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Título : Dynamic Raman Spectroelectrochemistry of Single Walled Carbon Nanotubes modified electrodes using a Langmuir-Schaefer method
Autor : Ibáñez, David
Romero, Edna Cecilia
Colina, Álvaro
Heras, Aránzazu
Publicado en: Electrochimica Acta. 2014, V. 129, n. 20, p. 171–176
Editorial : Elsevier
Fecha de publicación : may-2014
ISSN : 0013-4686
DOI: 10.1016/j.electacta.2014.02.094
Resumen : Raman spectroelectrochemistry is a fundamental technique to characterize single walled carbon nanotube (SWCNT) films. In this work, we have performed the study of SWCNT films transferred to a glassy carbon electrode using a Langmuir-Schaefer method. Langmuir balance has allowed us to control the characteristics of the film that can be easily transferred to the electrode support. Time-resolved Raman spectroelectrochemistry experiments at scan rates between 20 and 400 mV s−1 were done in two different solvents, water and acetonitrile. Spectroscopic results indicate that electron transfer of carbon nanotubes is a very fast process. The electrochemical process is reversible in acetonitrile and, on the contrary, nanotubes are degraded when the characterization is performed in water being the degradation independent on the scan rate.
Palabras clave: Spectroelectrochemistry
Electrochemistry
Raman spectroscopy
Langmuir balance
Single walled carbon nanotube
Materia: Química analítica
Chemistry, Analytic
URI : http://hdl.handle.net/10259/3853
Versión del editor: http://dx.doi.org/10.1016/j.electacta.2014.02.094
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