GLASS/AU COMPOSITE MEMBRANES WITH GOLD NANOPARTICLES INSIDE PORES FOR SELECTIVE ION TRANSPORT

D.V. Lebedev, M. O. Novomlinsky, M.S. Panov, I.N. Anfimova, V.A. Kochemirovsky, I.I. Ryzhkov, T.V. Antropova

Research output: Chapter in Book/Report/Conference proceedingOther chapter contributionResearch

Abstract

Hybrid or composite membranes containing various nanoparticles have been actively studied during the last decade. It was previously shown that the presence of different inorganic particles in the membrane structure can significantly affect its ionic selectivity and transport properties. The current work is aimed at the synthesis of glass membranes with gold nanoparticles inside the pores and investigation of their selective properties. Porous glass (PG) samples in the form of plane-parallel polished plates 10 × 10 × 1.0 mm3 in size have been prepared in the ISCh RAS (project № 0097-2019-0015) by chemical etching of phase-separated sodium borosilicate glass with two-frame structure [1] in HCl and KOH solutions consistently as described in [1, 2]. The PG’s porosity and average pore diameter are 0.5 (cm3 /cm3 ) and 25 nm, respectively [2]. The method of laser-induced metal deposition from solution was used for the formation of a new type of Glass/Au composite membranes [3]. Porous glass was impregnated with HAuCl4 water solution. Then the sample was exposed by a pulsed laser with a wavelength of 355 nm. The potentiometric method was implemented for studying the selective properties of membranes. 2D Space Charge Model based on the Navier-Stokes, Nernst Planck and Poisson equations was utilized for interpreting the experimental results [4]. As part of the work, the selective properties of obtained membranes in model solutions of KCl salts were investigated. It was shown that the formation of particles inside membrane pores essentially affects its ion-selective properties. The results obtained can be widely used in various technologies. Specify what technologies, otherwise it the sentence looks very general. Acknowledgment: This work is supported by the Russian Science Foundation under grant № 19-79-00095. The authors also express their gratitude to the resource center of SPBU “Optical and Laser Materials Research” and “Interdisciplinary Resource Centre for Nanotechnology”.
Original languageEnglish
Title of host publicationMELPRO Conference 2020
Subtitle of host publicationBook of abstracts
Pages40
StatePublished - 8 Nov 2020
EventMembrane and
Electromembrane Processes Conference MELPRO 2020: Membrane and Electromembrane Processes Conference MELPRO 2020
- On Line, Прага, Czech Republic
Duration: 8 Nov 202011 Nov 2020
https://www.melpro.cz/

Conference

ConferenceMembrane and
Electromembrane Processes Conference MELPRO 2020
Abbreviated titleMELPRO 2020
CountryCzech Republic
CityПрага
Period8/11/2011/11/20
Internet address

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