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Unraveling Ultrasonic Assisted Aqueous-phase One-Step Synthesis of Porous PtPdCu Nanodendrites for Methanol Oxidation with a CO-poisoning Tolerance

Version 2 2023-10-22, 09:03
Version 1 2023-06-22, 04:36
journal contribution
revised on 2023-10-22, 09:01 and posted on 2023-10-22, 09:03 authored by Qingqing Lu, Xilei Gu, Jiaojiao Li, Wenpeng Li, Rafael Luque, Kamel Eid

The tailored design of tri-metallic Pt-based porous nanodendrites (PNDs) is crucial for green energy production technologies, ascribed to their fancy features, great surface areas, accessible active sites, and stability against aggregation. However, their aqueous-phase one-step synthesis at room temperature remains a daunting challenge. Herein, we present a facile, green, and template-free approach for the one-step synthesis of PtPdCu PNDs by ultrasonication of an aqueous solution of metal salts and Pluronic F127 at 25 ℃, based on natural isolation among nucleation and growth step driven by the disparate reduction kinetics of metals and the acoustic cavitation mechanism of ultrasonic waves. The resultant PtPdCu PNDs formed in a spatial nanodendritic shape with a dense array of branches, open corners, interconnected pores, high surface area (46.9 m2/g), and high Cu content (21%). The methanol oxidation reaction (MOR) activity of PtPdCu PNDs (3.66 mA/µgPt) is 1.45, 2.73, and 2.83 times higher than those of PtPd PNDs, PtCu PNDs, and commercial Pt/C, respectively based on equivalent Pt mass, which is superior to previous reported PtPdCu catalysts reported elsewhere besides a superior durability and CO-poisoning tolerance. This study may pave the way for the controlled fabrication of ternary Pt-based PNDs for various electrocatalytic applications.

Other Information

Published in: Ultrasonics Sonochemistry
License: http://creativecommons.org/licenses/by/4.0/
See article on publisher's website: http://dx.doi.org/10.1016/j.ultsonch.2023.106494

Funding

Open Access funding provided by the Qatar National Library

History

Language

  • English

Publisher

Elsevier

Publication Year

  • 2023

License statement

This Item is licensed under the Creative Commons Attribution 4.0 International License

Institution affiliated with

  • Qatar University
  • College of Engineering - QU
  • Gas Processing Center - QU