptn/gDNA–GO composite, (b) Pt nanoparticles/GO and (c) Pt/C catalyst. (d) Comparison of decrease in EASA for the catalysts. The durability test was carried out for the three samples in an O2-saturated 0.1 M HClO4 solution with the cyclic potential sweeping between 0.6 and 1.2 V versus reversible hydrogen electrode (RHE) at a scan rate of 50 mV s−1. The metal loading on the rotating-disk electrode was 11.3 μg cm−2 and current densities were normalized in reference to the geometric surface area of a rotating-disk electrode (0.0707, cm2). (e–g) TEM images of the Ptn/gDNA–GO, Pt nanoparticles/GO and Pt/C catalyst after the ADT. Scale bars, 20 nm.

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