Łukowiec Dariusz, Gwóźdź Magdalena, Brzęczek-Szafran Alina, Wasiak Tomasz, Janas Dawid, Kubacki Jerzy, Wacławek Stanisław, Radoń Adrian
Materials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18A, Gliwice 44-100, Poland.
Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, Gliwice 44-100, Poland.
J Phys Chem Lett. 2024 Apr 18;15(15):4006-4014. doi: 10.1021/acs.jpclett.4c00376. Epub 2024 Apr 4.
One-dimensional transition metal materials are promising supports for precious metals used in energy production processes. Due to their electrochemical properties, 3d-group metals (such as Ni, Co, and Fe) can actively interact with catalysts by a strong metal-support interaction. This study shows that changing the Ni:Co ratio makes it possible to modulate the structure of the catalyst supports, which, in turn, provides a tool for designing their electrical and electrochemical properties. For example, Ni-Co shows the highest electrical conductivity (5.8-10 S/cm) among all of the materials examined. On the contrary, the Pd@Ni-Co system presents the highest mass activity (>2000 mA mg) at 0.7 V, exceeding by several times that of commercial Pt/C (>300 mA mg) at the same potential. Our study opens the gateway for applications of bimetallic transition metal nanowires in catalytic conversion and energy production processes.
一维过渡金属材料是能源生产过程中用于贵金属的有前景的载体。由于其电化学性质，3d族金属（如Ni、Co和Fe）可通过强金属-载体相互作用与催化剂发生积极相互作用。本研究表明，改变Ni:Co比例能够调节催化剂载体的结构，进而为设计其电学和电化学性质提供了一种手段。例如，在所有研究材料中，Ni-Co显示出最高的电导率（5.8 - 10 S/cm）。相反，Pd@Ni-Co体系在0.7 V时呈现出最高的质量活性（>2000 mA mg），在相同电位下比商业Pt/C（>300 mA mg）高出数倍。我们的研究为双金属过渡金属纳米线在催化转化和能源生产过程中的应用打开了大门。
