A mononuclear copper electrocatalyst for both water reduction and oxidation

Abstract

The oxidation and reduction of water is a key challenge in the production of chemical fuels from electricity.

Armed by Asp? C-terminal carboxylate in a Dap-branched peptide and consequences in the binding of CuII and electrocatalytic water oxidation

“…29,33 Earlier it has been proposed that this step could be water nucleophilic attack (WNA) at a (L) Cu III -Oc species with electrophilic character that is generated in a second 1e oxidation. [28][29][30]33 Most recently, Llobet and Maseras provided an overview of water oxidation mechanisms including a new alternative, SET-WNA (single electron transfer WNA).…”

On the Cu(III)/Cu(II) Redox Chemistry of Cu-Peptide Complexes to Assist Catalyst Design

“…[38][39][40][41][42] Recently, Cu(II) complexes with ligands, including peptides supporting the Cu(II)!Cu(III) redox transition, have found a completely new application in electrocatalytic water oxidation, which represents a rapidly growing research field. [43][44][45][46][47][48][49][50][51][52][53][54][55] The reaction 2H 2 O ! O 2 +4H + + 4e − involves the formation of an O=O bond and the release of four protons.…”

Synthesis and catalytic properties of an iron(III) complex supported by amine-bis(phenolate) ligand

“…Zhang et al 16.67 mM). This indicates that hydrogen evolution electrocatalyzed by 1 requires the reduction of Fe I to Fe 0 and protonation.…”

“…To increase the reaction rate and decrease energy consumption, it is necessary to employ an efficient hydrogen evolution reaction electrocatalyst. Many research groups have focused on the development of molecular catalysts employing more transition metals, and several complexes that contain nickel [7,8], cobalt [9][10][11], iron [12][13][14], copper [15][16][17][18][19][20], and molybdenum [21][22][23][24][25] have been developed as electrocatalysts for reduction of water to form H 2 . Although, there has been significant progress in designing molecular catalysts for H 2 evolution, the search for highly active catalysts that can operate in aqueous solution still remains a challenge.…”