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Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds

Chitosan plays a crucial role in catalysis, environmental remediation, and sustainable chemistry as a renewable and cationic polysaccharide. Chitosan-based metal catalysts are used in a broad range of chemical transformations. In the study, carbon quantum dots (CQDs) were derived from Momordica char...

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Autores principales: SALİM, Farah Samir, SARGIN, İdris, ARSLAN, Gülşin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Scientific and Technological Research Council of Turkey (TUBITAK) 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10504001/
https://www.ncbi.nlm.nih.gov/pubmed/37720867
http://dx.doi.org/10.55730/1300-0527.3525
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author SALİM, Farah Samir
SARGIN, İdris
ARSLAN, Gülşin
author_facet SALİM, Farah Samir
SARGIN, İdris
ARSLAN, Gülşin
author_sort SALİM, Farah Samir
collection PubMed
description Chitosan plays a crucial role in catalysis, environmental remediation, and sustainable chemistry as a renewable and cationic polysaccharide. Chitosan-based metal catalysts are used in a broad range of chemical transformations. In the study, carbon quantum dots (CQDs) were derived from Momordica charantia fruits by microwave irradiation following a green chemistry approach. Three catalysts were designed: Ag(0)-chitosan, Ag(0)-chitosan-M. charantia fruit powder, and Ag(0)-chitosan-CQDs. The catalyst supports were prepared by stabilizing CQDs or M. charantia powder within the polymeric matrix of chitosan beads. Metallic silver particles were anchored onto glutaraldehyde cross-linked chitosan beads from the aqueous solution of silver nitrate. The heterogeneous silver catalysts were used to reduce toxic nitroaromatics (4-nitrophenol, 2-nitroaniline, 1,2-diamino-4-nitrobenzene, 2,4-dinitrophenol). The regeneration of catalysts was also covered. The reused catalysts retained their catalytic activities after ten cycles. The study suggested that presence of CQDs or M. charantia powder could improve the efficiency of the chitosan-based metallic silver catalysts.
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spelling pubmed-105040012023-09-16 Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds SALİM, Farah Samir SARGIN, İdris ARSLAN, Gülşin Turk J Chem Research Article Chitosan plays a crucial role in catalysis, environmental remediation, and sustainable chemistry as a renewable and cationic polysaccharide. Chitosan-based metal catalysts are used in a broad range of chemical transformations. In the study, carbon quantum dots (CQDs) were derived from Momordica charantia fruits by microwave irradiation following a green chemistry approach. Three catalysts were designed: Ag(0)-chitosan, Ag(0)-chitosan-M. charantia fruit powder, and Ag(0)-chitosan-CQDs. The catalyst supports were prepared by stabilizing CQDs or M. charantia powder within the polymeric matrix of chitosan beads. Metallic silver particles were anchored onto glutaraldehyde cross-linked chitosan beads from the aqueous solution of silver nitrate. The heterogeneous silver catalysts were used to reduce toxic nitroaromatics (4-nitrophenol, 2-nitroaniline, 1,2-diamino-4-nitrobenzene, 2,4-dinitrophenol). The regeneration of catalysts was also covered. The reused catalysts retained their catalytic activities after ten cycles. The study suggested that presence of CQDs or M. charantia powder could improve the efficiency of the chitosan-based metallic silver catalysts. Scientific and Technological Research Council of Turkey (TUBITAK) 2022-11-18 /pmc/articles/PMC10504001/ /pubmed/37720867 http://dx.doi.org/10.55730/1300-0527.3525 Text en © TÜBİTAK https://creativecommons.org/licenses/by/4.0/This work is licensed under a Creative Commons Attribution 4.0 International License.
spellingShingle Research Article
SALİM, Farah Samir
SARGIN, İdris
ARSLAN, Gülşin
Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
title Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
title_full Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
title_fullStr Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
title_full_unstemmed Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
title_short Carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
title_sort carbon quantum dots and chitosan-based heterogeneous silver catalyst for reduction of nitroaromatic compounds
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10504001/
https://www.ncbi.nlm.nih.gov/pubmed/37720867
http://dx.doi.org/10.55730/1300-0527.3525
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