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Chemically modified electrodes formed by π-stacking of metalloporphyrins provide a stable and efficient electrocatalytic system for the hydrogen evolution reaction at pH 7.0. Metalloporphyrins M-OEP (M=Co(II), Cu(II), Zn(II), Ru(II), Fe(III) and Ni(II), OEP=2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine) were deposited on glassy carbon electrodes that had been previously modified by using NaOH and...
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