论文标题
由第一原理计算和人工智能设计的单原子合金催化剂
Single-Atom Alloy Catalysts Designed by First-Principles Calculations and Artificial Intelligence
论文作者
论文摘要
单原子金属合金催化剂(SAAC)最近已成为催化研究中非常活跃的新领域。同时优化反应物的便利分离和中间体结合的平衡强度,使它们对许多工业重要的反应具有很高的效率和选择性。但是,由于缺乏对众多候选材料数量的催化性能的快速而可靠的预测,因此发现了新的SAAC。在这项工作中,我们通过应用使用密度功能输入的参数进行参数来解决此问题。我们的方法比当前的最新线性关系更快,更准确。除了始终预测实验研究的PD/CU,PT/CU,PD/AG,PT/AU,PD/AU,PD/AU,PT/NI,AU/RU,AU/RU和Ni/Zn SAAC(第一个金属是分散的组件)之外,我们还确定了超过两百个却却既有的候选人。预计这些新候选者中的一些比报道的候选者具有更高的稳定性和效率。我们的研究表明,破坏线性关系以避免催化设计中的偏见,并提供了从数十万个过渡金属SAAC中为各种应用选择最佳候选材料的配方。
Single-atom metal alloy catalysts (SAACs) have recently become a very active new frontier in catalysis research. The simultaneous optimization of both facile dissociation of reactants and a balanced strength of intermediates' binding make them highly efficient and selective for many industrially important reactions. However, discovery of new SAACs is hindered by the lack of fast yet reliable prediction of the catalytic properties of the sheer number of candidate materials. In this work, we address this problem by applying a compressed-sensing data-analytics approach parameterized with density-functional inputs. Our approach is faster and more accurate than the current state-of-the-art linear relationships. Besides consistently predicting high efficiency of the experimentally studied Pd/Cu, Pt/Cu, Pd/Ag, Pt/Au, Pd/Au, Pt/Ni, Au/Ru, and Ni/Zn SAACs (the first metal is the dispersed component), we identify more than two hundred yet unreported candidates. Some of these new candidates are predicted to exhibit even higher stability and efficiency than the reported ones. Our study demonstrates the importance of breaking linear relationships to avoid bias in catalysis design, as well as provides a recipe for selecting best candidate materials from hundreds of thousands of transition-metal SAACs for various applications.