title: Mesoporous alumina from colloidal biotemplating of Al clusters.
abstract: A simple and green synthesis route was disclosed for the achievement of mesoporous alumina microparticles employing polysaccharide nanoparticles (α-chitin nanorods) as templates. Pore textures can be tuned by the cationic alumina precursor. Compared to small cations, the use of Al13 and Al30 oxo-hydroxo clusters leads to better defined and elongated mesopores. Electron microscopy and spectroscopic ((13) C, (27) Al NMR, XPS) measurements demonstrated that this is related to the effective coating of α-chitin nanorods by these pre-condensed colloids.
authors.affiliation: Institut Charles Gerhardt Montpellier, UMR 5253 CNRS/UM2/ENSCM/UM1, ENSCM, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5 (France).
authors.forename: Alexander
authors.initials: A
authors.lastname: Sachse
authors.forename: Laura
authors.initials: L
authors.lastname: Cardoso
authors.forename: Krassimir L
authors.initials: KL
authors.lastname: Kostov
authors.forename: Corine
authors.initials: C
authors.lastname: Gérardin
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Belamie
authors.forename: Bruno
authors.initials: B
authors.lastname: Alonso
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D002686:Chitin / Q000737:chemistry*; D003102:Colloids; D009682:Magnetic Resonance Spectroscopy; D053758:Nanoparticles / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry*
chemical_list: D002412:Cations; D003102:Colloids; D011134:Polysaccharides; D002686:Chitin; D000537:Aluminum Oxide
keywords: mesoporous materials; polysaccharides; self-assembly; spray-drying