Effects of impurities on the electroreduction of carbon dioxide on platinum electrodes in acid solutions

Journal Article · Sat Feb 01 00:00:00 EST 1992 · Journal of the Electrochemical Society; (United States)

OSTI ID:5420331

Huang, H ^[1]

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1. Dept. of Chemistry, Case-Western Reserve Univ., Cleveland, OH (US)

The electroreduction of carbon dioxide has been studied in this laboratory using electrochemical techniques and in situ Fourier transform infrared reflection absorption spectroscopy (FTIRRAS) on both polycrystalline and single-crystalline platinum electrodes in 0.1M HClO{sub 4} solution. On polycrystalline electrodes and two single-crystalline planes ((110) and (100)), the reduction reaction proceeds in the hydrogen absorption region and gives rise the polycrystalline electrode and Pt(110), and bridge-bonded Co on Pt(100). No. CO was detected on Pt(111). The introduction of CO{sub 2} in solution shows a similar effect on the Butterfly peaks of Pt(111) to that of specifically adsorbed anions, such as bisulfate. The has been attributed tentatively to the absorption of HCO{sub 3} in the potential region between the onset of the butterfly peaks and the formation of oxide. The IR absorption peak between 1418 and 1456 cm{sup {minus}1}, which is assigned to the absorbed HCO{sub 3}{sup {minus}}, shows a large positive shift with increasing potential (127 cm{sup {minus}1}/V). As part of the research on CO{sub 2} reduction, this paper examines the effects of impurities (Cl{sup {minus}}) and electrode rotation rates on Co{sub 2} reduction on polycrystalline Pt electrodes in 0.1M HClO{sub 4} solutions.

• OSTI ID: 5420331
• Journal Information: Journal of the Electrochemical Society; (United States), Vol. 139:2; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CARBON DIOXIDE
REDUCTION
PLATINUM
ELECTRODES
ABSORPTION SPECTRA
ADSORPTION
ELECTROCHEMICAL CELLS
FOURIER TRANSFORMATION
HYDROGEN
MONOCRYSTALS
POLYCRYSTALS
REDOX REACTIONS
RESEARCH PROGRAMS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTALS
ELEMENTS
INTEGRAL TRANSFORMATIONS
METALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
SORPTION
SPECTRA
TRANSFORMATIONS
TRANSITION ELEMENTS
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