title: Aerosol-assisted self-assembly of hybrid Layered Double Hydroxide particles into spherical architectures.
abstract: Acetate intercalated NiAl-Layered Double Hydroxide nanoparticles were prepared by polyol process and further used as building blocks to form hybrid LDH spheres by a spray drying technique. The spherical aggregated LDH particles display a polydispersed size with a diameter ranging from 47 nm to 2 μm. The analysis of the thermal behavior evidenced that the spherical form was maintained upon calcination up to 1100°C, giving rise to derived mixed oxide (NiO+NiAl(2)O(4)) nanospheres. Interestingly, the spherical morphology of the LDH materials was also retained during anion exchange process. The replacement of the intercalated acetate anion by of a voluminous anion such as dodecylsulfate induces an increase of the nanosphere mean diameter of 65%. The different materials were deeply characterized using X-ray diffraction, FTIR spectroscopy, scanning and transmission electron microscopies, dynamic light scattering, thermal analysis and nitrogen sorption.
authors.affiliation: Clermont Université, Université Blaise Pascal, Laboratoire des Matériaux Inorganiques, Clermont-Ferrand, France. vanessa.prevot@univ-bpclermont.fr
authors.forename: Vanessa
authors.initials: V
authors.lastname: Prevot
authors.forename: Claire
authors.initials: C
authors.lastname: Szczepaniak
authors.forename: Maguy
authors.initials: M
authors.lastname: Jaber
mesh_terms: D000336:Aerosols / Q000737:chemistry*; D003890:Desiccation / Q000379:methods; D006358:Hot Temperature; D006878:Hydroxides / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*
chemical_list: D000336:Aerosols; D006878:Hydroxides