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Experimental and theoretical study of the mechanism formation of silver nanoclusters in the reduction reaction of Ag+ ions by alizarin solution
Bohdan Khmelnitsky Natl Univ, Dept Chem, Shevchenka Bvd 81, UA-18031 Cherkassy, Ukraine..
Bohdan Khmelnitsky Natl Univ, Dept Chem, Shevchenka Bvd 81, UA-18031 Cherkassy, Ukraine..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Theoretical Chemistry and Biology. Bohdan Khmelnitsky Natl Univ, Dept Chem, Shevchenka Bvd 81, UA-18031 Cherkassy, Ukraine..ORCID iD: 0000-0002-0716-3385
2019 (English)In: Colloid and Interface Science Communications, ISSN 2215-0382, Vol. 29, p. 47-54Article in journal (Refereed) Published
Abstract [en]

For the study of the processes of the Ag+ ions interaction with humic substances a low molecular weight model compound - alizarin - was used for the first time in the present work. It has been established that alizarin carries out a double role in the process of synthesis of silver nanoparticles: reducing agent of Ag+ ions and a stabilizer of the formed nanoparticles. Based on the analysis of experimental data a mechanism of silver nanoparticles formation was proposed. In particular, at the moment of mixing of the reagents, a microphase Ag2O is formed and becomes a source of silver ions in solution. Alizarin molecules form a complex with silver ions, which provide the centres of primary clusters formation. The growth of primary clusters occurs through the reduction of Ag+ ions from the solution. Organic component of the complex undergoes oxidative hydroxylation by the Elbs reaction type.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2019. Vol. 29, p. 47-54
Keywords [en]
Silver nanoparticles, Alizarin, Potentiometric study, Spectrophotometic study, Mechanism
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-247821DOI: 10.1016/j.colcom.2019.02.001ISI: 000460698800007Scopus ID: 2-s2.0-85062151394OAI: oai:DiVA.org:kth-247821DiVA, id: diva2:1299485
Note

QC 20190327

Available from: 2019-03-27 Created: 2019-03-27 Last updated: 2019-04-04Bibliographically approved

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