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The electroreductive behaviour of CrO 3 +H 2 SO 4 aqueous solution is studied on poly-crystalline iron and copper cathodes. The electrochemical results have been also compared with XPS, AFM and SEM findings collected “ex situ” on emersed electrodes and an electrochemical mechanism featuring adsorbed Cr(IV) and Cr(III) species is proposed. In the case of iron a main role is...
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