On the Influence of the Metal Loading on the Structure of Carbon-Supported PtRu Catalysts and Their Electrocatalytic Activities in CO and Methanol Electrooxidation Обзор
| Журнал |
PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084 |
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| Вых. Данные | Год: 2007, Том: 9, Номер: 40, Страницы: 5476-5489 Страниц : 14 DOI: 10.1039/b707598g | ||||||
| Ключевые слова | FUEL-CELL ELECTROCATALYSTS; PLATINUM-RUTHENIUM ALLOY; SMALL ORGANIC-MOLECULES; IN-SITU FTIR; MONOLAYER OXIDATION; ELECTROCHEMICAL OXIDATION; SINGLE-CRYSTAL; SURFACE-AREA; Ru ALLOYS; DEPOSITED RUTHENIUM | ||||||
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| Организации |
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Информация о финансировании (3)
| 1 | German Research Foundation | 436RUS113-718-1-1 |
| 2 | Российский фонд фундаментальных исследований | 01-03-33132 |
| 3 | Российский фонд фундаментальных исследований | 06-03-32737 |
Реферат:
PtRu (1 : 1) catalysts supported on low surface area carbon of the Sibunit family (SBET = 72 m2 g−1) with a metal percentage ranging from 5 to 60% are prepared and tested in a CO monolayer and for methanol oxidation in H2SO4 electrolyte. At low metal percentage small (<2 nm) alloy nanoparticles, uniformly distributed on the carbon surface, are formed. As the amount of metal per unit surface area of carbon increases, particles start coalescing and form first quasi two-dimensional, and then three-dimensional metal nanostructures. This results in a strong enhancement of specific catalytic activity in methanol oxidation and a decrease of the overpotential for CO monolayer oxidation. It is suggested that intergrain boundaries connecting crystalline domains in nanostructured PtRu catalysts produced at high metal-on-carbon loadings provide active sites for electrocatalytic processes.
Библиографическая ссылка:
Gavrilov A.N.
, Savinova E.R.
, Simonov P.A.
, Zaikovskii V.I.
, Cherepanova S.V.
, Tsirlina G.A.
, Parmon V.N.
On the Influence of the Metal Loading on the Structure of Carbon-Supported PtRu Catalysts and Their Electrocatalytic Activities in CO and Methanol Electrooxidation
PCCP: Physical Chemistry Chemical Physics. 2007. V.9. N40. P.5476-5489. DOI: 10.1039/b707598g WOS Scopus РИНЦ CAPlusCA OpenAlex
On the Influence of the Metal Loading on the Structure of Carbon-Supported PtRu Catalysts and Their Electrocatalytic Activities in CO and Methanol Electrooxidation
PCCP: Physical Chemistry Chemical Physics. 2007. V.9. N40. P.5476-5489. DOI: 10.1039/b707598g WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 21 мая 2007 г. |
| Принята к публикации: | 23 июл. 2007 г. |
| Опубликована online: | 16 авг. 2007 г. |
Идентификаторы БД:
| Web of science: | WOS:000250085600008 |
| Scopus: | 2-s2.0-35248855384 |
| РИНЦ: | 13540335 |
| Chemical Abstracts: | 2007:1143012 |
| Chemical Abstracts (print): | 148:41228 |
| OpenAlex: | W2151189918 |