A water-soluble iron electrocatalyst for water oxidation with high TOF
摘要:
The reaction of anhydrous FeCl3 and 1,4,7,10-tetraazacyclododecane (L) affords an iron(III) complex, [LFeCl2]Cl (1), a new molecular electrocatalyst, which has been determined by X-ray crystallography. Electrochemical studies indicate that the catalyst is the first water-soluble molecular species, that is among the most rapid homogeneous water oxidation catalysts, with a turnover frequency of similar to 65 s(-1). Sustained water oxidation catalysis occurs at ITO electrode to give O-2 over a 36 h electrolysis period with 91.5% Faradaic yield and no observable decomposition of the catalyst. (C) 2014 Elsevier B.V. All rights reserved.
Chemical and Visible-Light-Driven Water Oxidation by Iron Complexes at pH 7-9: Evidence for Dual-Active Intermediates in Iron-Catalyzed Water Oxidation
作者:Gui Chen、Lingjing Chen、Siu-Mui Ng、Wai-Lun Man、Tai-Chu Lau
DOI:10.1002/anie.201209116
日期:2013.2.4
Ironing out a solution: Chemical and visible‐light‐driven wateroxidation by ironcomplexes and iron salts at pH7–9 has been investigated. The ironcomplexes and salts act as precatalysts (see scheme) to produce α‐Fe2O3 nanoparticles that are the real catalyst for the wateroxidation with a turnover number over 1000.