title: Crystallization of hollow mesoporous silica nanoparticles.
abstract: Complex 3D macrostructured nanoparticles are transformed from amorphous silica into pure polycrystalline α-quartz using catalytic quantities of alkaline earth metals as devitrifying agent. Walls as thin as 10 nm could be crystallized without losing the architecture of the particles. The roles of cation size and the mol% of the incorporated devitrifying agent in crystallization behavior are studied, with Mg(2+), Ca(2+), Sr(2+) and Ba(2+) all producing pure α-quartz under certain conditions.
authors.affiliation: Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005, France. clement.sanchez@college-de-france.fr.
authors.forename: Glenna L
authors.initials: GL
authors.lastname: Drisko
authors.forename: Adrian
authors.initials: A
authors.lastname: Carretero-Genevrier
authors.forename: Alexandre
authors.initials: A
authors.lastname: Perrot
authors.forename: Martí
authors.initials: M
authors.lastname: Gich
authors.forename: Jaume
authors.initials: J
authors.lastname: Gàzquez
authors.forename: Juan
authors.initials: J
authors.lastname: Rodriguez-Carvajal
authors.forename: Luc
authors.initials: L
authors.lastname: Favre
authors.forename: David
authors.initials: D
authors.lastname: Grosso
authors.forename: Cédric
authors.initials: C
authors.lastname: Boissière
authors.forename: Clément
authors.initials: C
authors.lastname: Sanchez
mesh_terms: D003460:Crystallization; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D012822:Silicon Dioxide