TiO2纳米结构表面光催化制氢的形貌研究
Topographical study of TiO2 nanostructure surface for photocatalytic hydrogen production
摘要：
在目前的工作中，我们调查的光催化制氢（水裂解）活性的不同Pt负载的二氧化钛纳米管层。因此，我们制造独立式膜，并将它们固定在四种不同的配置中：顶部向上（具有引发层草或没有）和底部向上（底部封闭或开放），然后用各种量的Pt装饰管，并测量开路光催化H2生产率。我们发现顶部开口形态的配置的强烈影响显示出最高的光催化制氢效率，这些纳米管产生的H2是效率最低的结构（底部封闭）的3.5倍。因此，这项工作提供了有价值的指导方针，优化二氧化钛纳米管层的光催化应用。
英文摘要：
In the present work we investigate the photocatalytic hydrogen production (water splitting) activity of different Pt loaded TiO2 nanotube layers. Therefore, we fabricate free standing membranes and fix them in four different configurations: top up (with initiation layer grass or without) and bottom up (bottom closed or open), then decorate the tubes with various amounts of Pt and measure the open-circuit photocatalytic H2 production rate. We find a strong influence of the configuration with the open top morphology showing the highest photocatalytic hydrogen production efficiency, these nanotubes yield 3.5 times more H2 than the least efficient structure (bottom closed). The work therefore provides valuable guidelines for optimizing TiO2 nanotube layers for photocatalytic applications.
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