Cargando…

Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups

In recent years, nanotechnology has become a considerable research interest in the area of preparation of nanocatalysts based on naturally occurring polysaccharides. Chitosan (CS), as a naturally occurring biodegradable and biocompatible polysaccharide, is successfully utilized as an ideal template...

Descripción completa

Detalles Bibliográficos
Autores principales: Bashal, Ali H., Riyadh, Sayed M., Alharbi, Walaa, Alharbi, Khadijah H., Farghaly, Thoraya A., Khalil, Khaled D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8840260/
https://www.ncbi.nlm.nih.gov/pubmed/35160376
http://dx.doi.org/10.3390/polym14030386
_version_ 1784650576370335744
author Bashal, Ali H.
Riyadh, Sayed M.
Alharbi, Walaa
Alharbi, Khadijah H.
Farghaly, Thoraya A.
Khalil, Khaled D.
author_facet Bashal, Ali H.
Riyadh, Sayed M.
Alharbi, Walaa
Alharbi, Khadijah H.
Farghaly, Thoraya A.
Khalil, Khaled D.
author_sort Bashal, Ali H.
collection PubMed
description In recent years, nanotechnology has become a considerable research interest in the area of preparation of nanocatalysts based on naturally occurring polysaccharides. Chitosan (CS), as a naturally occurring biodegradable and biocompatible polysaccharide, is successfully utilized as an ideal template for the immobilization of metal oxide nanoparticles. In this study, zinc oxide nanoparticles have been doped within a chitosan matrix at dissimilar weight percentages (5, 10, 15, 20, and 25 wt.% CS/ZnO) and have been fabricated by using a simple solution casting method. The prepared solutions of the nanocomposites were cast in a Petri-dish and were subsequently shaped as a thin film. After that, the structural features of the nanocomposite film have been studied by measuring the FTIR, SEM, and XRD analytical tools. FTIR spectra showed the presence of some changes in the major characteristic peaks of chitosan due to interaction with ZnO nanoparticles. In addition, SEM graphs exhibited dramatic morphology changes on the chitosan surface, which is attributed to the surface adsorption of ZnO molecules. Based on the results of the investigated organic catalytic reactions, the prepared CS/ZnO nanocomposite film (20 wt.%) could be a viable an effective, recyclable, and heterogeneous base catalyst in the synthesis of thiazoles. The results showed that the nanocomposite film is chemically stable and can be collected and reused in the investigated catalytic reactions more than three times without loss of its catalytic activity.
format Online
Article
Text
id pubmed-8840260
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-88402602022-02-13 Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups Bashal, Ali H. Riyadh, Sayed M. Alharbi, Walaa Alharbi, Khadijah H. Farghaly, Thoraya A. Khalil, Khaled D. Polymers (Basel) Article In recent years, nanotechnology has become a considerable research interest in the area of preparation of nanocatalysts based on naturally occurring polysaccharides. Chitosan (CS), as a naturally occurring biodegradable and biocompatible polysaccharide, is successfully utilized as an ideal template for the immobilization of metal oxide nanoparticles. In this study, zinc oxide nanoparticles have been doped within a chitosan matrix at dissimilar weight percentages (5, 10, 15, 20, and 25 wt.% CS/ZnO) and have been fabricated by using a simple solution casting method. The prepared solutions of the nanocomposites were cast in a Petri-dish and were subsequently shaped as a thin film. After that, the structural features of the nanocomposite film have been studied by measuring the FTIR, SEM, and XRD analytical tools. FTIR spectra showed the presence of some changes in the major characteristic peaks of chitosan due to interaction with ZnO nanoparticles. In addition, SEM graphs exhibited dramatic morphology changes on the chitosan surface, which is attributed to the surface adsorption of ZnO molecules. Based on the results of the investigated organic catalytic reactions, the prepared CS/ZnO nanocomposite film (20 wt.%) could be a viable an effective, recyclable, and heterogeneous base catalyst in the synthesis of thiazoles. The results showed that the nanocomposite film is chemically stable and can be collected and reused in the investigated catalytic reactions more than three times without loss of its catalytic activity. MDPI 2022-01-19 /pmc/articles/PMC8840260/ /pubmed/35160376 http://dx.doi.org/10.3390/polym14030386 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bashal, Ali H.
Riyadh, Sayed M.
Alharbi, Walaa
Alharbi, Khadijah H.
Farghaly, Thoraya A.
Khalil, Khaled D.
Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups
title Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups
title_full Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups
title_fullStr Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups
title_full_unstemmed Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups
title_short Bio-Based (Chitosan-ZnO) Nanocomposite: Synthesis, Characterization, and Its Use as Recyclable, Ecofriendly Biocatalyst for Synthesis of Thiazoles Tethered Azo Groups
title_sort bio-based (chitosan-zno) nanocomposite: synthesis, characterization, and its use as recyclable, ecofriendly biocatalyst for synthesis of thiazoles tethered azo groups
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8840260/
https://www.ncbi.nlm.nih.gov/pubmed/35160376
http://dx.doi.org/10.3390/polym14030386
work_keys_str_mv AT bashalalih biobasedchitosanznonanocompositesynthesischaracterizationanditsuseasrecyclableecofriendlybiocatalystforsynthesisofthiazolestetheredazogroups
AT riyadhsayedm biobasedchitosanznonanocompositesynthesischaracterizationanditsuseasrecyclableecofriendlybiocatalystforsynthesisofthiazolestetheredazogroups
AT alharbiwalaa biobasedchitosanznonanocompositesynthesischaracterizationanditsuseasrecyclableecofriendlybiocatalystforsynthesisofthiazolestetheredazogroups
AT alharbikhadijahh biobasedchitosanznonanocompositesynthesischaracterizationanditsuseasrecyclableecofriendlybiocatalystforsynthesisofthiazolestetheredazogroups
AT farghalythorayaa biobasedchitosanznonanocompositesynthesischaracterizationanditsuseasrecyclableecofriendlybiocatalystforsynthesisofthiazolestetheredazogroups
AT khalilkhaledd biobasedchitosanznonanocompositesynthesischaracterizationanditsuseasrecyclableecofriendlybiocatalystforsynthesisofthiazolestetheredazogroups