Electrochemical oxidation of formic acid on Pt- and Pd-based bimetallic catalysts
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Electrochemical oxidation of HCOOH was studied on single metal Pt, Pt/C and Pd black catalysts, on bimetallic surfaces of Pt-Au and Pd-Au bulk electrodes as well as on Pt-Co/C, Pt-Au/C and Pt-Pd nanocatalysts. The electrocatalysts were characterized by cyclic voltammetry and COads stripping, while the HCOOH oxidation was examined under the potentiodynamic and potentiostatic conditions. The results indicate that the ensemble effect is crucial for high selectivity of Pt-based surfaces toward dehydrogenation path. The enhancement of HCOOH oxidation rate on Pd-based surfa-ces was reached through electronic modification exhibited by the second metal. Our results also point out that the self-poisoning of the electrocatalyst by COads produced by the incomplete CO2 reduction is related to the strength of the Pt- and Pd-adsorbate bond, which has to be considered in designing of an electrocatalyst for HCOOH oxidation.
Кључне речи:
Electrochemical oxidation / electrocatalysts / Pt-based catalysts / Pd-based catalystsИзвор:
Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2014, Belgrade, September 22-26 2014, 2014, I, 375-382Издавач:
- Society of Physical Chemists of Serbia
Финансирање / пројекти:
- Развој, карактеризација и примена наноструктуираних композитних катализатора и интерактивних носача у горивним спреговима и електролизи воде (RS-MESTD-Basic Research (BR or ON)-172054)
Институција/група
IHTMTY - CONF AU - Obradović, Maja D. AU - Gojković, Snežana Lj. PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6362 AB - Electrochemical oxidation of HCOOH was studied on single metal Pt, Pt/C and Pd black catalysts, on bimetallic surfaces of Pt-Au and Pd-Au bulk electrodes as well as on Pt-Co/C, Pt-Au/C and Pt-Pd nanocatalysts. The electrocatalysts were characterized by cyclic voltammetry and COads stripping, while the HCOOH oxidation was examined under the potentiodynamic and potentiostatic conditions. The results indicate that the ensemble effect is crucial for high selectivity of Pt-based surfaces toward dehydrogenation path. The enhancement of HCOOH oxidation rate on Pd-based surfa-ces was reached through electronic modification exhibited by the second metal. Our results also point out that the self-poisoning of the electrocatalyst by COads produced by the incomplete CO2 reduction is related to the strength of the Pt- and Pd-adsorbate bond, which has to be considered in designing of an electrocatalyst for HCOOH oxidation. PB - Society of Physical Chemists of Serbia C3 - Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2014, Belgrade, September 22-26 2014 T1 - Electrochemical oxidation of formic acid on Pt- and Pd-based bimetallic catalysts VL - I SP - 375 EP - 382 UR - https://hdl.handle.net/21.15107/rcub_cer_6362 ER -
@conference{ author = "Obradović, Maja D. and Gojković, Snežana Lj.", year = "2014", abstract = "Electrochemical oxidation of HCOOH was studied on single metal Pt, Pt/C and Pd black catalysts, on bimetallic surfaces of Pt-Au and Pd-Au bulk electrodes as well as on Pt-Co/C, Pt-Au/C and Pt-Pd nanocatalysts. The electrocatalysts were characterized by cyclic voltammetry and COads stripping, while the HCOOH oxidation was examined under the potentiodynamic and potentiostatic conditions. The results indicate that the ensemble effect is crucial for high selectivity of Pt-based surfaces toward dehydrogenation path. The enhancement of HCOOH oxidation rate on Pd-based surfa-ces was reached through electronic modification exhibited by the second metal. Our results also point out that the self-poisoning of the electrocatalyst by COads produced by the incomplete CO2 reduction is related to the strength of the Pt- and Pd-adsorbate bond, which has to be considered in designing of an electrocatalyst for HCOOH oxidation.", publisher = "Society of Physical Chemists of Serbia", journal = "Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2014, Belgrade, September 22-26 2014", title = "Electrochemical oxidation of formic acid on Pt- and Pd-based bimetallic catalysts", volume = "I", pages = "375-382", url = "https://hdl.handle.net/21.15107/rcub_cer_6362" }
Obradović, M. D.,& Gojković, S. Lj.. (2014). Electrochemical oxidation of formic acid on Pt- and Pd-based bimetallic catalysts. in Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2014, Belgrade, September 22-26 2014 Society of Physical Chemists of Serbia., I, 375-382. https://hdl.handle.net/21.15107/rcub_cer_6362
Obradović MD, Gojković SL. Electrochemical oxidation of formic acid on Pt- and Pd-based bimetallic catalysts. in Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2014, Belgrade, September 22-26 2014. 2014;I:375-382. https://hdl.handle.net/21.15107/rcub_cer_6362 .
Obradović, Maja D., Gojković, Snežana Lj., "Electrochemical oxidation of formic acid on Pt- and Pd-based bimetallic catalysts" in Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2014, Belgrade, September 22-26 2014, I (2014):375-382, https://hdl.handle.net/21.15107/rcub_cer_6362 .