Cargando…
CO(2)-Derived Nanocarbons with Controlled Morphology and High Specific Capacitance
[Image: see text] The conversion of CO(2) to nanocarbons addresses a dual goal of harmful CO(2) elimination from the atmosphere along with the production of valuable nanocarbon materials. In the present study, a simple one-step metallothermic CO(2) reduction to nanocarbons was performed at 675 °C wi...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10433508/ https://www.ncbi.nlm.nih.gov/pubmed/37599958 http://dx.doi.org/10.1021/acsomega.3c03207 |
_version_ | 1785091662240808960 |
---|---|
author | Giannakopoulou, Tatiana Todorova, Nadia Plakantonaki, Niki Vagenas, Michail Sakellis, Elias Papargyriou, Despoina Katsiotis, Marios Trapalis, Christos |
author_facet | Giannakopoulou, Tatiana Todorova, Nadia Plakantonaki, Niki Vagenas, Michail Sakellis, Elias Papargyriou, Despoina Katsiotis, Marios Trapalis, Christos |
author_sort | Giannakopoulou, Tatiana |
collection | PubMed |
description | [Image: see text] The conversion of CO(2) to nanocarbons addresses a dual goal of harmful CO(2) elimination from the atmosphere along with the production of valuable nanocarbon materials. In the present study, a simple one-step metallothermic CO(2) reduction to nanocarbons was performed at 675 °C with the usage of a Mg reductant. The latter was employed alone and in its mixture with ferrocene, which was found to control the morphology of the produced nanocarbons. Scanning electron microscopy (SEM) analysis reveals a gradual increase in the amount of nanoparticles with different shapes and a decrease in tubular nanostructures with the increase of ferrocene content in the mixture. A possible mechanism for such morphological alterations is discussed. Transmission electron microscopy (TEM) analysis elucidates that the nanotubes and nanoparticles gain mainly amorphous structures, while sheet- and cloud-like morphologies also present in the materials possess significantly improved crystallinity. As a result, the overall crystallinity was preserved constant for all of the samples, which was confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques. Finally, electrochemical tests demonstrated that the prepared nanocarbons retained high specific capacitance values in the range of 200–310 F/g (at 0.1 V/s), which can be explained by the measured high specific surface area (650–810 m(2)/g), total pore volume (1.20–1.55 cm(3)/g), and the degree of crystallinity. The obtained results demonstrate the suitability of ferrocene for managing the nanocarbons’ morphology and open perspectives for the preparation of efficient “green” nanocarbon materials for energy storage applications and beyond. |
format | Online Article Text |
id | pubmed-10433508 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-104335082023-08-18 CO(2)-Derived Nanocarbons with Controlled Morphology and High Specific Capacitance Giannakopoulou, Tatiana Todorova, Nadia Plakantonaki, Niki Vagenas, Michail Sakellis, Elias Papargyriou, Despoina Katsiotis, Marios Trapalis, Christos ACS Omega [Image: see text] The conversion of CO(2) to nanocarbons addresses a dual goal of harmful CO(2) elimination from the atmosphere along with the production of valuable nanocarbon materials. In the present study, a simple one-step metallothermic CO(2) reduction to nanocarbons was performed at 675 °C with the usage of a Mg reductant. The latter was employed alone and in its mixture with ferrocene, which was found to control the morphology of the produced nanocarbons. Scanning electron microscopy (SEM) analysis reveals a gradual increase in the amount of nanoparticles with different shapes and a decrease in tubular nanostructures with the increase of ferrocene content in the mixture. A possible mechanism for such morphological alterations is discussed. Transmission electron microscopy (TEM) analysis elucidates that the nanotubes and nanoparticles gain mainly amorphous structures, while sheet- and cloud-like morphologies also present in the materials possess significantly improved crystallinity. As a result, the overall crystallinity was preserved constant for all of the samples, which was confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques. Finally, electrochemical tests demonstrated that the prepared nanocarbons retained high specific capacitance values in the range of 200–310 F/g (at 0.1 V/s), which can be explained by the measured high specific surface area (650–810 m(2)/g), total pore volume (1.20–1.55 cm(3)/g), and the degree of crystallinity. The obtained results demonstrate the suitability of ferrocene for managing the nanocarbons’ morphology and open perspectives for the preparation of efficient “green” nanocarbon materials for energy storage applications and beyond. American Chemical Society 2023-07-31 /pmc/articles/PMC10433508/ /pubmed/37599958 http://dx.doi.org/10.1021/acsomega.3c03207 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Giannakopoulou, Tatiana Todorova, Nadia Plakantonaki, Niki Vagenas, Michail Sakellis, Elias Papargyriou, Despoina Katsiotis, Marios Trapalis, Christos CO(2)-Derived Nanocarbons with Controlled Morphology and High Specific Capacitance |
title | CO(2)-Derived
Nanocarbons with Controlled
Morphology and High Specific Capacitance |
title_full | CO(2)-Derived
Nanocarbons with Controlled
Morphology and High Specific Capacitance |
title_fullStr | CO(2)-Derived
Nanocarbons with Controlled
Morphology and High Specific Capacitance |
title_full_unstemmed | CO(2)-Derived
Nanocarbons with Controlled
Morphology and High Specific Capacitance |
title_short | CO(2)-Derived
Nanocarbons with Controlled
Morphology and High Specific Capacitance |
title_sort | co(2)-derived
nanocarbons with controlled
morphology and high specific capacitance |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10433508/ https://www.ncbi.nlm.nih.gov/pubmed/37599958 http://dx.doi.org/10.1021/acsomega.3c03207 |
work_keys_str_mv | AT giannakopouloutatiana co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT todorovanadia co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT plakantonakiniki co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT vagenasmichail co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT sakelliselias co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT papargyrioudespoina co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT katsiotismarios co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance AT trapalischristos co2derivednanocarbonswithcontrolledmorphologyandhighspecificcapacitance |