The mechanism of stabilization of silver nanoparticles by chitosan in carbonic acid solutions

Ilya V. Novikov; Marina A. Pigaleva; Eduard E. Levin; Sergei S. Abramchuk; Alexander V. Naumkin; Helin Li; Andrij Pich; Marat O. Gallyamov

doi:10.1007/s00396-020-04683-8

The mechanism of stabilization of silver nanoparticles by chitosan in carbonic acid solutions

Ilya V. Novikov, Marina A. Pigaleva^*, Eduard E. Levin, Sergei S. Abramchuk, Alexander V. Naumkin, Helin Li, Andrij Pich, Marat O. Gallyamov

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The aim of the current study was to investigate the growth mechanisms of the silver nanoparticles (Ag NPs) in chitosan macrogels and microgels acting both as reductants and stabilizing agents in self-neutralizing, biocompatible, and environmentally benign carbonic acid solutions. The chitosan-hydroquinone microgels loaded with Ag NPs incorporated in carbonic acid solutions were successfully prepared. However, it was found that during the reduction of nanoparticles by hydrogen, the microgels tend to deteriorate. Yet, it was found that the duration of the process of silver reduction by chitosan in the composite macrogels obtained in a solution of carbonic acid took no more than 1 month. The process of the reduction was accompanied by the appearance of relatively small aggregates of Ag NPs uniformly distributed in the volume of the hydrogel. Such a "gentle" reduction of Ag NPs allows to avoid the loss of mechanical stability of the gel.

Original language	English
Pages (from-to)	1135-1148
Number of pages	14
Journal	Colloid and Polymer Science
Volume	298
Issue number	9
DOIs	https://doi.org/10.1007/s00396-020-04683-8
Publication status	Published - Sept 2020

Keywords

AG
Ag nanoparticles
CO2
Carbonic acid
Chitosan
High-pressure CO2
Hydrogel
Polymer
REDUCTION
Reduction of Ag nanoparticles
Stabilization of metal nanoparticles
metal composite

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10.1007/s00396-020-04683-8

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@article{9a82168cabbd4383be82249387eeae5c,

title = "The mechanism of stabilization of silver nanoparticles by chitosan in carbonic acid solutions",

abstract = "The aim of the current study was to investigate the growth mechanisms of the silver nanoparticles (Ag NPs) in chitosan macrogels and microgels acting both as reductants and stabilizing agents in self-neutralizing, biocompatible, and environmentally benign carbonic acid solutions. The chitosan-hydroquinone microgels loaded with Ag NPs incorporated in carbonic acid solutions were successfully prepared. However, it was found that during the reduction of nanoparticles by hydrogen, the microgels tend to deteriorate. Yet, it was found that the duration of the process of silver reduction by chitosan in the composite macrogels obtained in a solution of carbonic acid took no more than 1 month. The process of the reduction was accompanied by the appearance of relatively small aggregates of Ag NPs uniformly distributed in the volume of the hydrogel. Such a {"}gentle{"} reduction of Ag NPs allows to avoid the loss of mechanical stability of the gel.",

keywords = "AG, Ag nanoparticles, CO2, Carbonic acid, Chitosan, High-pressure CO2, Hydrogel, Polymer, REDUCTION, Reduction of Ag nanoparticles, Stabilization of metal nanoparticles, metal composite",

author = "Novikov, {Ilya V.} and Pigaleva, {Marina A.} and Levin, {Eduard E.} and Abramchuk, {Sergei S.} and Naumkin, {Alexander V.} and Helin Li and Andrij Pich and Gallyamov, {Marat O.}",

note = "Funding Information: This work was supported by Russian Foundation for Basic Research (grant no 19-03-00348-a). Publisher Copyright: {\textcopyright} 2020, Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2020",

month = sep,

doi = "10.1007/s00396-020-04683-8",

language = "English",

volume = "298",

pages = "1135--1148",

journal = "Colloid and Polymer Science",

issn = "0303-402X",

publisher = "Springer Verlag",

number = "9",

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TY - JOUR

T1 - The mechanism of stabilization of silver nanoparticles by chitosan in carbonic acid solutions

AU - Novikov, Ilya V.

AU - Pigaleva, Marina A.

AU - Levin, Eduard E.

AU - Abramchuk, Sergei S.

AU - Naumkin, Alexander V.

AU - Li, Helin

AU - Pich, Andrij

AU - Gallyamov, Marat O.

PY - 2020/9

Y1 - 2020/9

N2 - The aim of the current study was to investigate the growth mechanisms of the silver nanoparticles (Ag NPs) in chitosan macrogels and microgels acting both as reductants and stabilizing agents in self-neutralizing, biocompatible, and environmentally benign carbonic acid solutions. The chitosan-hydroquinone microgels loaded with Ag NPs incorporated in carbonic acid solutions were successfully prepared. However, it was found that during the reduction of nanoparticles by hydrogen, the microgels tend to deteriorate. Yet, it was found that the duration of the process of silver reduction by chitosan in the composite macrogels obtained in a solution of carbonic acid took no more than 1 month. The process of the reduction was accompanied by the appearance of relatively small aggregates of Ag NPs uniformly distributed in the volume of the hydrogel. Such a "gentle" reduction of Ag NPs allows to avoid the loss of mechanical stability of the gel.

AB - The aim of the current study was to investigate the growth mechanisms of the silver nanoparticles (Ag NPs) in chitosan macrogels and microgels acting both as reductants and stabilizing agents in self-neutralizing, biocompatible, and environmentally benign carbonic acid solutions. The chitosan-hydroquinone microgels loaded with Ag NPs incorporated in carbonic acid solutions were successfully prepared. However, it was found that during the reduction of nanoparticles by hydrogen, the microgels tend to deteriorate. Yet, it was found that the duration of the process of silver reduction by chitosan in the composite macrogels obtained in a solution of carbonic acid took no more than 1 month. The process of the reduction was accompanied by the appearance of relatively small aggregates of Ag NPs uniformly distributed in the volume of the hydrogel. Such a "gentle" reduction of Ag NPs allows to avoid the loss of mechanical stability of the gel.

KW - AG

KW - Ag nanoparticles

KW - CO2

KW - Carbonic acid

KW - Chitosan

KW - High-pressure CO2

KW - Hydrogel

KW - Polymer

KW - REDUCTION

KW - Reduction of Ag nanoparticles

KW - Stabilization of metal nanoparticles

KW - metal composite

U2 - 10.1007/s00396-020-04683-8

DO - 10.1007/s00396-020-04683-8

M3 - Article

SN - 0303-402X

VL - 298

SP - 1135

EP - 1148

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

IS - 9

ER -