Title:
A synthetic manganese–calcium cluster similar to the catalyst of Photosystem II
Subtitle:
challenges for biomimetic water oxidation
Author(s):
Mousazade, Younes; Mohammadi, Mohammad Reza; Bagheri, Robabeh; Bikas, Rahman; Chernev, Petko; Song, Zhenlun; Lis, Tadeusz; Siczek, Milosz; Noshiranzadeh, Nader; Mebs, Stefan; Dau, Holger; Zaharieva, Ivelina; Najafpour, Mohammad Mahdi
Year of publication:
2020
Available Date:
2021-03-15T13:12:36Z
Abstract:
Herein, we report the synthesis, characterization, crystal structure, density functional theory calculations, and water-oxidizing activity of a pivalate Mn–Ca cluster. All of the manganese atoms in the cluster are Mn(IV) ions and have a distorted MnO6 octahedral geometry. Three Mn(IV) ions together with a Ca(II) ion and four-oxido groups form a cubic Mn3CaO4 unit which is similar to the Mn3CaO4 cluster in the water-oxidizing complex of Photosystem II. Using scanning electron microscopy, transmission electron microscopy, energy dispersive spectrometry, extended X-ray absorption spectroscopy, chronoamperometry, and electrochemical methods, a conversion into nano-sized Mn-oxide is observed for the cluster in the water-oxidation reaction.
Part of Identifier:
e-ISSN (online): 1477-9226
Keywords:
water-oxidation reaction
catalysts
Photosystem II
canning electron microscopy
transmission electronmicroscopy
energy dispersive spectrometry
extended X-ray absorption spectroscopy
chronoampero-metry
DDC-Classification:
530 Physik
Publication Type:
Wissenschaftlicher Artikel
URL of the Original Publication:
DOI of the Original Publication:
Journaltitle:
Dalton Transactions
Publisher Place:
Cambridge, London
Department/institution:
Physik
Institut für Experimentalphysik
Comments:
Open Access in Allianz- und Nationallizenz.
