On the nature of reduced carbon dioxide☆
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Cited by (99)
4.15 - Liquid Fueled Fuel Cells
2022, Comprehensive Renewable Energy, Second Edition: Volume 1-9Surface engineering of nano-ceria facet dependent coupling effect on Pt nanocrystals for electro-catalysis of methanol oxidation reaction
2020, Chemical Engineering JournalCitation Excerpt :MOR is a complex multistep reaction that requires catalytic sites for alcohol adsorption and dehydrogenation [39,40]. The electrooxidation of methanol on Pt would follow a dual-path mechanism, direct and indirect pathway, and the formation of CO in the indirect pathway will seriously poison the catalyst activity [39,41,42]. A bi-functional mechanism is often invoked for understanding the catalytic promotion effect, and this definition means joint activities of both metals, Pt being the one adsorbing and dissociating methanol as real active sites and the other oxophilic component, the one oxidizing the adsorbed residues like CO at low potentials.
CO <inf>2</inf> electroreduction characteristics of Pt-Ru/C powder and Pt-Ru sputtered electrodes under acidic condition
2018, Applied Surface ScienceCitation Excerpt :However, the CO2-reduced species are strongly adsorbed on the surface of the Pt electrode [15–17]. During the adsorption phenomenon, the CO2 reductant adsorbed on the Pt electrode surface is suggested to be CO based on IR analyses [15–23]. The differential electrochemical mass spectrometric result of the CO2 electrode reaction by stripping voltammetry, described in our previous report, also supports the adsorption of CO [24].
Study of CO<inf>2</inf> reduction at Pt-Ru electrocatalyst in polymer electrolyte cell by differential electrochemical mass spectrometry and liquid chromatography
2018, Electrochimica ActaCitation Excerpt :To the best of our knowledge, the production process of not only formic acid and acetic acid, but also lactic acid during the CO2 electroreduction with the Pt-Ru catalyst at around its theoretical potential was found for the first time in the present study, although the major production process of the CO2 electroreduction at the Pt-Ru catalyst remains unclear at present. One possible major process is the CO adsorption [32–34] since the DEMS result of the CO2 electrode reaction by stripping voltammetry at the Pt-Ru/C electrocatalyst demonstrated the CO adsorption [20]. It could also be considered that other carboxylic acids having higher molecular weight than those detected in this study is generated since the intensity of m/z 45 significantly increases with the increase in the reduction current in Figs. 3a and 4.
Pt-Ru/C anode performance of polymer electrolyte fuel cell under carbon dioxide atmosphere
2016, Electrochimica ActaCitation Excerpt :Although CO2 is reduced at −1.5 V vs. NHE at Cu and Hg electrodes in a CO2-saturated aqueous solution, this electrode potential has no influence on the electrode reaction of the PEFC [14–19]. In contrast, when using Pt, Ir, Pd, Ru, Rh, Au, and Ag electrodes, CO2 electroreduction occurs at around −0.10–0.30 V vs. RHE, the potential region of which contains the electrode potential of the H2 oxidation reaction [20–30]. Especially, the CO2 is reduced at the Pt electrode from 0.06–0.3 V vs. DHE, and its reductant strongly adsorbs on the electrode surface [28,29].
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Manuscript received 12 December 1966.