2024-03-29T13:47:26Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1723742019-09-11T12:11:31Zcom_10261_35com_10261_5col_10261_288
00925njm 22002777a 4500
dc
Rizo, Rubén
author
Sebastián del Río, David
author
Lázaro Elorri, María Jesús
author
Rodríguez, José Luis
author
Pastor Tejera, Elena
author
2017-03-03
The electrooxidation of ethanol and carbon monoxide on Pt nanoparticles (NPs) supported on carbon nanofibers (CNFs) and carbon blacks (oxidized and non-oxidized) is studied. Quite similar characteristics are found for Pt NPs, including particle size and crystal phases, regardless of the nature of carbon support. Cyclic voltammetries and current-transient curves show higher ethanol oxidation current density for Pt/CNF than for Pt/Vulcan. In situ spectroelectrochemical techniques including Fourier transform infrared spectroscopy (FTIR) and differential electrochemical mass spectrometry (DEMS), are employed in order to identify adsorbed reaction intermediates and products. Pt/CNF results in a lower CO poisoning of the NP surface compared to Pt/Vulcan, allowing higher amount of free Pt active sites for the oxidation of ethanol which leads to the formation of acetic acid during the reaction.
Journal of Catalysis 348: 22-28 (2017)
0021-9517
http://hdl.handle.net/10261/172374
1090-2694
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/100012000
Ethanol electrooxidation
Pt electrocatalysts
Differential electrochemical mass spectrometry
Fourier transform infrared spectroscopy
Direct ethanol fuel cell
Influence of the nature of the carbon support on the activity of Pt/C catalysts for ethanol and carbon monoxide oxidation