DOI

Nanocompositemembranes have been actively developed in the last decade. The involvement of nanostructures can improve the permeability, selectivity, and anti-fouling properties of amembrane for improved filtration processes. In this work, we propose a novel type of ion-selective Glass/Au composite membrane based on porous glass (PG), which combines the advantages of porous media and promising selective properties. The latter are achieved by depositing gold nanoparticles into the membrane pores by the laser-induced liquid phase chemical deposition technique. Inside the pores, gold nanoparticles with an average diameter 25 nm were formed, which was confirmed by optical and microscopic studies. To study the transport and selective properties of the PG/Au composite membrane, the potentiometric method was applied. The uniform potential model was used to determine the surface charge from the experimental data. It was found that the formation of gold nanoparticles inside membrane pores leads to an increase in the surface charge from-2.75 mC/m2 to-5.42 mC/m2. The methods proposed in this work allow the creation of a whole family of composite materials based on porous glasses. In this case, conceptually, the synthesis of these materials will differ only in the selection of initial precursors.

Original languageEnglish
Article number1767
Number of pages16
JournalMaterials
Volume13
Issue number7
DOIs
StatePublished - 1 Apr 2020

    Research areas

  • Gold nanoparticles, Ion transport, Laser synthesis, Membrane, Modelling, Porous glass, membrane, NANOPOROUS MEMBRANES, gold nanoparticles, porous glass, SILVER, STATE, COPPER, ion transport, modelling, OF-THE-ART, LASER-INDUCED SYNTHESIS, POROUS GLASSES, NANOCOMPOSITES, DIELECTRIC-PROPERTIES, laser synthesis, WATER

    Scopus subject areas

  • Materials Science(all)

ID: 53598111