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首页> 外文会议>Joint Conference on Chemisty >INCREASED HYDROGEN PRODUCTION FROM DNA ASSEMBLED TI02-CDS PHOTOCATALYTIC MATERIALS
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INCREASED HYDROGEN PRODUCTION FROM DNA ASSEMBLED TI02-CDS PHOTOCATALYTIC MATERIALS

机译：从DNA组装的TiO 2-CDS光催化材料增加氢气产生

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In recent years a wide range of inorganic nanostructures have been used as photocatalysts for generating H2. To increase activity, "Z-scheme" photocatalytic systems in conjunction with redox active molecules have been implemented to overcome issues such as recombination events, photostability and aid in electron transfer to fully reduce water to hydrogen. To date, optimal catalysis has been obtained by interfacing different materials through aggregation or epitaxial nucleation of one material on top of another, all of which lowers the accessible active surface area. Mixing electron mediators with photocatalysts in solution also requires high concentrations of the Z-scheme components, which can lead to competing redox reactions. Here, we demonstrate the utilization of DNA as a structure-directing agent to spatially organize TiO2, Pt decorated CdS nanocrystals, and the mediator moleculars, and a significant increase in Ha production as compared to CdS or TiO2 alone was observed.
机译：近年来，广泛的无机纳米结构被用作用于产生H2的光催化剂。 为了增加活性，已经实施了“Z-Scheme”光催化系统与氧化还原活性分子一起实施，以克服电子转移中的重组事件，光稳定性和帮助的问题，以完全将水变为氢气。 迄今为止，通过通过另一个材料的聚集或外延成核在另一个材料的聚集或外延成核来接合不同材料来获得最佳催化，所有这些都可以降低可接近的有源表面积。 将电子介质与溶液中的光催化剂混合还需要高浓度的Z方案组分，这可能导致竞争氧化还原反应。 这里，我们证明了DNA作为结构引导剂以在空间上组织TiO 2，Pt装饰Cds纳米晶体和介体分子的用途，并且仅观察到与Cds或TiO 2相比的HA生产的显着增加。

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