Highly porous PtPd nanoclusters synthesized via selective chemical etching as efficient catalyst for ethanol electro-oxidation
Author | Ahmad, Yahia H. |
Author | Mohamed, Assem T. |
Author | Alashraf, Abdullah |
Author | Matalqeh, Maha |
Author | El-Shafei, Ahmed |
Author | Al-Qaradawi, Siham Y. |
Author | Aljaber, Amina S. |
Available date | 2024-03-25T06:42:37Z |
Publication Date | 2020 |
Publication Name | Applied Surface Science |
Resource | Scopus |
ISSN | 1694332 |
Abstract | Direct ethanol fuel cells (DEFCs) have received great interest owing to their high power density and environmental friendness. Nevertheless, the designing of active, durable, and efficient anode for DEFCs is a profound challenge. In this context, we reported the synthesis of PtPd porous nanoclusters (PtPd PNCs) as electrocatalyst for ethanol oxidation reaction (EOR). This was implemented through two-step synthesis. Firstly, ternary AgPtPd nanodendrites (NDs) were synthesized via ultrasound-assisted co-reduction of the metal precursors using ascorbic acid (AA) as a mild reductant and Pluronic F127 as structure-directing agent. Thereafter, PtPd PNCs were created by selective chemical etching of AgPtPd nanocrystals in 1 M HNO3. The textural properties, morphology, and elemental composition of the studied electrocatalysts were investigated, and their catalytic activities towards ethanol electrooxidation were examined. PtPd PNCs revealed a high surface area of 83.0 m2 g−1 and high porosity compared to its counterparts. Additionally, it depicted enhanced catalytic performance towards ethanol electrooxidation in 1 M KOH with mass activity of 1.8 A mg−1 compared to PtPd NDs (0.97 A mg−1), Pt NDs (0.51 A mg−1), and Pt/C (0.33 A mg−1). The enhanced catalytic performance of PtPd PNCs was ascribed to high surface area, high porosity, and increased active sites. |
Language | en |
Publisher | Elsevier |
Subject | Ethanol electro-oxidation Palladium Platinum Porous nanoclusters Selective etching |
Type | Article |
Volume Number | 508 |
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