Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles
Methods for creating various 3D morphologies of composites based on chitosan and copper nanoparticles stabilized by it in carbonic acid solutions formed under high pressure of saturating CO2 were developed. This work includes a comprehensive analysis of the regularities of copper nanoparticles stabi...
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ftmdpi:oai:mdpi.com:/1420-3049/27/21/7261/ 2023-08-20T04:05:53+02:00 Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles Katerina S. Stamer Marina A. Pigaleva Anastasiya A. Pestrikova Alexander Y. Nikolaev Alexander V. Naumkin Sergei S. Abramchuk Vera S. Sadykova Anastasia E. Kuvarina Valeriya N. Talanova Marat O. Gallyamov agris 2022-10-26 application/pdf https://doi.org/10.3390/molecules27217261 EN eng Multidisciplinary Digital Publishing Institute Organic Chemistry https://dx.doi.org/10.3390/molecules27217261 https://creativecommons.org/licenses/by/4.0/ Molecules; Volume 27; Issue 21; Pages: 7261 porous hydrogels capsules reusable catalysts nitrobenzene reduction antimicrobial activity Text 2022 ftmdpi https://doi.org/10.3390/molecules27217261 2023-08-01T07:02:45Z Methods for creating various 3D morphologies of composites based on chitosan and copper nanoparticles stabilized by it in carbonic acid solutions formed under high pressure of saturating CO2 were developed. This work includes a comprehensive analysis of the regularities of copper nanoparticles stabilization and reduction with chitosan, studied by IR and UV-vis spectroscopies, XPS, TEM and rheology. Chitosan can partially reduce Cu2+ ions in aqueous solutions to small-sized, spherical copper nanoparticles with a low degree of polydispersity; the process is accompanied by the formation of an elastic polymer hydrogel. The resulting composites demonstrate antimicrobial activity against both fungi and bacteria. Exposing the hydrogels to the mixture of He or H2 gases and CO2 fluid under high pressure makes it possible to increase the porosity of hydrogels significantly, as well as decrease their pore size. Composite capsules show sufficient resistance to various conditions and reusable catalytic activity in the reduction of nitrobenzene to aniline reaction. The relative simplicity of the proposed method and at the same time its profound advantages (such as environmental friendliness, extra purity) indicate an interesting role of this study for various applications of materials based on chitosan and metals. Text Carbonic acid MDPI Open Access Publishing Molecules 27 21 7261 |
institution |
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MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
porous hydrogels capsules reusable catalysts nitrobenzene reduction antimicrobial activity |
spellingShingle |
porous hydrogels capsules reusable catalysts nitrobenzene reduction antimicrobial activity Katerina S. Stamer Marina A. Pigaleva Anastasiya A. Pestrikova Alexander Y. Nikolaev Alexander V. Naumkin Sergei S. Abramchuk Vera S. Sadykova Anastasia E. Kuvarina Valeriya N. Talanova Marat O. Gallyamov Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles |
topic_facet |
porous hydrogels capsules reusable catalysts nitrobenzene reduction antimicrobial activity |
description |
Methods for creating various 3D morphologies of composites based on chitosan and copper nanoparticles stabilized by it in carbonic acid solutions formed under high pressure of saturating CO2 were developed. This work includes a comprehensive analysis of the regularities of copper nanoparticles stabilization and reduction with chitosan, studied by IR and UV-vis spectroscopies, XPS, TEM and rheology. Chitosan can partially reduce Cu2+ ions in aqueous solutions to small-sized, spherical copper nanoparticles with a low degree of polydispersity; the process is accompanied by the formation of an elastic polymer hydrogel. The resulting composites demonstrate antimicrobial activity against both fungi and bacteria. Exposing the hydrogels to the mixture of He or H2 gases and CO2 fluid under high pressure makes it possible to increase the porosity of hydrogels significantly, as well as decrease their pore size. Composite capsules show sufficient resistance to various conditions and reusable catalytic activity in the reduction of nitrobenzene to aniline reaction. The relative simplicity of the proposed method and at the same time its profound advantages (such as environmental friendliness, extra purity) indicate an interesting role of this study for various applications of materials based on chitosan and metals. |
format |
Text |
author |
Katerina S. Stamer Marina A. Pigaleva Anastasiya A. Pestrikova Alexander Y. Nikolaev Alexander V. Naumkin Sergei S. Abramchuk Vera S. Sadykova Anastasia E. Kuvarina Valeriya N. Talanova Marat O. Gallyamov |
author_facet |
Katerina S. Stamer Marina A. Pigaleva Anastasiya A. Pestrikova Alexander Y. Nikolaev Alexander V. Naumkin Sergei S. Abramchuk Vera S. Sadykova Anastasia E. Kuvarina Valeriya N. Talanova Marat O. Gallyamov |
author_sort |
Katerina S. Stamer |
title |
Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles |
title_short |
Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles |
title_full |
Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles |
title_fullStr |
Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles |
title_full_unstemmed |
Water Saturated with Pressurized CO2 as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles |
title_sort |
water saturated with pressurized co2 as a tool to create various 3d morphologies of composites based on chitosan and copper nanoparticles |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/molecules27217261 |
op_coverage |
agris |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Molecules; Volume 27; Issue 21; Pages: 7261 |
op_relation |
Organic Chemistry https://dx.doi.org/10.3390/molecules27217261 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/molecules27217261 |
container_title |
Molecules |
container_volume |
27 |
container_issue |
21 |
container_start_page |
7261 |
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1774716630824124416 |