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Analysis of the effect of polypyrrole synthesis conditions on its capacity to reduce hexavalent chromium |
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| Authors: | FJ Rodriguez LA García de la Rosa A Alatorre J Ibaez L Godinez S Gutierrez P Herrasti |
| Affiliation: | aElectrochemistry Department, Centro de investigación y desarrollo tecnológico en electroquímica s.c., Pedro Escobedo, Queretaro 76700, Mexico bUniversidad de Guanajuato, Instituto de Investigaciones Científicas, Cerro de la Veneda s/n, Guanajuato, Gto. 36070, Mexico cCentro Mexicano de Química en Microescala, Departamento de Ciencias Básicas, Universidad Iberoamericana, Prol. Reforma 880, 01210 México, Mexico dUniversidad Autónoma de Madrid, Facultad de Ciencias, Dept. Química Física Aplicada, Madrid 28049, Spain |
| Abstract: | This paper reports the capacity of polypyrrole to reduce toxic hexavalent chromium (Cr(VI)). The influence of using different electrolytes during the polymer's synthesis has been studied. To improve the reduction of Cr(VI), the parameters considered were the polypyrrole morphology and the amount of conducting polymer. Polypyrrole obtained by cyclic voltammetry at a low sweep rate using KBr as supporting electrolyte showed better performance for Cr(VI) reduction compared to coatings obtained by constant potential or cyclic voltammetry at high sweep rates. |
| Keywords: | Polypyrrole Hexavalent chromium Electropolymerisation |
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