Preparation of Pt-Co catalysts on mesoporous carbon and effect of alloying on catalytic activity in oxygen electro-reduction
Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH 4 ) reduction method. To increase the alloy degree of PtCo catalyst, the heat treatment was carried out at various temperatures (300–700°C). The heat-treated PtCo catalysts (PtCo/MC-x) had the higher degrees...
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| Published in | The Korean journal of chemical engineering Vol. 25; no. 3; pp. 431 - 436 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Boston
Springer US
01.05.2008
한국화학공학회 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-1115 1975-7220 |
| DOI | 10.1007/s11814-008-0073-7 |
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| Abstract | Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH
4
) reduction method. To increase the alloy degree of PtCo catalyst, the heat treatment was carried out at various temperatures (300–700°C). The heat-treated PtCo catalysts (PtCo/MC-x) had the higher degrees of Pt-Co alloy than that of as-synthesized PtCo catalyst (PtCo/MC). MC supported-PtCo catalyst (PtCo/MC-500) that was treated at 500°C, had the highest activity and lowest overpotential in oxygen electro-reduction (ORR) among the prepared PtCo catalysts. The high alloy degree and favorable chemical states of PtCo/MC-500 are believed to be responsible for the superior activity in oxygen electroreduction compared to the other PtCo catalysts. |
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| AbstractList | Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH
4
) reduction method. To increase the alloy degree of PtCo catalyst, the heat treatment was carried out at various temperatures (300–700°C). The heat-treated PtCo catalysts (PtCo/MC-x) had the higher degrees of Pt-Co alloy than that of as-synthesized PtCo catalyst (PtCo/MC). MC supported-PtCo catalyst (PtCo/MC-500) that was treated at 500°C, had the highest activity and lowest overpotential in oxygen electro-reduction (ORR) among the prepared PtCo catalysts. The high alloy degree and favorable chemical states of PtCo/MC-500 are believed to be responsible for the superior activity in oxygen electroreduction compared to the other PtCo catalysts. Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH4) reduction method. To increase the alloy degree of PtCo catalyst, the heat treatment was carried out at various temperatures (300-700 oC). The heat-treated PtCo catalysts (PtCo/MC-x) had the higher degrees of Pt-Co alloy than that of as-synthesized PtCo catalyst (PtCo/MC). MC supported-PtCo catalyst (PtCo/MC-500) that was treated at 500 oC, had the highest activity and lowest overpotential in oxygen electro-reduction (ORR) among the prepared PtCo catalysts. The high alloy degree and favorable chemical states of PtCo/MC-500 are believed to be responsible for the superior activity in oxygen electroreduction compared to the other PtCo catalysts. KCI Citation Count: 15 |
| Author | Kim, Pil Kim, Younghun Lee, Youn-Woo Kim, Nam Dong Joo, Ji Bong Yi, Jongheop Kim, Wooyoung Kim, You Jung |
| Author_xml | – sequence: 1 givenname: Ji Bong surname: Joo fullname: Joo, Ji Bong organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University – sequence: 2 givenname: You Jung surname: Kim fullname: Kim, You Jung organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University – sequence: 3 givenname: Wooyoung surname: Kim fullname: Kim, Wooyoung organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University – sequence: 4 givenname: Nam Dong surname: Kim fullname: Kim, Nam Dong organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University – sequence: 5 givenname: Pil surname: Kim fullname: Kim, Pil organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, School of Environmental and Chemical Engineering, Chonbuk National University – sequence: 6 givenname: Younghun surname: Kim fullname: Kim, Younghun organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Department of Chemical Engineering, Kwangwoon University – sequence: 7 givenname: Youn-Woo surname: Lee fullname: Lee, Youn-Woo organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University – sequence: 8 givenname: Jongheop surname: Yi fullname: Yi, Jongheop email: jyi@snu.ac.kr organization: School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University |
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| Keywords | Mesoporous Carbon Electrocatalyst PtCo Oxygen Reduction Fuel Cell |
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| Snippet | Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH
4
) reduction method. To increase the alloy degree of PtCo... Mesoporous carbon (MC)-supported PtCo catalysts were prepared by a sodium borohydride (NaBH4) reduction method. To increase the alloy degree of PtCo catalyst,... |
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| SubjectTerms | Biotechnology Catalysis Chemistry Chemistry and Materials Science Industrial Chemistry Industrial Chemistry/Chemical Engineering Materials Science Reaction Engineering 화학공학 |
| Title | Preparation of Pt-Co catalysts on mesoporous carbon and effect of alloying on catalytic activity in oxygen electro-reduction |
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