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dc.contributor.authorDziadkowiec, Joanna
dc.contributor.authorLinga, Gaute
dc.contributor.authorKalchgruber, Lukas
dc.contributor.authorKavunga, Sunil
dc.contributor.authorCheng, Hsiu-Wei
dc.contributor.authorNilsen, Ola
dc.contributor.authorCampsteijn, Coen
dc.contributor.authorPokroy, Boaz
dc.contributor.authorValtiner, Markus
dc.date.accessioned2024-03-19T08:45:21Z
dc.date.available2024-03-19T08:45:21Z
dc.date.created2024-03-18T12:35:45Z
dc.date.issued2024
dc.identifier.issn1528-7483
dc.identifier.urihttps://hdl.handle.net/11250/3123007
dc.description.abstractCrystallization under confinement is commonplace in nature and offers new pathways to engineer crystals with the desired morphologies in a controlled and reproducible manner. In this work, we demonstrate the electrochemically assisted, in situ formation of hopper and tabular calcite crystals within a wedge-like pore formed by confinement induced by the surface force apparatus (SFA). In this geometry, the distance between the confining surfaces decreases continuously from hundreds of micrometers to a few nanometers in a single experimental setup. Calcium carbonate precipitation followed in real-time is triggered by elevating the pH and thus supersaturation directly inside the pore. The pH increase is tracked with a fluorophore tracer and calculated analytically. The unusual calcite crystal habits are obtained in the absence of precipitation-modifying additives and vary as a function of the distance between the confining walls, where at the largest surface separations, hopper crystals form on the gold surface, whereas flat, tabular calcite forms on mica when the confining distance was below 5 μm. Hexagonal or triangular calcite plates exhibit surfaces dominantly defined by rough (001) planes and increase in their surface area-to-volume ratios with decreasing SFA pore thickness. Stabilization of calcite plates bound by (001) faces is a cooperative effect of the oriented growth of calcite on the confining, negatively charged mica walls and the confinement shape, which promotes the development of calcite morphology in the rapid crystal growth directions. The heterogeneous crystallization of calcite is preceded by the nucleation and spreading of a front composed of submicrometer-sized calcium carbonate particles visualized in situ in the SFA pore. Our work demonstrates abundant crystal growth under nanoscale confinement facilitated by elevated pH and a high surface charge of the confining walls.en_US
dc.language.isoengen_US
dc.publisherACS Publicationsen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleElectrochemically Assisted Growth of Hopper and Tabular Calcite under Confinementen_US
dc.title.alternativeElectrochemically Assisted Growth of Hopper and Tabular Calcite under Confinementen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.journalCrystal Growth & Designen_US
dc.identifier.doi10.1021/acs.cgd.3c01433
dc.identifier.cristin2255370
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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