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Electroanalysis based on stand-alone matrices and electrode-modifying films with silica sol-gel frameworks: a review

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dc.abstract.enSilica sol-gel matrices and its organically modified analogues that contain aqueous electrolytes, ionic liquids, or other ionic conductors constitute stand-alone solid-state electrochemical cells when hosting electrodes or serve as modifying films on working electrodes in conventional cells. These materials facilitate a wide variety of analytical applications and are employed in various designs of power sources. In this review, analytical applications are the focus. Solid-state cells that serve as gas sensors, including in chromatographic detectors of gas-phase analytes, are described. Sol-gel films that modify working electrodes to perform functions such as hosting electrochemical atalysts and acting as size-exclusion moieties that protect the electrode from passivation by adsorption of acromolecules are discussed with emphasis on pore size, structure, and orientation. Silica sol-gel chemistry has been studied extensively; thus, factors that control its general properties as frameworks for solid-state cells and for thin films on the working electrode are well characterized. Here, recent advances such as the use of dendrimers and of nanoscale beads in conjunction with electrochemically assisted deposition of silica to template pore size and distribution are emphasized. Related topics include replacing aqueous solutions as the internal electrolyte with room-temperature ionic liquids, using the solgel as an anchor for functional groups and modifying electrodes with silica-based composites.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorMiecznikowski, Krzysztof
dc.contributor.authorCox, James A.
dc.date.accessioned2024-01-24T22:33:00Z
dc.date.available2024-01-24T22:33:00Z
dc.date.copyright2020-08-01
dc.date.issued2020
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number11-12
dc.description.versionFINAL_PUBLISHED
dc.description.volume24
dc.identifier.doi10.1007/S10008-020-04697-W
dc.identifier.issn1432-8488
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/105962
dc.identifier.weblinkhttp://link.springer.com/content/pdf/10.1007/s10008-020-04697-w.pdf
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of Solid State Electrochemistry
dc.relation.pages2617-2631
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enAmperometric gas sensors
dc.subject.enSolid electrolytes
dc.subject.enNanowells
dc.subject.enThree-phase boundary
dc.subject.enSilica
dc.subject.enTemplated pores
dc.titleElectroanalysis based on stand-alone matrices and electrode-modifying films with silica sol-gel frameworks: a review
dc.typeJournalArticle
dspace.entity.typePublication