Weakly Ordered Nanostructured Silver Disilicate and Its Colloidal Solutions: Preparation and Properties
- Authors: Baidakova M.V.1, Germanov N.A.2, Golyandin S.N.1,2, Kompan M.E.1, Mochalov S.V.2, Nashchekin A.V.1, Nevedomskii V.N.1,3, Pul’nev S.A.2, Rabchinskii M.K.1, Ulin V.P.1, Ulin N.V.1
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Affiliations:
- Ioffe Institute
- OOO Nanometall
- St. Petersburg Electrotechnical University
- Issue: Vol 64, No 6 (2019)
- Pages: 884-892
- Section: Physics of Nanostructures
- URL: https://journals.rcsi.science/1063-7842/article/view/203635
- DOI: https://doi.org/10.1134/S1063784219060033
- ID: 203635
Cite item
Abstract
It was shown that the interaction of silver cations in alkaline aqueous solutions with various kinds of silicates, regardless of their chemical and aggregation state, leads to the formation of an exclusively disilicate form of silver salt. We develop procedures for synthesis of nanostructured weakly ordered nonstoichiometric silver disilicate Ag6 –xHxSi2O7 capable of forming aqueous colloids. We study the micellular structure of colloidal particles in these solutions and demonstrate that permeability of silicic acid layers enveloping nanosized salt cores of these micelles depends on pH. Colloidal silver disilicate is found to exhibit a high catalytic activity in photoinduced oxidation of a broad spectrum of different compounds, which is demonstrated for compounds stable in aqueous solutions such as some organic dies and ferrocyanide complex ([Fe(CN\()_{6}^{{ - 4}}\)).
About the authors
M. V. Baidakova
Ioffe Institute
Author for correspondence.
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. A. Germanov
OOO Nanometall
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194100
S. N. Golyandin
Ioffe Institute; OOO Nanometall
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 194100
M. E. Kompan
Ioffe Institute
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
S. V. Mochalov
OOO Nanometall
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194100
A. V. Nashchekin
Ioffe Institute
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. N. Nevedomskii
Ioffe Institute; St. Petersburg Electrotechnical University
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 197101
S. A. Pul’nev
OOO Nanometall
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194100
M. K. Rabchinskii
Ioffe Institute
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. P. Ulin
Ioffe Institute
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. V. Ulin
Ioffe Institute
Email: baidakova@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021