A TiO2 nanoparticle system for sacrificial solar H2 production prepared by rational combination of a hydrogenase with a ruthenium photosensitizer.
A TiO2 nanoparticle system for sacrificial solar H2 production prepared by rational combination of a hydrogenase with a ruthenium photosensitizer.
复制标题
通过氢化酶与钌光敏剂的合理组合制备了用于牺牲太阳能制氢的TiO2纳米颗粒系统。
DOI：
10.1007/978-1-61779-132-1_9
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Reisner E
中科院分区：
文献类型：
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作者：
Reisner E
包含共同附着在纳米颗粒上的氢化酶和光敏剂的混合系统可作为使用可见光快速产生氢气 (H2) 的合理模型。本章描述了用 Desulfomicrobium baculatum 氢化酶 (Db[NiFeSe]-H) 和三(联吡啶基)钌光敏剂 (RuP) 功能化的 TiO2 纳米粒子的逐步制备过程。在可见光照射下，这些颗粒在室温下在牺牲电子供体存在的情况下从中性水中产生氢气——这是一种用于水分解阴极半反应的测试系统。特别是，我们描述了如何通过电化学方法选择具有所需特性（包括对 TiO2 的强吸附）的氢化酶和光敏剂。选择催化剂 Db[NiFeSe]-H 是因为即使存在 H2 和痕量 O2 时也具有高产氢活性。 Db[NiFeSe]-H 和 RuP 在 TiO2 电极上的吸附导致高电化学和光催化活性，转化为纳米颗粒，表现出高效的光捕获、电荷分离和牺牲性氢气生成。
A hybrid system comprising a hydrogenase and a photosensitizer co-attached to a nanoparticle serves as a rational model for fast dihydrogen (H2) production using visible light. This chapter describes a stepwise procedure for preparing TiO2nanoparticles functionalized with a hydrogenase fromDesulfomicrobium baculatum(Db[NiFeSe]-H) and a tris(bipyridyl)ruthenium photosensitizer (RuP). Upon irradiation with visible light, these particles produce H2from neutral water at room temperature in the presence of a sacrificial electron donor – a test-system for the cathodic half reaction of water splitting. In particular, we describe how a hydrogenase and a photosensitizer with desired properties, including strong adsorption on TiO2, can be selected by electrochemical methods. The catalystDb[NiFeSe]-H is selected for its high H2production activity even when H2and traces of O2are present. Adsorption ofDb[NiFeSe]-H and RuP on TiO2electrodes results in high electrochemical and photocatalytic activities that translate into nanoparticles exhibiting efficient light harvesting, charge separation, and sacrificial H2generation.