The effect of lanthanum(III) and cerium(III) ions between layers of manganese oxide on water oxidation

被引：5

作者：

Najafpour, Mohammad Mahdi ^{[1
,2
]}

Isaloo, Mohsen Abbasi ^{[1
]}

Holynska, Malgorzata ^{[3
,4
]}

Shen, Jian-Ren ^{[5
]}

Allakhverdiev, Suleyman ^{[6
,7
,8
]}

机构：

[1] IASBS, Dept Chem, Zanjan 4513766731, Iran

[2] IASBS, Ctr Climate Change & Global Warming, Zanjan 4513766731, Iran

[3] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany

[4] Univ Marburg, WZMW, D-35032 Marburg, Germany

[5] Okayama Univ, Grad Sch Nat Sci & Technol, Fac Sci, Photosynth Res Ctr, Okayama 7008530, Japan

[6] Russian Acad Sci, Inst Plant Physiol, Controlled Photobiosynth Lab, Moscow 127276, Russia

[7] Russian Acad Sci, Inst Basic Biol Problems, Pushchino 142290, Moscow Region, Russia

[8] Moscow MV Lomonosov State Univ, Fac Biol, Dept Plant Physiol, Moscow 119991, Russia

来源：

PHOTOSYNTHESIS RESEARCH | 2015年 / 126卷 / 2-3期

基金：

俄罗斯基础研究基金会;

关键词：

Artificial photosynthesis; Cerium(III); Lanthanum(III); Nanolayered manganese oxide; Oxygen; Water oxidation; ARTIFICIAL PHOTOSYNTHESIS; OXIDIZING CATALYSTS; NANO; COMPLEXES;

D O I：

10.1007/s11120-015-0098-9

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Manganese oxide structure with lanthanum(III) or cerium(III) ions between the layers was synthesized by a simple method. The ratio of Mn to Ce or La in samples was 0.00, 0.04, 0.08, 0.16, 0.32, 0.5, 0.82, or 1.62. The compounds were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction studies, and atomic absorption spectroscopy. The compounds show efficient catalytic activity of water oxidation in the presence of cerium(IV) ammonium nitrate with a turnover frequency of 1.6 mmol O-2/mol Mn.s. In contrast to the water-oxidizing complex in Photosystem II, calcium(II) has no specific role to enhance the water-oxidizing activity of the layered manganese oxides and other cations can be replaced without any significant decrease in water-oxidizing activities of these layered Mn oxides. Based on this and previously reported results from oxygen evolution in the presence of H (2) (18) O, we discuss the mechanism and the important factors influencing the water-oxidizing activities of the manganese oxides.

引用

页码：489 / 498

页数：10

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