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

被引：330

作者：

Jin, Kyoungsuk ^{[1
,2
]}

Park, Jimin ^{[1
,2
]}

Lee, Joohee ^{[1
,2
]}

Yang, Ki Dong ^{[1
,2
]}

Pradhan, Gajendra Kumar ^{[1
,2
]}

Sim, Uk ^{[1
,2
]}

Jeong, Donghyuk ^{[1
,2
]}

Jang, Hae Lin ^{[1
,2
]}

Park, Sangbaek ^{[1
,2
]}

Kim, Donghun ^{[3
]}

Sung, Nark-Eon ^{[4
]}

Kim, Sun Hee ^{[3
]}

Han, Seungwu ^{[1
,2
]}

Nam, Ki Tae ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, RIAM, Seoul 151744, South Korea

[3] Korea Basic Sci Inst, Div Mat Sci, Taejon 305333, South Korea

[4] POSTECH, Pohang Accelerator Lab, Pohang 790784, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2014年 / 136卷 / 20期

基金：

新加坡国家研究基金会;

关键词：

ANODIC CHARACTERISTICS; CRYSTAL-STRUCTURE; STRUCTURAL REQUIREMENTS; OXYGEN EVOLUTION; PHOTOSYSTEM-II; OXIDES; NANOPARTICLES; SPECTROSCOPY; RESOLUTION; ELECTRODE;

D O I：

10.1021/ja5026529

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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, Mn-3(PO4)(2)center dot 3H(2)O, 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 Mn-3(PO4)(2)center dot 3H(2)O. Computational analysis indicated that the structural flexibility in Mn-3(PO4)(2)center dot 3H(2)O 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.

引用

页码：7435 / 7443

页数：9

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