Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation
Само за регистроване кориснике
2012
Аутори
Stevanović, SanjaTripković, Dušan
Rogan, Jelena
Popović, Ksenija
Lović, Jelena
Tripković, Amalija
Jovanović, Vladislava M.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
High surface area carbon-supported Pt, PtRh, and PtSn catalysts were synthesized by microwave-assisted polyol procedure and tested for ethanol oxidation in perchloric acid. The catalysts were characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning tunnelling microscopy (STM), TEM, and EDX techniques. STM analysis of unsupported catalysts shows that small particles (similar to 2 nm) with a narrow size distribution are obtained. TEM and XRD examinations of supported catalysts revealed an increase in particle size upon deposition on carbon support (diameter similar to aEuro parts per thousand 3 nm). The diffraction peaks of the bimetallic catalysts in X-ray diffraction patterns are slightly shifted to lower (PtSn/C) or higher (PtRh/C) 2 theta values with respect to the corresponding peaks at Pt/C catalyst as a consequence of alloy formation. Oxidation of ethanol is significantly improved at PtSn/C with the onset potential shifted for similar to aEuro parts per... thousand 150 mV to more negative values and the increase of activity for approximately three times in comparison to Pt/C catalyst. This is the lowest onset potential found for ethanol oxidation at PtSn catalysts with a similar composition. Chronoamperometric measurements confirmed that PtSn/C is notably less poisoned than Pt/C catalyst. PtRh/C catalyst exhibited mild enhancement of overall electrochemical reaction in comparison to Pt/C.
Кључне речи:
PtSn/C / PtRh/C / Ethanol oxidation / Polyol synthesis / Microwave irradiationИзвор:
Journal of Solid State Electrochemistry, 2012, 16, 10, 3147-3157Издавач:
- Springer, New York
Финансирање / пројекти:
- Нов приступ дизајнирању материјала за конверзију и складиштење енергије (RS-MESTD-Basic Research (BR or ON)-172060)
DOI: 10.1007/s10008-012-1755-y
ISSN: 1432-8488
WoS: 000308824000002
Scopus: 2-s2.0-84868612199
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Stevanović, Sanja AU - Tripković, Dušan AU - Rogan, Jelena AU - Popović, Ksenija AU - Lović, Jelena AU - Tripković, Amalija AU - Jovanović, Vladislava M. PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2173 AB - High surface area carbon-supported Pt, PtRh, and PtSn catalysts were synthesized by microwave-assisted polyol procedure and tested for ethanol oxidation in perchloric acid. The catalysts were characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning tunnelling microscopy (STM), TEM, and EDX techniques. STM analysis of unsupported catalysts shows that small particles (similar to 2 nm) with a narrow size distribution are obtained. TEM and XRD examinations of supported catalysts revealed an increase in particle size upon deposition on carbon support (diameter similar to aEuro parts per thousand 3 nm). The diffraction peaks of the bimetallic catalysts in X-ray diffraction patterns are slightly shifted to lower (PtSn/C) or higher (PtRh/C) 2 theta values with respect to the corresponding peaks at Pt/C catalyst as a consequence of alloy formation. Oxidation of ethanol is significantly improved at PtSn/C with the onset potential shifted for similar to aEuro parts per thousand 150 mV to more negative values and the increase of activity for approximately three times in comparison to Pt/C catalyst. This is the lowest onset potential found for ethanol oxidation at PtSn catalysts with a similar composition. Chronoamperometric measurements confirmed that PtSn/C is notably less poisoned than Pt/C catalyst. PtRh/C catalyst exhibited mild enhancement of overall electrochemical reaction in comparison to Pt/C. PB - Springer, New York T2 - Journal of Solid State Electrochemistry T1 - Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation EP - 3157 IS - 10 SP - 3147 VL - 16 DO - 10.1007/s10008-012-1755-y ER -
@article{ author = "Stevanović, Sanja and Tripković, Dušan and Rogan, Jelena and Popović, Ksenija and Lović, Jelena and Tripković, Amalija and Jovanović, Vladislava M.", year = "2012", abstract = "High surface area carbon-supported Pt, PtRh, and PtSn catalysts were synthesized by microwave-assisted polyol procedure and tested for ethanol oxidation in perchloric acid. The catalysts were characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning tunnelling microscopy (STM), TEM, and EDX techniques. STM analysis of unsupported catalysts shows that small particles (similar to 2 nm) with a narrow size distribution are obtained. TEM and XRD examinations of supported catalysts revealed an increase in particle size upon deposition on carbon support (diameter similar to aEuro parts per thousand 3 nm). The diffraction peaks of the bimetallic catalysts in X-ray diffraction patterns are slightly shifted to lower (PtSn/C) or higher (PtRh/C) 2 theta values with respect to the corresponding peaks at Pt/C catalyst as a consequence of alloy formation. Oxidation of ethanol is significantly improved at PtSn/C with the onset potential shifted for similar to aEuro parts per thousand 150 mV to more negative values and the increase of activity for approximately three times in comparison to Pt/C catalyst. This is the lowest onset potential found for ethanol oxidation at PtSn catalysts with a similar composition. Chronoamperometric measurements confirmed that PtSn/C is notably less poisoned than Pt/C catalyst. PtRh/C catalyst exhibited mild enhancement of overall electrochemical reaction in comparison to Pt/C.", publisher = "Springer, New York", journal = "Journal of Solid State Electrochemistry", title = "Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation", pages = "3157-3147", number = "10", volume = "16", doi = "10.1007/s10008-012-1755-y" }
Stevanović, S., Tripković, D., Rogan, J., Popović, K., Lović, J., Tripković, A.,& Jovanović, V. M.. (2012). Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation. in Journal of Solid State Electrochemistry Springer, New York., 16(10), 3147-3157. https://doi.org/10.1007/s10008-012-1755-y
Stevanović S, Tripković D, Rogan J, Popović K, Lović J, Tripković A, Jovanović VM. Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation. in Journal of Solid State Electrochemistry. 2012;16(10):3147-3157. doi:10.1007/s10008-012-1755-y .
Stevanović, Sanja, Tripković, Dušan, Rogan, Jelena, Popović, Ksenija, Lović, Jelena, Tripković, Amalija, Jovanović, Vladislava M., "Microwave-assisted polyol synthesis of carbon-supported platinum-based bimetallic catalysts for ethanol oxidation" in Journal of Solid State Electrochemistry, 16, no. 10 (2012):3147-3157, https://doi.org/10.1007/s10008-012-1755-y . .