Affiliation:
1. Institut für Organische Chemie Universität Würzburg Am Hubland 97074 Würzburg Germany
2. Institut für Organische Chemie Universität Tübingen Auf der Morgenstelle 72076 Tübingen Germany
Abstract
AbstractWater oxidation catalysis is a key step for sustainable fuel production by water splitting into hydrogen and oxygen. The synthesis of a novel coordination oligomer based on four Ru(bda) (bda = 2,2′‐bipyridine‐6,6′‐dicarboxylate) centers, three 4,4′‐bipyridine (4,4′‐bpy) linkers, and two 4‐picoline (4‐pic) end caps is reported. The monodispersity of this tetranuclear compound is characterized by NMR techniques. Heterogeneous electrochemical water oxidation after immobilization on multi‐walled carbon nanotubes (MWCNTs) shows catalytic performance unprecedented for this compound class, with a turnover frequency (TOF) of 133 s−1 and a turnover number (TON) of 4.89 × 106, at a current density of 43.8 mA cm−2 and a potential of 1.45 V versus normal hydrogen electrode (NHE).
Funder
Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst
H2020 European Research Council
Subject
Industrial and Manufacturing Engineering,Mechanics of Materials,General Materials Science