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Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers

The present paper focuses on the synthesis of a novel hydrogel support by combining polysaccharides (chitosan NPs and dialdehyde cellulose nanowhiskers) and graphene oxide nanosheets to obtain a biocompatible material for catalytic applications. The hydrogel was synthesized via green chemistry proce...

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Detalles Bibliográficos
Autores principales: Ashiri, Samira, Mehdipour, Ebrahim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086392/
https://www.ncbi.nlm.nih.gov/pubmed/35547694
http://dx.doi.org/10.1039/c8ra06623j
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author Ashiri, Samira
Mehdipour, Ebrahim
author_facet Ashiri, Samira
Mehdipour, Ebrahim
author_sort Ashiri, Samira
collection PubMed
description The present paper focuses on the synthesis of a novel hydrogel support by combining polysaccharides (chitosan NPs and dialdehyde cellulose nanowhiskers) and graphene oxide nanosheets to obtain a biocompatible material for catalytic applications. The hydrogel was synthesized via green chemistry processes and used as a support to prepare Pd nanoparticles. Finally, the hydrogel@Pd NPs was employed as the catalyst in the Mizoroki–Heck reaction to generate new C–C bonds. SEM analysis indicated that the hydrogel has macroporous morphology, which is in good correlation with its high crosslinking degree. The as-synthesized nanocomposite hydrogel exhibits beneficial properties such as ease of separation and excellent recyclability for at least six cycles without considerable loss in its activity. The yields of the products range from 81% to 98%. Additionally, this study provides the possibility to perform the Mizoroki–Heck reaction with aryl chloride in the presence of the as-prepared catalyst.
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spelling pubmed-90863922022-05-10 Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers Ashiri, Samira Mehdipour, Ebrahim RSC Adv Chemistry The present paper focuses on the synthesis of a novel hydrogel support by combining polysaccharides (chitosan NPs and dialdehyde cellulose nanowhiskers) and graphene oxide nanosheets to obtain a biocompatible material for catalytic applications. The hydrogel was synthesized via green chemistry processes and used as a support to prepare Pd nanoparticles. Finally, the hydrogel@Pd NPs was employed as the catalyst in the Mizoroki–Heck reaction to generate new C–C bonds. SEM analysis indicated that the hydrogel has macroporous morphology, which is in good correlation with its high crosslinking degree. The as-synthesized nanocomposite hydrogel exhibits beneficial properties such as ease of separation and excellent recyclability for at least six cycles without considerable loss in its activity. The yields of the products range from 81% to 98%. Additionally, this study provides the possibility to perform the Mizoroki–Heck reaction with aryl chloride in the presence of the as-prepared catalyst. The Royal Society of Chemistry 2018-09-24 /pmc/articles/PMC9086392/ /pubmed/35547694 http://dx.doi.org/10.1039/c8ra06623j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Ashiri, Samira
Mehdipour, Ebrahim
Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers
title Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers
title_full Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers
title_fullStr Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers
title_full_unstemmed Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers
title_short Preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan NPs and cellulose nanowhiskers
title_sort preparation of a novel palladium catalytic hydrogel based on graphene oxide/chitosan nps and cellulose nanowhiskers
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086392/
https://www.ncbi.nlm.nih.gov/pubmed/35547694
http://dx.doi.org/10.1039/c8ra06623j
work_keys_str_mv AT ashirisamira preparationofanovelpalladiumcatalytichydrogelbasedongrapheneoxidechitosannpsandcellulosenanowhiskers
AT mehdipourebrahim preparationofanovelpalladiumcatalytichydrogelbasedongrapheneoxidechitosannpsandcellulosenanowhiskers