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

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:317

Article

Grasset, F.^1,2  Lavastre, O.³  Baudet, C.³  Sasaki, T.²  Haneda, H.⁴ 

[1] Univ Rennes 1, UMR Sci Chim Rennes 6226, CNRS, Grp Chim Solide & Mat, F-35042 Rennes, France

[2] Natl Inst Mat Sci, Int Ctr Young Sci, Tsukuba, Ibaraki 3050044, Japan

[3] Univ Rennes 1, UMR Sci Chim Rennes 6226, CNRS, Grp Catalyse & Organomet, F-35042 Rennes, France

[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

关键词: zinc oxide;    nanocolloids;    Zn-HDS;    nucleation;    growth;    piperidine;    parallel screening;   

DOI  :  10.1016/j.jcis.2007.09.078

来源: Elsevier

【 摘 要 】

Piperidine as a new free OH- organic base has been successfully used to prepare Zn-5(OH)(8)(Ac)(2)center dot 2H(2)O 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. (C) 2007 Elsevier Inc. All rights reserved.

【 授权许可】

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