Abstract
Although monodisperse amorphous silica nanoparticles have been widely investigated, their formation mechanism is still a topic of debate. Here, we demonstrate the formation of monodisperse nanoparticles from colloidally stabilized primary particles, which at a critical concentration undergo a concerted association process, concomitant with a morphological and structural collapse. The formed assemblies grow further by addition of primary particles onto their surface. The presented mechanism, consistent with previously reported observations, reconciles the different theories proposed to date.
Original language | English |
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Pages (from-to) | 1433-1438 |
Number of pages | 6 |
Journal | Nano Letters |
Volume | 14 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2014 |
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Equipment
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Center for Multiscale Electron Microscopy (CMEM)
Heiner Friedrich (Manager), Rick Joosten (Operator), Demi de Moor (Operator), Pauline Schmit (Operator), Ingeborg Schreur - Piet (Operator), Anne Spoelstra (Operator) & Nina Romme - van Moll (Other)
Materials and Interface ChemistryFacility/equipment: Research lab