Buscar
Mostrando ítems 31-40 de 194
A surface-enhanced infrared absorption spectroscopic (SEIRAS) study of the oscillatory electro-oxidation of methanol on platinum
(ELSEVIER SCIENCE SA, 2010)
The oscillatory electro-oxidation of methanol was studied by means of in situ infrared (IR) spectroscopy in the attenuated total reflection (ATR) configuration using a platinum film on a Si prism as working electrode. The ...
The effect of ultra-low proton concentration on the electrocatalytic reduction of nitrate over platinum
(ELSEVIER SCIENCE BV, 2008)
The electrocatalytic reduction of NO3- (aq) over platinum has been investigated in sulfuric acid solutions with proton concentrations between 1 mM and 50 mM. Cyclic voltammetry indicates that for [H+] < 10 mM, NO3- (aq) ...
Potential oscillations in a proton exchange membrane fuel cell with a Pd-Pt/C anode
(ELSEVIER SCIENCE BV, 2011)
We report in this paper the occurrence of potential oscillations in a proton exchange membrane fuel cell (PEMFC) with a Pd-Pt/C anode, fed with H(2)/100 ppm CO, and operated at 30 degrees C. We demonstrate that the use of ...
Oscillatory electro-oxidation of glycerol on platinum
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
This paper describes the experimental study of the oscillatory electro-oxidation of glycerol on platinum under galvanostatic control. The system was investigated in both acidic and alkaline media and for different glycerol ...
Open circuit interaction of borohydride with oxidized platinum surfaces
(ELSEVIER SCIENCE INCNEW YORK, 2012)
An interesting method to investigate the effect of fuel crossover in low temperature fuel cells consists of studying the open circuit interaction between the reducing fuel and an oxide-covered catalyst. Herein we report ...
Studies on the Electrocatalytic Reduction of Hydrogen Peroxide on a Glassy Carbon Electrode Modified With a Ruthenium Oxide Hexacyanoferrate Film
(ELECTROCHEMICAL SCIENCE GROUP, 2011)
The electrocatalytic reduction of hydrogen peroxide on a glassy carbon (GC) electrode modified with a ruthenium oxide hexacyanoferrate (RuOHCF) was investigated using rotating disc electrode (RDE) voltammetry aiming to ...
Effect of Ni on Pt/C and PtSn/C prepared by the Pechini method
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
Different compositions of Pt, PtNi, PtSn, and PtSnNi electrocatalysts supported on carbon Vulcan XC-72 were prepared through thermal decomposition of polymeric precursors. The nanoparticles were characterized by morphological ...
Hydrogen oxidation on ordered intermetallic phases of platinum and tin – a combined experimental and theoretical study
(Elsevier Science, 2012-09)
Hydrogen oxidation on the surfaces of the intermetallic compounds Pt3Sn, PtSn and PtSn2 has been studied by the rotating disc electrode technique. Pt3Sn and PtSn were found to be good catalysts, about as good as Pt, while ...
Electro-Oxidation of Methanol on Pt-Ru Nanostructured Catalysts Electrodeposited onto Electroactivated Carbon Fiber Materials
(Wiley VCH Verlag, 2010-02)
The surface of different carbon substrates, such as glassy carbon (GC), graphite cloth (GC-10), graphite felt (GF-S2), and carbon fiber paper (CFP) was modified by electrochemical treatment to generate high concentrations ...
Driving the Oxygen Evolution Reaction by Nonlinear Cooperativity in Bimetallic Coordination Catalysts
(American Chemical Society, 2016-03)
Developing efficient catalysts for electrolysis, in particular for the oxygen evolution in the anodic half cell reaction, is an important challenge in energy conversion technologies. By taking inspiration from the catalytic ...