Figure 3
From: Semiconducting hematite facilitates microbial and abiotic reduction of chromium
Results of hematite thin electrode surface analysis (a) XPS results for a representative point near the Cr for both unreacted and reacted electrodes, which show the appearance of Cr on the surface of the reacted electrode. (b) Fitting results for the Cr 2P3/2 peak, which indicate the presence of exclusively Cr(III) compounds. (c) Electron backscatter image of a hematite thin section electrode prior to reaction. (d) Electron backscatter image of a hematite thin section electrode after reaction, showing transformation of the surface.
