title: Synthesis of alcoholic ZnO nanocolloids in the presence of piperidine organic base: nucleation-growth evidence of Zn5(OH)8Ac2.2H2O fine particles and ZnO nanocrystals.
abstract: Piperidine as a new free OH* organic base has been successfully used to prepare Zn5(OH)8(Ac).22H2O particles (named Zn-HDS) or concentrated alcoholic ZnO sols. Considering the applications of Zn-HDS and ZnO compounds, as well as interests of these synthesis mechanisms for fundamental chemistry, such investigations are of importance. This strategy not only allows preparing Zn-HDS compounds at room temperature but also brings evidence of some new nucleation-growth, and permits the preparation of well crystalline ZnO nanocrystals at low temperature (maximum 60 degrees C). It was possible to convincingly prove that the formation of Zn-HDS phase is concomitant to the ZnO nanocrystals formation and that Zn-HDS could be considered as an intermediate initiator of ZnO nanocrystals. A parallel approach was used for the fast screening of the synthesis progress.
authors.affiliation: Université de Rennes 1, Science Chimiques de Rennes UMR UR1-CNRS 6226, Groupe Chimie du Solide et Matériaux, Campus de Beaulieu, CS74205, F-35042 Rennes cedex, France. grasset@univ-rennes1.fr
authors.forename: F
authors.initials: F
authors.lastname: Grasset
authors.forename: O
authors.initials: O
authors.lastname: Lavastre
authors.forename: C
authors.initials: C
authors.lastname: Baudet
authors.forename: T
authors.initials: T
authors.lastname: Sasaki
authors.forename: H
authors.initials: H
authors.lastname: Haneda