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Precursor-Dependent Photocatalytic Activity of Carbon Dots
This work systematically compares both structural features and photocatalytic performance of a series of graphitic and amorphous carbon dots (CDs) prepared in a bottom-up manner from fructose, glucose, and citric acid. We demonstrate that the carbon source and synthetic procedures diversely affect t...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6983025/ https://www.ncbi.nlm.nih.gov/pubmed/31888094 http://dx.doi.org/10.3390/molecules25010101 |
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author | Emanuele, Amadio Cailotto, Simone Campalani, Carlotta Branzi, Lorenzo Raviola, Carlotta Ravelli, Davide Cattaruzza, Elti Trave, Enrico Benedetti, Alvise Selva, Maurizio Perosa, Alvise |
author_facet | Emanuele, Amadio Cailotto, Simone Campalani, Carlotta Branzi, Lorenzo Raviola, Carlotta Ravelli, Davide Cattaruzza, Elti Trave, Enrico Benedetti, Alvise Selva, Maurizio Perosa, Alvise |
author_sort | Emanuele, Amadio |
collection | PubMed |
description | This work systematically compares both structural features and photocatalytic performance of a series of graphitic and amorphous carbon dots (CDs) prepared in a bottom-up manner from fructose, glucose, and citric acid. We demonstrate that the carbon source and synthetic procedures diversely affect the structural and optical properties of the CDs, which in turn unpredictably influence their photo electron transfer ability. The latter was evaluated by studying the photo-reduction of methyl viologen. Overall, citric acid-CDs were found to provide the best photocatalytic performance followed by fructose- and glucose-CDs. However, while the graphitization of glucose- and citric acid-CDs favored the photo-reaction, a reverse structure–activity dependence was observed for fructose-CDs due to the formation of a large graphitic-like supramolecular assembly. This study highlights the complexity to design in advance photo-active bio-based carbon nanomaterials. |
format | Online Article Text |
id | pubmed-6983025 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69830252020-02-06 Precursor-Dependent Photocatalytic Activity of Carbon Dots Emanuele, Amadio Cailotto, Simone Campalani, Carlotta Branzi, Lorenzo Raviola, Carlotta Ravelli, Davide Cattaruzza, Elti Trave, Enrico Benedetti, Alvise Selva, Maurizio Perosa, Alvise Molecules Communication This work systematically compares both structural features and photocatalytic performance of a series of graphitic and amorphous carbon dots (CDs) prepared in a bottom-up manner from fructose, glucose, and citric acid. We demonstrate that the carbon source and synthetic procedures diversely affect the structural and optical properties of the CDs, which in turn unpredictably influence their photo electron transfer ability. The latter was evaluated by studying the photo-reduction of methyl viologen. Overall, citric acid-CDs were found to provide the best photocatalytic performance followed by fructose- and glucose-CDs. However, while the graphitization of glucose- and citric acid-CDs favored the photo-reaction, a reverse structure–activity dependence was observed for fructose-CDs due to the formation of a large graphitic-like supramolecular assembly. This study highlights the complexity to design in advance photo-active bio-based carbon nanomaterials. MDPI 2019-12-26 /pmc/articles/PMC6983025/ /pubmed/31888094 http://dx.doi.org/10.3390/molecules25010101 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Communication Emanuele, Amadio Cailotto, Simone Campalani, Carlotta Branzi, Lorenzo Raviola, Carlotta Ravelli, Davide Cattaruzza, Elti Trave, Enrico Benedetti, Alvise Selva, Maurizio Perosa, Alvise Precursor-Dependent Photocatalytic Activity of Carbon Dots |
title | Precursor-Dependent Photocatalytic Activity of Carbon Dots |
title_full | Precursor-Dependent Photocatalytic Activity of Carbon Dots |
title_fullStr | Precursor-Dependent Photocatalytic Activity of Carbon Dots |
title_full_unstemmed | Precursor-Dependent Photocatalytic Activity of Carbon Dots |
title_short | Precursor-Dependent Photocatalytic Activity of Carbon Dots |
title_sort | precursor-dependent photocatalytic activity of carbon dots |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6983025/ https://www.ncbi.nlm.nih.gov/pubmed/31888094 http://dx.doi.org/10.3390/molecules25010101 |
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