Ion Concentration Polarization for Microparticle Mesoporosity Differentiation.

Miguel Solsona, Vasileios A Papadimitriou, Wouter Olthuis, Albert van den Berg, Jan C T Eijkel

Abstract read

In one paragraph

Article in Langmuir : the ACS journal of surfaces and colloids, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Miguel SolsonaBIOS-Lab on a chip group, MESA+ Institute for Nanotechnology , Max Planck-University of Twente Center for Complex Fluid Dynamics University of Twente , Drienerlolaan 5 , Enschede , The Netherlands.ORCID http://orcid.org/0000-0003-2164-8511

Vasileios A PapadimitriouBIOS-Lab on a chip group, MESA+ Institute for Nanotechnology , Max Planck-University of Twente Center for Complex Fluid Dynamics University of Twente , Drienerlolaan 5 , Enschede , The Netherlands.

Wouter OlthuisBIOS-Lab on a chip group, MESA+ Institute for Nanotechnology , Max Planck-University of Twente Center for Complex Fluid Dynamics University of Twente , Drienerlolaan 5 , Enschede , The Netherlands.

Albert van den BergBIOS-Lab on a chip group, MESA+ Institute for Nanotechnology , Max Planck-University of Twente Center for Complex Fluid Dynamics University of Twente , Drienerlolaan 5 , Enschede , The Netherlands.

Jan C T EijkelBIOS-Lab on a chip group, MESA+ Institute for Nanotechnology , Max Planck-University of Twente Center for Complex Fluid Dynamics University of Twente , Drienerlolaan 5 , Enschede , The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Microparticle porosity is normally determined in bulk manner providing an ensemble average that hinders establishing the individual role of each microparticle. On the other hand, single particle characterization implies expensive technology. We propose to use ion concentration polarization to measure differences in mesoporosity at the single particle level. Ion concentration polarization occurs at the interface between an electrolyte and a porous particle when an electric field is applied. The extent of ion concentration polarization depends, among others, on the mesopore size and density. By using a fluorescence marker, we could measure differences in concentration polarization between particles with 3 and 13 nm average mesopore diameters. A qualitative model was developed in order to understand and interpret the phenomena. We believe that this inexpensive method could be used to measure differences in mesoporous particle materials such as catalysts.

Identifiers

PMID31310544

DOI10.1021/acs.langmuir.9b00802

PMCPMC6671885

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