Dioxygen and Hydrogen Peroxide Reduction with Hemocyanin Model Complexes

作者：Thorseth Matthew A; Letko Christopher S; Rauchfuss Thomas B; Gewirth Andrew A^*

来源：Inorganic Chemistry, 2011, 50(13): 6158-6162.

DOI：10.1021/ic200386d

Three copper polypyridyl complexes were examined as electrocatalysts for the oxygen reduction reaction (ORR): a Cu-N(3) complex, [Cu [tris(6-methylpyridin-2-yl)methane]-(NCMe)]PF(6) (1); a related Cu(2)N(6) derivative, [Cu(2)-[1,2-bis(6-(bis(6-methylpyridin-2-yl)methyl)pyridin-2-yl)ethane]-(NCMe)(2)](PF(6))(2) (2); and the CuN(4) species [Cu-[tris(pyridin-2-ylmethyl)amine]](ClO(4))(2) [3](ClO(4))(2). Compared to other copper complexes, [3] (ClO(4))(2) exhibits the highest reported ORR onset potential for a Cu complex of 0.53 V vs reversible hydrogen electrode at pH 1. The Cu(2)N(6) hemocyanin model is more active than the CuN(3), but both are less active than the CuN(4) complex. The results indicate that copper polypyridyl complexes are promising cathode catalysts for ORR.

• 出版日期2011-7-4