Now showing items 1-10 of 265
Estudo da eletro-oxidação de moléculas orgânicas pequenas sobre multicamadas metálicas Ptpc/Rh/Pt e Ptpc/Ru/Pt utilizando FTIR in situ
(Universidade Federal de São CarlosUFSCarPrograma de Pós-graduação em QuímicaCâmpus São Carlos, 2018-09-06)
The modification of platinum-based electrodes for the efficiency optimization of the fuel cells has generated a great scientific interest, due to the problems associated with the poisoning of the catalytic surface. In ...
Altering the adsorptive and electronic properties of Pt through poly(vinyl alcohol) adsorption
In the present paper we investigated the effect of adsorbed PVA on Pt electrodes on classic electrochemical processes such as hydrogen UPD, oxygen reduction and CO electro-oxidation. Upon adsorption PVA blocks roughly 50% ...
Ethanol electro-oxidation on carbon-supported Pt-Ru, Pt-Rh and Pt-Ru-Rh nanoparticles
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
This work investigates the effects of carbon-supported Pt, Pt-Ru, Pt-Rh and Pt-Ru-Rh alloy electrocatalysts oil the yields of CO2 and acetic acid as electro-oxidation products of ethanol. Electronic and structural features ...
Oscillatory instabilities during the electrocatalytic oxidation of methanol on platinum
(Sociedade Brasileira de Química, 2008)
It is described in this paper the experimental observation of oscillatory dynamics during the electrocatalytic oxidation of methanol on platinum. Besides the previously reported potential oscillations, current oscillations ...
A comparative investigation of metal-support interactions on the catalytic activity of Pt nanoparticles for ethanol oxidation in alkaline medium
The effects of interactions of Pt nanoparticles with hybrid supports on reactivity towards ethanol oxidation in alkaline solution are investigated. Studies involve catalysts with identical Pt nanoparticles on six hybrid ...
Borohydride electrooxidation on Au and Pt electrodes
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
Direct borohydride fuel cells (DBFCs) are attractive energy generators for powering portable electronic devices, mainly due to their high energy density and number of electrons per borohydride ion. However, the lack of a ...