کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147270 | 1497378 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Platinum-carbon electrocatalytic composites via liposome-directed electrodeposition at conductive diamond
ترجمه فارسی عنوان
کامپوزیت الکتروکاتالتیک پلاتین-کربن از طریق الکترودهایی با لیپوزوم در الماس رسانا
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کلمات کلیدی
مواد انرژی ترکیبی، مواد هوشمند، خواص الکتریکی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
A Pt precursor was entrapped in phosphatidylcholine-cholesterol vesicles and the liposomal suspension was used for direct electrodeposition of a Pt-based catalyst on boron-doped diamond (BDD). The average size of the deposited particles (ca. 15 to ca. 40Â nm) is closely related to that of the liposomes and Pt particles are partially embedded into a carbonaceous matrix. Methanol anodic oxidation was used for gauging the electrocatalytic activity of the composites and it was found that the electrodeposition with prior adsorption of the liposomes enables more efficient use of platinum. Without preliminary adsorption, a much higher resistance to fouling was observed for the electrocatalyst. This behavior was ascribed to the presence on the electrodes surface of PtO2 and of a higher amount of oxygenated carbon states. These species act as oxygen donors contributing to an easier eviction of the adsorbed CO, thus partially regenerating active sites from the electrocatalyst surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 47, 21 December 2016, Pages 22529-22537
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 47, 21 December 2016, Pages 22529-22537
نویسندگان
Alexandru Ioan CÄciuleanu, TanÅ£a SpÄtaru, Loredana Preda, Mihai Anastasescu, Petre Osiceanu, Cornel Munteanu, Rodica Daniela BÄrÄÅ£oiu, Alina Aurelia Iovescu, Nicolae SpÄtaru,