Electrooxidation of formic acid at a platinum electrode modified with aniline or polyaniline

Enhanced electrocatalytic activity of Pt nanoparticles modified with PPy-HEImTfa for electrooxidation of formaldehyde

“…Analyses of Figs. 5-7 confirm that the modified PPy-HEImTfa film is able to catalyze the oxidation of poisoning intermediate CO from potential 500 mV, and the poisoning effect of CO on PPy-HEImTfa/nm-Pt is weaker than that on the bulk nm-Pt [13].…”

“…When the nm-Pt catalyst is modified by the PPy-HEImTfa film, the surface characters of nm-Pt are changed and ameliorated. Electrocatalytic reactions are surface processes, and the synergetic effect between Pt and PPy-HEImTfa is helpful to enhance the electrocatalytic activity and stability of the nm-Pt catalysts for formaldehyde electrooxidation [8][9][10][11][12][13].…”

“…One of the most commonly used methods is to electrodeposit nm-Pts onto a conducting polymer matrix (nm-Pt/ CP), such as polyaniline (PAn) and polypyrrole (PPy), which possess high electronic conductivity and large surface area that are necessary for efficient electrocatalysis [7][8][9][10][11][12]. As compared with bare nm-Pts, the nm-Pt/CP always displays better electrocatalytic activity for oxidation of SOM with the synergetic effect between Pt and conducting polymers [8][9][10][11][12][13]. But the poisoning effect of CO on nmPt/CP is still obvious [14,15].…”

The electrocatalytic oxidation of ascorbic acid on polyaniline film synthesized in the presence of camphorsulfonic acid

“…These properties are favorable to its applications in rechargeable batteries [1][2][3] and electrocatalysis [4][5][6][7][8][9][10]. However, the energy density and the catalytic activity of PAN are limited by the pH value, since PAN has little electrochemical activity at pH > 4; the potential range of the electroactivity for PAN decreases with increasing pH value [11], and its redox peaks disappear in the cyclic voltammetry for pH > 5.…”

Nanoparticles of Pt/HxMoO3 electrodeposited in poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) as the electrocatalyst for methanol oxidation

“…The T value of PEDOT-PSSPt/H x MoO 3 is higher than that (T = 44 min) of the Pt/H x MoO 3 electrode. Here, the PEDOT matrix may influence the electro-oxidation of small organic molecules [42]. The polymer may: (1) hinder the formation of strongly absorbed poisonous species; (2) catalyze the oxidation of strongly adsorbed poisonous species; and (3) catalyze the oxidation of weekly adsorbed poisonous species.…”