Figure 3
From: Enriched Pyridinic Nitrogen Atoms at Nanoholes of Carbon Nanohorns for Efficient Oxygen Reduction
(a) Wide-scan XPS for the pristine and N-doped SWNHs, deconvoluted N 1s spectra for (b) N-O-SWNHs and (c) N-SWNHs, and (d) N component distribution obtained using the deconvoluted peak area ratio.
