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. Author manuscript; available in PMC: 2016 May 19.
Published in final edited form as: Acc Chem Res. 2015 May 5;48(5):1286–1295. doi: 10.1021/acs.accounts.5b00058

Figure 4.

Figure 4

SEM image of an ITO electrode modified by electrolysis at −0.9 V vs Ag/AgCl of a solution containing 1Cl2 (0.5 mM) in aqueous phosphate buffer (0.5 M, pH 7) for 1 h (0.1 C.cm−2geometric) (A), XPS data (Co2p, O1s and P2p cores) of a H2-CoCat material deposited onto FTO substrate (blue traces) versus commercial Co3(PO4)2·xH2O (black traces) (B), and polarization of a FTO electrode modified with H2-CoCat (blue dots) compared with that of a Co foil electrode (black dots) in phosphate buffer (0.5 M, pH 7) at 0.05 mV.s−1 (C). Reproduced with permission from ref 27. Copyright (2012) Nature Publishing Group.