Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination

We present a photoactive composite material for water decontamination consisting of non-purified commercial multiwalled carbon nanotubes (CNT(NP)s) supported on an electrospun polymeric mat made of core–sheath polyacrylonitrile–polypyrrole nanofibers. This is the first system that specifically explo...

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Detalles Bibliográficos
Autores principales: Capilli, Gabriele, Rodríguez Sartori, Damián Ezequiel, González, Mónica Cristina, Laurenti, Enzo, Minero, Claudio, Calza, Paola
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Exactas
Química
Carbon nanotubes
Catalytic metal oxide nanoparticles
Water decontamination
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124006
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124006
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Carbon nanotubes
Catalytic metal oxide nanoparticles
Water decontamination
spellingShingle Ciencias Exactas
Química
Carbon nanotubes
Catalytic metal oxide nanoparticles
Water decontamination
Capilli, Gabriele
Rodríguez Sartori, Damián Ezequiel
González, Mónica Cristina
Laurenti, Enzo
Minero, Claudio
Calza, Paola
Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
topic_facet Ciencias Exactas
Química
Carbon nanotubes
Catalytic metal oxide nanoparticles
Water decontamination
description We present a photoactive composite material for water decontamination consisting of non-purified commercial multiwalled carbon nanotubes (CNT(NP)s) supported on an electrospun polymeric mat made of core–sheath polyacrylonitrile–polypyrrole nanofibers. This is the first system that specifically exploits the superior photocatalytic activity of CNT(NP)s compared with the purified carbon nanotubes usually employed. A CNT(NP) still contains the catalytic metal oxide nanoparticles (NPs) used for its synthesis, embedded in the nanotube structure. Under UV-visible irradiation, these NPs generate highly reactive ˙OH radicals capable of degrading the organic molecules adsorbed on the nanotube. Photocatalytic tests on the composite material show that CNT(NP)s act mostly as a source of photogenerated charge carriers. The adsorption of target substrates occurs preferentially onto the polypyrrole sheath, which shuttles the reactive carriers from CNT(NP)s to the substrates. In addition, UV-visible irradiation of semiconducting polypyrrole generates radical species that directly react with the adsorbed substrates. All synthetic procedures reported are scalable and sustainable. This mechanically resistant and flexible composite overcomes one of the weakest aspects of water treatments that employ suspended nanocatalysts, namely the expensive and poorly scalable recovery of the catalyst through nanofiltration. All these features are required for large-scale photocatalytic treatments of polluted water.
format Articulo
Articulo
author Capilli, Gabriele
Rodríguez Sartori, Damián Ezequiel
González, Mónica Cristina
Laurenti, Enzo
Minero, Claudio
Calza, Paola
author_facet Capilli, Gabriele
Rodríguez Sartori, Damián Ezequiel
González, Mónica Cristina
Laurenti, Enzo
Minero, Claudio
Calza, Paola
author_sort Capilli, Gabriele
title Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
title_short Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
title_full Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
title_fullStr Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
title_full_unstemmed Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
title_sort non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/124006
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