A Ternary Zn−Al−Ir Hydrotalcite‐Like Compound Exhibiting High Efficiency and Recyclability as a Water Oxidation Catalyst. Issue 10 (6th October 2016)

• Record Type: Journal Article
• Authors: Fagiolari, Lucia; Scafuri, Antonio; Costantino, Ferdinando; Vivani, Riccardo; Nocchetti, Morena; Macchioni, Alceo
• Is Part Of: ChemPlusChem. Volume 81:Issue 10(2016)
• Page Start: 1060
• Page End: 1063
• Publication Date: 2016-10-06
• Subjects: hydrotalcites -- iridium -- layered double hydroxides -- water oxidation -- water splitting; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201600087
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: Herein it is shown that hydrotalcite‐like compounds (HTlcs), doped with a suitably reactive metal, can efficiently act as water oxidation catalysts. As a case study, a ternary HTlc of formula [Zn0.667 Al0.306 Ir0.027 (OH)2 ]Cl0.333 ⋅ 0.6 H2 O, in which iridium is homogeneously distributed into the octahedral sites of brucite‐type sheets, was prepared and tested as a heterogeneous water oxidation catalyst, using NaIO4 as a sacrificial oxidant. This HTlc showed excellent performance in terms of turnover frequency (up to 113 min −1 ), turnover number (>11 900), stability and recyclability. Abstract : Enhanced performance : Hydrotalcite‐like compounds, doped with active metals, can efficiently act as water oxidation catalysts as exemplified by [Zn0.667 Al0.306 Ir0.027 (OH)2 ]Cl0.333 ⋅ 0.6 H2 O, which exhibits excellent performance in terms of turnover frequency (up to 113 min −1 ), turnover number (>11 900), stability and recyclability.