Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10430
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dc.contributor.authorYakın, Fetiye Esin-
dc.contributor.authorBarışık, Murat-
dc.contributor.authorŞen, Tümcan-
dc.date.accessioned2021-01-24T18:43:09Z-
dc.date.available2021-01-24T18:43:09Z-
dc.date.issued2020-
dc.identifier.issn1932-7447-
dc.identifier.issn1932-7455-
dc.identifier.urihttps://doi.org/10.1021/acs.jpcc.0c04602-
dc.identifier.urihttps://hdl.handle.net/10430-
dc.description.abstractMesoporous silica nanoparticles (MSNPs) are synthesized in the various forms of porous structures according to an application's needs, while their zeta potentials play a major role in their function. We show that variation in pore size and/or porosity yields a substantial decrease in MSNP zeta potential up to 25% lower than the theoretical zeta potential predictions for a flat surface at the corresponding ionic conditions in moderate pH range. By considering surface chemistry as a function of local ionic conditions (charge regulation), we calculated local zeta potentials around the MSNP which showed variation between pore openings and solid surfaces. Through a systematic study, we evaluated an average three-dimensional zeta potential for MSNPs with various conditions, based on the ratio of the area covered by pore openings to the rest of the MSNP surface area as a function of three-dimensional porosity and pore size. Results show that the high overlap of ionic layers inside the pores creates electric potentials close to zeta potential of the remaining surface, but large pore size and/or high ionic salt concentration yields divergence. We characterized the variation of MSNP zeta potential in terms of porosity (epsilon(3D)), pore size (D-pore), and ionic condition quantified by Debye length (lambda) and obtained unified behavior as a function of the nondimensional group of epsilon(3D)(D-pore/lambda). For epsilon(3D)(D-pore/lambda) < 0.01, MSNP zeta potential remains similar to flat plate predictions, but it decreases by increasing epsilon(3D)(D-pore/lambda) value. The influence of pore entrances on surface zeta potential increases nonlinearly by the increase of porosity and/or decrease of EDL overlap, similar to a change of area to volume ratio. The current findings are important for the understanding and further control of mesoporous particle transport in various promising and groundbreaking applications such as targeted drug delivery.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [118M710]; BAGEP Award of the Science Academyen_US
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant Number 118M710. Authors would like to thank Center for Scientific Computation at Southern Methodist University. This work was also supported by the BAGEP Award of the Science Academy.en_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.ispartofJournal of Physical Chemistry Cen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titlePore Size and Porosity Dependent Zeta Potentials of Mesoporous Silica Nanoparticlesen_US
dc.typeArticleen_US
dc.institutionauthorYakın, Fetiye Esin-
dc.institutionauthorBarışık, Murat-
dc.institutionauthorŞen, Tümcan-
dc.departmentİzmir Institute of Technology. Bioengineeringen_US
dc.departmentİzmir Institute of Technology. Mechanical Engineeringen_US
dc.identifier.volume124en_US
dc.identifier.issue36en_US
dc.identifier.startpage19579en_US
dc.identifier.endpage19587en_US
dc.identifier.wosWOS:000571497000020en_US
dc.identifier.scopus2-s2.0-85094977714en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1021/acs.jpcc.0c04602-
dc.relation.doi10.1021/acs.jpcc.0c04602en_US
dc.coverage.doi10.1021/acs.jpcc.0c04602en_US
dc.identifier.wosqualityQ2-
dc.identifier.scopusqualityQ1-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.openairetypeArticle-
crisitem.author.dept03.10. Department of Mechanical Engineering-
crisitem.author.dept01. Izmir Institute of Technology-
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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