| Abstract Scope |
Multi-principal element alloys (MPEAs) have been attracting significant interest for various applications, including high-performance catalysts, corrosion resistance, and superior mechanical, thermal, and electrical properties. Here, functionalized nanomaterials based on MPEAs have been explored for high-efficiency reaction catalysts by focusing on the structural-functional property relationship. Specifically, we will discuss MPEA nanoparticles made of transition and noble metal mixtures for carbon reduction and carbon dioxide hydrogenation reactions. Synchrotron-based X-ray absorption spectroscopy (XAS) reveals the elemental composition and oxidation states of reaction surfaces. Low-temperature scanning tunneling microscopy (STM) enables the characterization of atomically resolved surface structures. Temperature-programmed desorption (TPD) measurements quantitatively facilitate the evaluation of the thermal-catalytic performance of nanomaterials in highly controlled environments. The MPEA nanoparticles exhibit unique catalytic functionalities. Correlations between nanostructure, chemical states, and catalytic performance will be discussed. |