Glycerol electrooxidation on Pd, Pt and Au nanoparticles supported on carbon ceramic electrode in alkaline media

Rhodium Nanoparticle-Loaded Carbon Black Electrocatalyst for the Glycerol Oxidation Reaction in Alkaline Medium

“…In terms of the GOR current density, the Au/CB electrode was greater than the Pt/CB and Pd/CB electrodes. These trends were in agreement with the previous literatures [8]- [10]. On the other hand, the onset and peak potentials of the GOR current densities for the Rh/CB electrode were ca.…”

“…For the Pt/CB electrode, two couples of redox waves due to hydrogen adsorption/desorption were observed in the potential range between −0.75 and −0.5 V vs. Hg/HgO [10], whereas the oxidation current due to the adsorbed OH (Pt-OH ad ) formation began to flow around −0.45 V in the forward sweep and its reduction current began to flow around 0 V in the backward sweep. In the CV of the Pd/CB electrode, the redox waves owing to hydrogen adsorption (absorption)/desorption were observed in the potential range below −0.4 V, whereas the oxidation current caused by the surface Pd-OH ad formation [8] [26] began to flow around −0.15 V in the forward sweep and its reduction current had a peak around −0.18 V in the backward sweep. In the CV of the Au/CB electrode, the gold oxide reduction peak was observed at ca.…”

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

“…At low OH − concentration (<0.3 M), the peak potential shifts toward more negative values with an increase in OH − concentration, because as mentioned already the anodic current density in forward scan mainly comes from the oxidation of methanol and increasing the concentration of OH -around the PtNPs increase the bifunctional effect between the OH -and PtNPs [57][58][59] to remove the intermediate carbonaceous species and contribute to the low poisoning. On the other hand, in more alkaline electrolytes (>>0.3 M) the adsorption of OH -prevents the methanol adsorption on the electrocatalyst sites and so the reaction rate of methanol oxidation decreases [63]. Figure 8 shows the effect of methanol concentrations on the electrooxidation current density of this fuel at the PtNPs/Ni-Al LDH/GCE in 0.5 M NaOH solution.…”

A Practical Approach in Glycerol Oxidation for the Development of A Glycerol Fuel Cell

“…The second peak corresponds to the glycerol oxidation which is presented in the literature by different authors [14][15][16][17][18][19][20][21][22]. In general, the catalytic activity for glycerol oxidation is observed with Pt, Cu, and Au electrodes.…”

“…The following materials have been reported: Pt [12], Pt-Ru [13], Au, Pd [14,15] and Ag [16]. In the case of gold there are several advantages over other catalyst used for glycerol oxidation, e.g.…”