Electroreduction-Oxidation and Quantitative Determination of CO2 on A New SPE-Based System

Liu, Jun; Yan, Heqing; Wang, Kangli; Wang, E'Feng
July 2004
Journal of Applied Electrochemistry;Jul2004, Vol. 34 Issue 7, p757
Academic Journal
Electroreduction–oxidation of CO2 was studied by anodic stripping voltammetry on different SPE electrodes. The catalytic capacity of these electrodes for CO2 electroreduction was examined by comparing the oxidation charges of both the products (R(CO2)) produced by electroreduction of CO2 (Qox) and the adsorbed hydrogen (QH). SEM analysis was used to understand the catalytic capacity of different electrodes. A new electrochemical system based on a PtAu-SPE electrode, which had the best comprehensive catalytic capacity among the investigated electrodes, showed a satisfactory linear response (Qox) to CO2 concentration in the range 0–40% when adsorption time tad ⩽ 1 min. In addition, this system possessed advantages such as no leakage, high efficiency, excellent reproducibility and good stability. Furthermore, the composition of R(CO2) on the Pt-SPE and the Pt alloy-SPE electrodes was investigated by XPS analysis.


Related Articles

  • Electrochemical reduction of O2 and NO on Ni, Pt and Au. Hansen, K. K. // Journal of Applied Electrochemistry;May2008, Vol. 38 Issue 5, p591 

    The electrochemical reduction of oxygen and nitric oxide was studied using cyclic voltammetry on point electrodes of Ni, Pt and Au in the temperature range 400–600 °C. All the materials were more active towards the reduction of oxygen than towards the reduction of nitric oxide, except...

  • Towards the mechanism of electrochemical hydrogen storage in nanostructured carbon materials. Jurewicz, K.; Frackowiak, E.; Béguin, F. // Applied Physics A: Materials Science & Processing;2004, Vol. 78 Issue 7, p981 

    The mechanism of electrochemical hydrogen storage in a nanostructured carbon electrode using the electrodecomposition of KOH and H[sub 2]SO[sub 4] aqueous solutions has been investigated by means of galvanostatic and voltammetry techniques. The role of charging the electrical double layer is...

  • Electrochemical study of riboflavin adsorbed on a graphite electrode. Malinauskas, Albertas // Chemija;2008, Vol. 19 Issue 2, p1 

    Electrochemical redox processes of riboflavin adsorbed on a graphite electrode have been studied by cyclic voltammetry, and two separate steps for anodic oxidation of a reduced form of riboflavin have been found at a sufficiently fast potential sweep. The midpoint redox potential (-0.460 ±...

  • Selective Determination of Epinephrine in the Presence of Ascorbic Acid and Dopamine Using a Glassy Carbon Electrode Modified with Valine. Xia Li; Meifeng Chen; Xinying Ma; Xianjie Lin // International Journal of Chemistry;Feb2010, Vol. 2 Issue 1, p206 

    A glassy carbon electrode (GCE) modified with valine was used for the sensitive volt metric determination of epinephrine (EP). The electrochemical response characteristics of the modified electrode toward EP, ascorbic acid (AA) and dopamine (DA) were investigated by cyclic voltammetry (CV). The...

  • Investigations of Quantitative Reducibility Determination and Reducibility Variations of Neutral Hydrogen-Dissolved Water by Electrochemical Analysis. Weon Kyung Choi // International Journal of Electrochemical Science;2014, Vol. 9 Issue 12, p7266 

    Electrolysis using tap water(TW) in a batch type electrolyzer not separated into the anode chamber and cathode chamber produce neutral hydrogen-dissolved water(HDW) that dissolved gas hydrogen. Hydrogen in HDW was decreased with increased waiting time; subsequently, the decrement of hydrogen was...

  • Reduction of metol on mechanically renewed metal electrodes. Skvortsova, L.; Kiryushov, V. // Journal of Analytical Chemistry;Jan2010, Vol. 65 Issue 1, p82 

    The electroreduction of metol on mechanically renewed metallic electrodes is studied by direct voltammetry with linear potential sweep. Reduction peaks of metol are found in a neutral supporting electrolyte (0.02–0.5 M Na2SO4) on nickel, silver, and mercury electrodes before the potential...

  • Electrochemical reduction of hydrogen peroxide on stainless steel. Patra, S.; Munichandraiah, N. // Journal of Chemical Sciences;Sep2009, Vol. 121 Issue 5, p675 

    Electrochemical reduction of hydrogen peroxide is studied on a sand-blasted stainless steel (SSS) electrode in an aqueous solution of NaClO4. The cyclic voltammetric reduction of H2O2 at low concentrations is characterized by a cathodic peak at -0·40 V versus standard calomel electrode (SCE)....

  • Electrochemical Reduction of the Imidazolinone Herbicide Imazamethabenz Acid on Mercury and Carbon. Pintado, Sara; Ruiz Montoya, Mercedes; Rodríguez Mellado, José Miguel // International Journal of Electrochemical Science;Jul2011, Vol. 6, p2541 

    This paper presents polarographic and voltammetric studies of the reduction of the herbicide imazamethabenz acid on mercury electrodes. The electrochemical studies were performed from strongly acidic media (0.1 to 2.7 M H2 SO4) to pH range 12. The overall reduction process involves the uptake of...

  • Electrocatalytic Activity of Nanoporous Perovskite La1-xCaxCoO3 Towards Hydrogen Peroxide Reduction in Alkaline Medium. Shuxin Zhuang; Suqin Liu; Chenghuan Huang; Feiyue Tu; Jinbao Zhang; Yanhua Li // International Journal of Electrochemical Science;Jan2012, Vol. 7 Issue 1, p338 

    Perovskite-type series of La1-xCaxCoO3 compounds were synthesized by a modified amorphous citrate precursor method. Their catalytic activities for hydrogen peroxide electroreduction in 3.0 mol dm-3 KOH at 25 ºC were evaluated by cyclic voltammetry and galvanostatic measurement. The influence...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics