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Gold or silver deposited on layered manganese oxide: a functional model for the water-oxidizing complex in photosystem II |
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| Authors: | Mohammad Mahdi Najafpour Fahimeh Rahimi Davood Jafarian Sedigh Robert Carpentier Julian J Eaton-Rye Jian-Ren Shen Suleyman I Allakhverdiev |
| Institution: | 1. Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731, Zanjan, Iran 2. Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731, Zanjan, Iran 3. Groupe de Recherche en Biologie Végétale, Université du Québec à Trois-Rivières, C.P.500, Trois-Rivières, QC, G9A 5H7, Canada 4. Department of Biochemistry, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand 5. Graduate School of Natural Science and Technology/Faculty of Science, Okayama University, Okayama, 700-8530, Japan 6. Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russia 7. Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow, 142290, Russia |
| Abstract: | In this report, gold or silver deposited on layered manganese oxide has been synthesized by a simple method and characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectrometry, atomic absorption spectroscopy, and energy-dispersive X-ray mapping. The gold deposited on layered manganese oxide showed efficient catalytic activity toward water oxidation in the presence of cerium(IV) ammonium nitrate. The properties associated with this compound suggest it is a functional model for the water-oxidizing complex in photosystem II. |
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