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Session lectures-Fuels from solar energy and water-from natural to artificial photosynthesis

机译:会议讲座-来自太阳能和水的燃料-从自然到人工光合作用

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The lecture will discuss the need for Solar Fuels and overview the different scientific paths to achieve this goal. Visions and strategies in research in the Swedish Consortium for Artificial Photosynthesis will be covered [1, 2]. Our research aims for the production of hydrogen from solar energy and water. Water shall be oxidized in a catalytic process using solar energy. The electrons from water shall be used in a second process to reduce protons to hydrogen. We apply a biomimetic approach where we copy key principles from natural enzymes that accomplish partial reactions. Water oxidation using solar energy is carried out by Photosystem II using a catalytic Mn_4 complex. In our chemistry we use a photoactive Ru-center (instead of chlorophyll) that is coupled to synthetic multinuclear manganese-complexes. I will describe some of our research on light driven, multi-electron transfer in these Ru–Mn systems [1]. The lecture will also cover a water oxidizing catalyst based on a cobalt nano-particle [3]. This nano-particle has been linked to a photosensitizer to form a water splitting photosensitizercatalyst complex [4]. To accomplish reduction of protons to hydrogen we mimic the di-iron center in hydrogenase enzymes. Some recent results on these biomimetic Fe–Fe complexes will be described [5].
机译:讲座将讨论对太阳能的需求,并概述实现这一目标的不同科学途径。瑞典人工光合作用联合会的研究愿景和策略将被涵盖[1、2]。我们的研究旨在利用太阳能和水生产氢。在使用太阳能的催化过程中,水应被氧化。来自水的电子将用于第二步以将质子还原为氢。我们采用仿生方法,从天然酶中复制完成部分反应的关键原理。由太阳能通过Photosystem II使用催化的Mn_4络合物进行水氧化。在我们的化学中,我们使用具有光活性的Ru中心(代替叶绿素),该中心与合成的多核锰配合物偶联。我将描述我们在这些Ru-Mn系统中对光驱动的多电子转移的一些研究[1]。讲座还将介绍基于钴纳米颗粒的水氧化催化剂[3]。该纳米颗粒已经与光敏剂连接形成水分解光敏剂催化剂配合物[4]。为了实现将质子还原为氢,我们在氢化酶中模拟了二铁中心。这些仿生的Fe-Fe配合物的一些最新结果将被描述[5]。

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