Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
181954 | Electrochemistry Communications | 2007 | 5 Pages |
Abstract
Cyclic voltammetry was performed on activated carbon particles in a microelectrode setup to investigate the behaviour of an activated carbon with oxygen functionalities. Quinoid type redox peaks were clearly seen in the potential region around −0.5 V vs. Hg/HgO. After polarization below −0.4 V, an anodic peak confirms previous studies using a pristine carbon, but in the present work much higher in intensity. In addition, a corresponding cathodic peak, not previously reported, was also found. The appearance of this pair of peaks in a functionalized carbon may be connected to reversible hydrogen adsorption together with Faradaic reactions involving oxygenated functional groups.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
Helena Malmberg, Vanesa Ruiz, Clara Blanco, Ricardo Santamaría, Anders Lundblad, Pehr Björnbom,