کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6501485 | 46424 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Promotion of Pt surfaces for ethanol electro-oxidation by the addition of small SnO2 nanoparticles: Activity and mechanism
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Promotion of Pt surfaces for ethanol electro-oxidation by the addition of small SnO2 nanoparticles: Activity and mechanism Promotion of Pt surfaces for ethanol electro-oxidation by the addition of small SnO2 nanoparticles: Activity and mechanism](/preview/png/6501485.png)
چکیده انگلیسی
The catalytic effect of a SnO2 co-catalyst for ethanol electrooxidation on polycrystalline Pt is studied by electrochemical methods, in situ infrared reflection-absorption spectroscopy, and high resolution transmission electron microscopy. The electrochemical results show that deposition of small SnO2 NPs onto the pc-Pt electrode surface significantly enhances the catalytic performance of Pt. Infrared spectroscopy measurements show the effect that small SnO2 particles have on the removal of CO from the Pt surface and suggest that the electrocatalytic C-C bond splitting activity of Pt, the key step in full conversion of ethanol to CO2, is not affected by the addition of the -OH species provided by the SnO2 particles. Also, it is shown that controlled deposition of SnO2 is needed in order to control the rate of partial oxidation to acetic acid compared to full oxidation to CO2. The combined results provide new insight into the role of SnO2 co-catalysts in promoting the electro-oxidation of ethanol to CO2 on Pt surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volumes 152â153, 25 June 2014, Pages 397-402
Journal: Applied Catalysis B: Environmental - Volumes 152â153, 25 June 2014, Pages 397-402
نویسندگان
Joseph W. Magee, Wei-Ping Zhou, Michael G. White,