Journal
APPLIED SURFACE SCIENCE
Volume 593, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2022.153404
Keywords
Methanol oxidation; Trimetallic alloys; Flower-like nanoframes
Categories
Funding
- Natural Science Foundation of Hebei Province [E2019202048, B2021202011, E2021202022]
- National Natural Science Foundation of China [22179032, 51771068, 51871088]
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In this study, defect-rich PtPdCu flower-like nanoframes were successfully synthesized by oxidative etching. The PtPdCu flower-like nanoframes exhibited enhanced catalytic activity due to their novel structures with rich defects and the synergistic effect between Pd, Cu, and Pt. Furthermore, they showed exceptional stability even after long-term accelerating tests.
Nanoframe structures with rich defects are desirable in the field of catalysis, whereas the precise synthesis of them remains challenging. In this study, the defect-rich PtPdCu flower-like nanoframes have been successfully synthesized by oxidative etching of pre-prepared PdCu@Pt core-shell nanoflowers. According to the experiment results, the formation of PdCu@Pt core-shell nanoflowers plays a decisive role in synthesizing PtPdCu flower-like nanoframes. Due to its novel structures with rich defects and the synergistic effect between Pd, Cu and Pt, PtPdCu flower-like nanoframes exhibit enhanced catalytic activity. In special, the mass activity of PtPdCu flower-like nanoframes is 2.0 and 7.0 times as large as that of PdCu@Pt core-shell nanoflowers and Pt black for methanol oxidation reaction (MOR) in acidic medium, respectively. Furthermore, PtPdCu flower-like nanoframes present exceptionally stability even after the long-term accelerating test.
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