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Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex

Graphitic carbon nitride (g-C(3)N(4)) was synthesized by heating urea at different temperatures (773–923 K) in air, and was examined as a photocatalyst for CO(2) reduction. With increasing synthesis temperature, the conversion of urea into g-C(3)N(4) was facilitated, as confirmed by X-ray diffractio...

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Autores principales: Maeda, Kazuhiko, An, Daehyeon, Kuriki, Ryo, Lu, Daling, Ishitani, Osamu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6071697/
https://www.ncbi.nlm.nih.gov/pubmed/30112084
http://dx.doi.org/10.3762/bjoc.14.153
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author Maeda, Kazuhiko
An, Daehyeon
Kuriki, Ryo
Lu, Daling
Ishitani, Osamu
author_facet Maeda, Kazuhiko
An, Daehyeon
Kuriki, Ryo
Lu, Daling
Ishitani, Osamu
author_sort Maeda, Kazuhiko
collection PubMed
description Graphitic carbon nitride (g-C(3)N(4)) was synthesized by heating urea at different temperatures (773–923 K) in air, and was examined as a photocatalyst for CO(2) reduction. With increasing synthesis temperature, the conversion of urea into g-C(3)N(4) was facilitated, as confirmed by X-ray diffraction, FTIR spectroscopy and elemental analysis. The as-synthesized g-C(3)N(4) samples, further modified with Ag nanoparticles, were capable of reducing CO(2) into formate under visible light (λ > 400 nm) in the presence of triethanolamine as an electron donor, with the aid of a molecular Ru(II) cocatalyst (RuP). The CO(2) reduction activity was improved by increasing the synthesis temperature of g-C(3)N(4), with the maximum activity obtained at 873–923 K. This trend was also consistent with that observed in photocatalytic H(2) evolution using Pt-loaded g-C(3)N(4). The photocatalytic activities of RuP/g-C(3)N(4) for CO(2) reduction and H(2) evolution were thus shown to be strongly associated with the generation of the crystallized g-C(3)N(4) phase.
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spelling pubmed-60716972018-08-15 Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex Maeda, Kazuhiko An, Daehyeon Kuriki, Ryo Lu, Daling Ishitani, Osamu Beilstein J Org Chem Full Research Paper Graphitic carbon nitride (g-C(3)N(4)) was synthesized by heating urea at different temperatures (773–923 K) in air, and was examined as a photocatalyst for CO(2) reduction. With increasing synthesis temperature, the conversion of urea into g-C(3)N(4) was facilitated, as confirmed by X-ray diffraction, FTIR spectroscopy and elemental analysis. The as-synthesized g-C(3)N(4) samples, further modified with Ag nanoparticles, were capable of reducing CO(2) into formate under visible light (λ > 400 nm) in the presence of triethanolamine as an electron donor, with the aid of a molecular Ru(II) cocatalyst (RuP). The CO(2) reduction activity was improved by increasing the synthesis temperature of g-C(3)N(4), with the maximum activity obtained at 873–923 K. This trend was also consistent with that observed in photocatalytic H(2) evolution using Pt-loaded g-C(3)N(4). The photocatalytic activities of RuP/g-C(3)N(4) for CO(2) reduction and H(2) evolution were thus shown to be strongly associated with the generation of the crystallized g-C(3)N(4) phase. Beilstein-Institut 2018-07-17 /pmc/articles/PMC6071697/ /pubmed/30112084 http://dx.doi.org/10.3762/bjoc.14.153 Text en Copyright © 2018, Maeda et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjoc/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Journal of Organic Chemistry terms and conditions: (https://www.beilstein-journals.org/bjoc/terms)
spellingShingle Full Research Paper
Maeda, Kazuhiko
An, Daehyeon
Kuriki, Ryo
Lu, Daling
Ishitani, Osamu
Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex
title Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex
title_full Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex
title_fullStr Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex
title_full_unstemmed Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex
title_short Graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(II) complex
title_sort graphitic carbon nitride prepared from urea as a photocatalyst for visible-light carbon dioxide reduction with the aid of a mononuclear ruthenium(ii) complex
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6071697/
https://www.ncbi.nlm.nih.gov/pubmed/30112084
http://dx.doi.org/10.3762/bjoc.14.153
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