Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels

Nanofluidic reverse electrodialysis systems based on track-etched nanochannels are promising devices for new eco-friendly ways of sustainable energy generation. In recent years, several works have been focused on the influence of parameters such as pH, ionic strength, and chemical nature of the elec...

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Autores principales: Laucirica, Gregorio, Albesa, Alberto Gustavo, Toimil Molares, María Eugenia, Trautmann, Christina, Marmisollé, Waldemar Alejandro, Azzaroni, Omar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Exactas
Química
Concentration polarization
Nanofluidics
Ion transport
Osmotic power generation
Blue energy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/151346
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-151346
record_format dspace
spelling I19-R120-10915-1513462023-04-13T04:06:48Z http://sedici.unlp.edu.ar/handle/10915/151346 issn:2211-2855 Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels Laucirica, Gregorio Albesa, Alberto Gustavo Toimil Molares, María Eugenia Trautmann, Christina Marmisollé, Waldemar Alejandro Azzaroni, Omar 2020-05 2023-04-12T14:37:14Z en Ciencias Exactas Química Concentration polarization Nanofluidics Ion transport Osmotic power generation Blue energy Nanofluidic reverse electrodialysis systems based on track-etched nanochannels are promising devices for new eco-friendly ways of sustainable energy generation. In recent years, several works have been focused on the influence of parameters such as pH, ionic strength, and chemical nature of the electrolyte on the device performance. However, despite the relevance of the geometry on the channel properties, the influence of the nanochannel shape on the performance of energy conversion remains almost unexplored. In this work, we present an experimental study – complemented with Poisson–Nernst–Planck simulations – that describes how the shape of the nanochannels strongly affects the energy conversion performance of single bullet-shaped nanochannels created on PET foils by the ion-track-etching method. To test optimal parameters for energy conversion and selectivity, the performance was investigated by varying the channel effective diameter as well as the pH and the electrolyte gradient. With a maximum output power of 80 pW, this system reveals the best value reported for a bare single track-etched nanochannel. Therefore, this work experimentally demonstrates that it is possible to obtain high power output by means of a careful choice of channel geometry and etching conditions, in addition to other experimental parameters such as pH and electrolyte gradient. We believe that these results offer a promising framework to explore new design concepts in nanofluidic osmotic power generators. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Concentration polarization
Nanofluidics
Ion transport
Osmotic power generation
Blue energy
spellingShingle Ciencias Exactas
Química
Concentration polarization
Nanofluidics
Ion transport
Osmotic power generation
Blue energy
Laucirica, Gregorio
Albesa, Alberto Gustavo
Toimil Molares, María Eugenia
Trautmann, Christina
Marmisollé, Waldemar Alejandro
Azzaroni, Omar
Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels
topic_facet Ciencias Exactas
Química
Concentration polarization
Nanofluidics
Ion transport
Osmotic power generation
Blue energy
description Nanofluidic reverse electrodialysis systems based on track-etched nanochannels are promising devices for new eco-friendly ways of sustainable energy generation. In recent years, several works have been focused on the influence of parameters such as pH, ionic strength, and chemical nature of the electrolyte on the device performance. However, despite the relevance of the geometry on the channel properties, the influence of the nanochannel shape on the performance of energy conversion remains almost unexplored. In this work, we present an experimental study – complemented with Poisson–Nernst–Planck simulations – that describes how the shape of the nanochannels strongly affects the energy conversion performance of single bullet-shaped nanochannels created on PET foils by the ion-track-etching method. To test optimal parameters for energy conversion and selectivity, the performance was investigated by varying the channel effective diameter as well as the pH and the electrolyte gradient. With a maximum output power of 80 pW, this system reveals the best value reported for a bare single track-etched nanochannel. Therefore, this work experimentally demonstrates that it is possible to obtain high power output by means of a careful choice of channel geometry and etching conditions, in addition to other experimental parameters such as pH and electrolyte gradient. We believe that these results offer a promising framework to explore new design concepts in nanofluidic osmotic power generators.
format Articulo
Articulo
author Laucirica, Gregorio
Albesa, Alberto Gustavo
Toimil Molares, María Eugenia
Trautmann, Christina
Marmisollé, Waldemar Alejandro
Azzaroni, Omar
author_facet Laucirica, Gregorio
Albesa, Alberto Gustavo
Toimil Molares, María Eugenia
Trautmann, Christina
Marmisollé, Waldemar Alejandro
Azzaroni, Omar
author_sort Laucirica, Gregorio
title Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels
title_short Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels
title_full Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels
title_fullStr Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels
title_full_unstemmed Shape matters: Enhanced osmotic energy harvesting in bullet-shaped nanochannels
title_sort shape matters: enhanced osmotic energy harvesting in bullet-shaped nanochannels
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/151346
work_keys_str_mv AT lauciricagregorio shapemattersenhancedosmoticenergyharvestinginbulletshapednanochannels
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AT toimilmolaresmariaeugenia shapemattersenhancedosmoticenergyharvestinginbulletshapednanochannels
AT trautmannchristina shapemattersenhancedosmoticenergyharvestinginbulletshapednanochannels
AT marmisollewaldemaralejandro shapemattersenhancedosmoticenergyharvestinginbulletshapednanochannels
AT azzaroniomar shapemattersenhancedosmoticenergyharvestinginbulletshapednanochannels
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