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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Alkali Ion Incorporation into V2O5: a Noncovalent Interactions Analysis
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Alkali Ion Incorporation into V2O5: a Noncovalent Interactions Analysis

机译:碱离子掺入V2O5:非共价相互作用分析

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Understanding the interaction of alkali metals with layered materials like vanadia is important for a range of technological applications such as energy storage and heterogeneous catalysis. Here we used the NCI (noncovalent interactions) index to analyze the nature of the chemical bonding between inserted alkali atoms (Li, Na, and K) and vanadia. We found that alkali atoms ionize in bulk vanadia making directional ionic bonds with neighboring oxygen atoms, whereas the dispersive interactions between vanadia layers remain unmodified by the presence of alkali ions. Interestingly, we show how the NCI analysis discriminates among the different vanadium oxygen types of bond, capturing even finer interactions involving reduced vanadium sites or ring stabilization. In addition, we explored dynamic effects, concluding that the directionality of all interactions is preserved at 500 K.
机译:了解碱金属与层状材料(例如钒)的相互作用对于一系列技术应用(例如能量存储和非均相催化)很重要。在这里,我们使用NCI(非共价相互作用)指数来分析插入的碱原子(Li,Na和K)和钒之间的化学键性质。我们发现碱金属在整体钒中离子化,与邻近的氧原子形成方向性的离子键,而钒层之间的分散相互作用由于碱离子的存在而未改变。有趣的是,我们显示了NCI分析如何区分键的不同钒氧类型,捕获了涉及减少的钒位点或环稳定作用的更精细的相互作用。此外,我们探索了动态效果,得出结论,所有交互的方向性都保留在500K。

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