Hydrated Manganese (II) Phosphate (Mn3(PO4)2-3H2O) as a Water Oxidation Catalyst

Title
Hydrated Manganese (II) Phosphate (Mn3(PO4)2-3H2O) as a Water Oxidation Catalyst
Authors
진경석박지민이주희양기동가젠드라심욱정동혁장해린박상백김동훈성낙언김선희한승우남기태
Keywords
Water Splitting; Catalysis; Biomimetics; Mn phosphate; Mn structure; DFT calculation
Issue Date
2014-04
Publisher
Journal of the American Chemical Society
Citation
VOL 136, NO 20, 7435-7443
Abstract
The development of a water oxidation catalyst has been a demanding challenge in realizing water splitting systems. The asymmetric geometry and flexible ligation of the biological Mn4CaO5 cluster are important properties for the function of photosystem II, and these properties can be applied to the design of new inorganic water oxidation catalysts. We identified a new crystal structure, Mn3(PO4)2·3H2O, that precipitates spontaneously in aqueous solution at room temperature and demonstrated its high catalytic performance under neutral conditions. The bulky phosphate polyhedron induces a less-ordered Mn geometry in Mn3(PO4)2·3H2O. Computational analysis indicated that the structural flexibility in Mn3(PO4)2·3H2O could stabilize the Jahn−Teller-distorted Mn(III) and thus facilitate Mn(II) oxidation. This study provides valuable insights into the interplay between atomic structure and catalytic activity.
URI
http://pubs.kist.re.kr/handle/201004/50876
ISSN
00027863
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE