کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
186194 | 459609 | 2014 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Pt–Cu alloy with high density of surface Pt defects for efficient catalysis of breaking C–C bond in ethanol Pt–Cu alloy with high density of surface Pt defects for efficient catalysis of breaking C–C bond in ethanol](/preview/png/186194.png)
• The prepared AC-PtCu–4/C has higher density of surface defects.
• The AC-PtCu–4/C has higher mass and surface activity for ethanol oxidation.
• The AC-PtCu–4/C can enhance the C–C bond cleavage of ethanol to generate CO2.
• The chemical dealloying is suitable to prepare highly active Pt-based catalysts.
• The electrochemical dealloying results in large size and aggregation of particles.
The Pt–Cu alloy/C (AC-PtCu-4/C) with uniform nanoparticles and high density of surface defects was synthesized by the microwave-polyol technique following acid-treatment. The AC-PtCu-4/C contained much higher density of surface defects than did the commercial Pt/C. Electrochemical characterization demonstrated that the AC-PtCu-4/C exhibited mass activity and surface activity 4.8 and 3.9 times higher than those of Pt/C for ethanol oxidation. Moreover, the AC-PtCu-4/C can enhance the C–C bond cleavage of ethanol to generate CO2 2.47 times more than that of Pt/C under the same conditions, as evidenced by in situ FTIR reflection spectroscopy.
The AC-PtCu-4/C contained much higher density of surface defects than did the commercial Pt/C. Electrochemical characterization demonstrated that the AC-PtCu-4/C exhibited mass activity and surface activity 4.8 and 3.9 times higher than those of Pt/C for ethanol oxidation. Moreover, the AC-PtCu-4/C can enhance the C–C bond cleavage of ethanol to generate CO2 2.47 times more than that of Pt/C under the same conditions, as evidenced by in situ FTIR reflection spectroscopy.Figure optionsDownload as PowerPoint slide
Journal: Electrochimica Acta - Volume 125, 10 April 2014, Pages 29–37