DNA-assisted electroless deposition of highly dispersed palladium nanoparticles on glassy carbon surface: Preparation and electrocatalytic properties

Oxygen reduction on Nafion-coated thin-film palladium electrodes

“…Studies of O 2 reduction on Pd single crystal electrodes have, however, suggested that Pd(1 0 0) is the most active and Pd(1 1 0) the least active low index plane [6]. Improved electrocatalytic properties for O 2 reduction have also been shown for PdNPs supported on carbon nanotubes [7,8] and PdNPs attached to the electrode substrate by DNA-assisted electroless deposition [9]. The activity of PdNPs incorporated into Nafion film, however, was rather low [10].…”

Palladium-modified polysulfonic acid-doped polyaniline layers for hydrazine oxidation in neutral solutions

“…Concentration dependent hydrazine oxidation peaks starting at about À0.7 V and centered at about À0.45 V and a diffusive tail (at E > 0.1 V) are characteristic for the two plots. A simple one-peak voltammetric behavior was observed so far in all studies involving dispersed palladium particles in hydrazine oxidation [17,20,[23][24][25][26][27][28][29][30][31][32]. In our experiments a second peak for the low Pd content specimen or rather a shoulder for the high Pd content specimen is observed in the potential region À0.2 V to À0.1 V. This peak occurs at potentials where the PANI-PAMPSA layer has completely undergone the oxidative transition and a significant loss (by a factor of 50) of conductivity has occurred [33].…”

Pd nanoparticle-modified electrodes for nonenzymatic hydrogen peroxide detection

“…Hence, nonenzymatic H 2 O 2 sensors based on Pd NPs are also given interest and studied. Pd NPs used for such purpose are commonly synthesized in a solution by a chemical route, such as electrodeposition [26][27][28], or chemical reductions of suitable Pd-containing species [25,29,30]. In such cases, the NPs bind loosely with the electrode and aggregate easily, which results in poor electron transfer and leads to reproducibility and stability problems.…”