Assessing the Catalytic Behavior of Platinum Group Metal-Based Ultrathin Nanowires Using X-ray Absorption Spectroscopy
Assessing the Catalytic Behavior of Platinum Group Metal-Based Ultrathin Nanowires Using X-ray Absorption Spectroscopy
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DOI：
10.1021/acsami.1c17595
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发表时间：
2021-12-15
影响因子：
9.5
通讯作者：
Wong, Stanislaus S.
中科院分区：
文献类型：
--
作者：
Hurley, Nathaniel;McGuire, Scott C.;Wong, Stanislaus S.
超薄金属基纳米线在小分子反应中作为电催化剂表现优异，如氧还原反应（ORR）、甲醇氧化反应（MOR）和乙醇氧化反应（EOR），并且一直优于类似的Pt/C标准。因此，详细了解超薄纳米线的结构和电子特性对于理解结构-性能相关性至关重要，这对于更复杂的电催化剂的合理设计至关重要。x射线吸收光谱（XAS）是一种重要而有前途的表征技术，可以获得纳米材料的电子结构和局部原子结构的独特见解。在这里，我们讨论了最近如何将原位和非原位XAS实验应用于探测用于电催化的超薄纳米线的复杂行为的具体例子。此外，基于这一优先，我们提供了关于这些正在进行的努力的未来潜力和方向的想法。
Ultrathin metal-based nanowires have excelled as electrocatalysts in small-molecule reactions, such as the oxygen reduction reaction (ORR), the methanol oxidation reaction (MOR), and the ethanol oxidation reaction (EOR), and have consistently outperformed analogous Pt/C standards. As such, a detailed understanding of the structural and electronic properties of ultrathin nanowires is essential in terms of understanding structure-property correlations, which are crucial in the rational design of ever more sophisticated electrocatalysts. X-ray absorption spectroscopy (XAS) represents an important and promising characterization technique with which to acquire unique insights into the electronic structure and the local atomic structure of nanomaterials. Herein, we discuss tangible examples of how both ex situ and in situ XAS experiments have been recently applied to probing the complex behavior of ultrathin nanowires used in electrocatalysis. Moreover, based on this precedence, we provide ideas about the future potential and direction of these ongoing efforts.