Figure 8
S 2p SXPS spectra collected at hν = 380 eV from air-oxidized heterogeneous chalcopyrite with pyrite. (a) Chalcopyrite region (red, monosulfide; blue, disulfide; purple, polysulfide; orange, energy-loss feature) and (b) pyrite region (red, bulk disulfide; blue, surface disulfide; purple, polysulfide; orange, energy-loss feature). Survey SXPS spectra from the two regions are shown underneath the S 2p SXPS spectra: (c) chalcopyrite region and (d) pyrite region. |