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首页> 外文期刊>表面科学 >Controlling Dissociation Reaction of a Water Molecule on Ultrathin MgO Film
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Controlling Dissociation Reaction of a Water Molecule on Ultrathin MgO Film

机译：超薄MgO膜上水分子解离反应的控制

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摘要

We have recently intensively studied the dissociation of individual water molecules on ultrathin MgO film grown on Ag(100) substrate at the single-molecule level, by means of both scanning tunneling microscopy experiment and density functional theory calculations. We have found clear evidence for that the chemical reactivity of ultrathin MgO film can be controlled by the film thickness, in which the interfacial interaction between oxide and metal substrate plays an important role in determining chemical reactivity. In this short review, we briefly discuss the role of the ultrathin insulating film in water dissociation induced by vibrationally excited state using inelastic tunneling electrons, which is crucial to selectively achieve two kinds of dissociation path, as well as underlying thickness dependence of chemical reactivity.
机译：我们最近通过扫描隧道显微镜实验和密度泛函理论计算，深入研究了在单分子水平上生长在Ag（100）衬底上的超薄MgO膜上单个水分子的解离。我们已经找到明确的证据表明，超薄MgO膜的化学反应性可以通过膜厚来控制，其中氧化物和金属基材之间的界面相互作用在确定化学反应性中起着重要作用。在这篇简短的综述中，我们简要讨论了超薄绝缘膜在使用非弹性隧穿电子的振动激发态引起的水离解中的作用，这对于选择性地实现两种离解路径以及化学反应的基本厚度依赖性至关重要。

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