Figure 3From: The synthesis of nitrogen/sulfur co-doped TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets and their enhanced visible-light photocatalytic performanceXPS survey spectrum and high-resolution XPS scan spectra. (a) XPS survey spectrum and high-resolution XPS scan spectra over (b) N 1s, (c) S 2p, and (d) F 1s peaks of the sample T3.Back to article page