On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water
Highly micro-mesoporous carbon electrodes have been synthesized by the polycondensation of resorcinol-formaldehyde-melamine mixtures in the presence of a carbon conductive additive. The materials showed high surface functionalization (N- and O- groups) provided by the precursors. Despite the low amount used, the conductive additive had a marked effect on the porosity of the aerogels; for a given series, the carbon black loaded materials showed similar micropore volumes and a more developed mesoporosity than the pristine aerogels. Furthermore, the activation treatment under CO2 atmosphere led to an increase in the surface area along with a widening of the mesoporosity. The synthesized aerogels were explored as electrodes for the electro-assisted removal of sodium chloride from saline water. A desalting capacity of 7.3 mg/g was obtained for monolith electrodes of sample MRF-Act/CB, along with an excellent chemical stability upon charge and discharge at high polarization voltages. Such good electrochemical performance is due to the combination of an adequate pore network and surface functionalization with an enhanced electrical conductivity achieved upon the incorporation of the carbon black additive during the polycondensation of the aerogel precursors.
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Elsevier
2015-04-25
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Subjects: | Carbon Aerogel, Electrosorption, Nitrogen doping, Carbon black, |
Online Access: | http://hdl.handle.net/10261/123452 http://dx.doi.org/10.13039/501100004837 |
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dig-incar-es-10261-1234522018-11-15T12:30:26Z On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water Rasines, G. Lavela, P. Macías, Carlos Zafra, M. C. Tirado, J. L. Ovín Ania, María Concepción Ministerio de Ciencia e Innovación (España) Carbon Aerogel Electrosorption Nitrogen doping Carbon black Highly micro-mesoporous carbon electrodes have been synthesized by the polycondensation of resorcinol-formaldehyde-melamine mixtures in the presence of a carbon conductive additive. The materials showed high surface functionalization (N- and O- groups) provided by the precursors. Despite the low amount used, the conductive additive had a marked effect on the porosity of the aerogels; for a given series, the carbon black loaded materials showed similar micropore volumes and a more developed mesoporosity than the pristine aerogels. Furthermore, the activation treatment under CO2 atmosphere led to an increase in the surface area along with a widening of the mesoporosity. The synthesized aerogels were explored as electrodes for the electro-assisted removal of sodium chloride from saline water. A desalting capacity of 7.3 mg/g was obtained for monolith electrodes of sample MRF-Act/CB, along with an excellent chemical stability upon charge and discharge at high polarization voltages. Such good electrochemical performance is due to the combination of an adequate pore network and surface functionalization with an enhanced electrical conductivity achieved upon the incorporation of the carbon black additive during the polycondensation of the aerogel precursors. The authors are indebted to the MICINN (Contract IPT-2011-1450-310000 (ADECAR), and CTM2011/23378) for the financial support. We also thank the fruitful collaboration of Isolux Ingeniería, S.A., Fundación Imdea Energia and Proingesa. University of Córdoba thanks to SCAI for technical and FEDER and Junta de Andalucía (FQM-288) for financial supports. Peer reviewed 2015-10-16T07:26:02Z 2015-10-16T07:26:02Z 2015-04-25 artículo http://purl.org/coar/resource_type/c_6501 Electrochimica Acta 170: 154-163 (2015) 0013-4686 http://hdl.handle.net/10261/123452 10.1016/j.electacta.2015.04.137 http://dx.doi.org/10.13039/501100004837 en #PLACEHOLDER_PARENT_METADATA_VALUE# MICINN/CTM2011/23378 Postprint http://dx.doi.org/10.1016/j.electacta.2015.04.137 Sí open Elsevier |
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Carbon Aerogel Electrosorption Nitrogen doping Carbon black Carbon Aerogel Electrosorption Nitrogen doping Carbon black |
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Carbon Aerogel Electrosorption Nitrogen doping Carbon black Carbon Aerogel Electrosorption Nitrogen doping Carbon black Rasines, G. Lavela, P. Macías, Carlos Zafra, M. C. Tirado, J. L. Ovín Ania, María Concepción On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
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Highly micro-mesoporous carbon electrodes have been synthesized by the polycondensation of resorcinol-formaldehyde-melamine mixtures in the presence of a carbon conductive additive. The materials showed high surface functionalization (N- and O- groups) provided by the precursors. Despite the low amount used, the conductive additive had a marked effect on the porosity of the aerogels; for a given series, the carbon black loaded materials showed similar micropore volumes and a more developed mesoporosity than the pristine aerogels. Furthermore, the activation treatment under CO2 atmosphere led to an increase in the surface area along with a widening of the mesoporosity. The synthesized aerogels were explored as electrodes for the electro-assisted removal of sodium chloride from saline water. A desalting capacity of 7.3 mg/g was obtained for monolith electrodes of sample MRF-Act/CB, along with an excellent chemical stability upon charge and discharge at high polarization voltages. Such good electrochemical performance is due to the combination of an adequate pore network and surface functionalization with an enhanced electrical conductivity achieved upon the incorporation of the carbon black additive during the polycondensation of the aerogel precursors. |
author2 |
Ministerio de Ciencia e Innovación (España) |
author_facet |
Ministerio de Ciencia e Innovación (España) Rasines, G. Lavela, P. Macías, Carlos Zafra, M. C. Tirado, J. L. Ovín Ania, María Concepción |
format |
artículo |
topic_facet |
Carbon Aerogel Electrosorption Nitrogen doping Carbon black |
author |
Rasines, G. Lavela, P. Macías, Carlos Zafra, M. C. Tirado, J. L. Ovín Ania, María Concepción |
author_sort |
Rasines, G. |
title |
On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
title_short |
On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
title_full |
On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
title_fullStr |
On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
title_full_unstemmed |
On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
title_sort |
on the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water |
publisher |
Elsevier |
publishDate |
2015-04-25 |
url |
http://hdl.handle.net/10261/123452 http://dx.doi.org/10.13039/501100004837 |
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