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Development of an Alternative Route for Production of Glassy Polymeric Carbon Electrodes in Laboratorial Scale
Author(s) -
Oiye Érica Naomi,
de Andrade José Fernando,
Balbo Valdir Roberto,
dos Santos André Luiz,
de Oliveira Marcelo Firmino
Publication year - 2011
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200900127
Subject(s) - materials science , sodium hydroxide , glassy carbon , ammonium hydroxide , cyclic voltammetry , electrochemistry , carbon fibers , phenol , electrode , composite material , inorganic chemistry , organic chemistry , chemistry , composite number
A complete alternative and cheaper route for production of glassy polymeric carbon electrodes in laboratorial scale is described. Two kinds of polyphenolic resins were synthesized by mixing the precursors phenol and formaldehyde with 1) ammonium or 2) sodium hydroxide as catalyst. A shorter treatment time of 3.5 days (from 25 to 1000 °C) was employed for preparation of the electrodic material compared with the 5–7 day period proposed in the literature. The obtained materials were inserted into conventional hollow plastic bodies and electrically contacted with copper wire. After proper polishing, the electrodic materials were tested as working electrodes by cyclic voltammetry technique. The data demonstrated that the use of sodium hydroxide causes peculiar problems such as alkaline residues in the electrodic materials and subsequent fading of final product. On the other hand, the materials obtained by the ammonium hydroxide route presented good results in terms of mechanical resistance, glassy appearance, conductivity and voltammetric response, allowing for application of such materials in electrochemistry.