Nanostructure engineering is important in the development of metal-based catalysts to improve material utilization efficiency and catalytic activity. Among the available nanoscale architectures, mesoporous structures have raised much attention due to their large surface area and their highly accessible inner sites for guest species, suitable for a wide range of applications. Gold (Au)-based materials are promising catalysts thanks to their stability, nontoxicity, and good resistance to poisoning effects. Modifying the composition by introducing inexpensive metals to prepare multicomponent Au-based catalysts is an effective route to both reduce the cost and improve the catalytic activity. Herein, a polymeric micelle assembly approach to synthesize mesoporous AuCuNi ternary alloy films by electrochemical deposition is reported. This simple method involves the co-electrodeposition process of Au, Cu, and Ni precursors at fixed applied potential in the presence of polymeric micelles acting as a sacrificial template. The compositional ratio can be easily adjusted to optimize the catalytic performance of the mesoporous AuCuNi films, which show promising results for glucose oxidation and methanol oxidation reactions. It is believed that mesoporous AuCuNi films can be desirable to satisfy the needs for the next generation of multifunctional catalyst.
Bibliographical noteFunding Information:
This work was supported by the Australian Research Council (ARC) Future Fellow (FT150100479), JSPS KAKENHI (17H05393 and 17K19044), and the research fund by the Suzuken Memorial Foundation. A. S. Nugraha acknowledges the Indonesia Endowment Fund for Education (LPDP).
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All Science Journal Classification (ASJC) codes
- Materials Science(all)