Extended Data Fig. 3: Removal of surface NiO and surface ligands from Pt/NiO NWs.
From: Edge sites dominate the hydrogen evolution reaction on platinum nanocatalysts
(a) Cyclic voltammetry of as-synthesized Pt/NiO NWs, partially activated Pt/NiO NWs (NiO was partially leached by 100 cycles of cyclic voltammetry (CV) in N2-saturated 0.1M HClO4 solution (1.1V to 0.05V versus RHE)) and fully activated PtNWs (NiO was fully leached). The absence of Ni2+/Ni3+ redox peaks in fully activated PtNWs confirms no Ni species on PtNW surface. (b) FTIR spectrum of pure oleylamine, as synthesized Pt/NiO NWs and acid leached Pt NWs. The pink vertical lines highlight the characteristic oleylamine peaks.
