Electrocatalytic activity of gold and gold-based bimetallic nanoparticles derived from their surface topographyElectronic supplementary information (ESI) available: Experimental procedures; TEM images of nanoscale gold particles; LSV curves of GCEs modified by AuNW3; LSV curves of bare GCE; LSV curves of GCEs modified by AuTOH70 and TEM images of NPs after the loading process on GCEs; LSV and CV curves of bulk Au; LSV curves of GCEs modified with AuQS3 NPs recorded at the first and fifth scan; TEM images of a series of Au@Pd particles; contribution of each facet in electrode potentials of AuAG10–60, AuNW3 and AuQS3; CV curves of GCEs modified by AuTOH70 particles with different Pd depositions; LSV curves of a series of Au particles; methanol-crossover effects test of commercial Pt/C catalysts and AuNW3 NPs; characterizations of AuNW3@Pd(iv), AuNW3@Pt(iv), AuNW3@Cu(i), AuNW3@Ag, and AuNW3@Ir; CV curves of RDE coated with AuNW3@Pd20.7 NPs; summary of electrode potentials of AuNW3 treated with ligand exchange process; summary of the electrode potential values of half-reactions; summary of electrode potentials of samples demonstrated in Fig. S3; summary of the most negative electrode potentials of a series of nanoscale Au particles; summary of Pd contents, peak positions of nanoscale Au and Au–Pd particles; summary of the fAu/PdAGR; summary of the technique used for bulk percentage and surface coverage; the top view of models and the work functions; summarized date for the calculated work functions; summary of the differences between Plieth equation and proposed general equation used in this study; comparison in activity of a series of nanoscale Au particles towards ORR. See DOI: https://doi.org/10.1039/d3ta02783j

Electrocatalytic activity of gold and gold-based bimetallic nanoparticles derived from their surface topographyElectronic supplementary information (ESI) available: Experimental procedures; TEM images of nanoscale gold particles; LSV curves of GCEs modified by AuNW3; LSV curves of bare GCE; LSV curves of GCEs modified by AuTOH70 and TEM images of NPs after the loading process on GCEs; LSV and CV curves of bulk Au; LSV curves of GCEs modified with AuQS3 NPs recorded at the first and fifth scan; TEM images of a series of Au@Pd particles; contribution of each facet in electrode potentials of AuAG10–60, AuNW3 and AuQS3; CV curves of GCEs modified by AuTOH70 particles with different Pd depositions; LSV curves of a series of Au particles; methanol-crossover effects test of commercial Pt/C catalysts and AuNW3 NPs; characterizations of AuNW3@Pd(iv), AuNW3@Pt(iv), AuNW3@Cu(i), AuNW3@Ag, and AuNW3@Ir; CV curves of RDE coated with AuNW3@Pd20.7 NPs; summary of electrode potentials of AuNW3 treated with ligand exchange process; summary of the electrode potential values of half-reactions; summary of electrode potentials of samples demonstrated in Fig. S3; summary of the most negative electrode potentials of a series of nanoscale Au particles; summary of Pd contents, peak positions of nanoscale Au and Au–Pd particles; summary of the fAu/PdAGR; summary of the technique used for bulk percentage and surface coverage; the top view of models and the work functions; summarized date for the calculated work functions; summary of the differences between Plieth equation and proposed general equation used in this study; comparison in activity of a series of nanoscale Au particles towards ORR. See DOI: https://doi.org/10.1039/d3ta02783j