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Issue 25, 2011
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Evolution of zinc oxide nanostructures through kinetics control

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In-depth understanding of the kinetics of the vapor deposition process is substantial for advancing this capable bottom-up nanostructure synthesis approach into a versatile large-scale nanomanufacturing technology. In this paper, we report a systematic study of the vapor deposition kinetics of ZnO nanomaterials under controlled atmosphere and properly refined deposition conditions. The experiments clearly evidenced the self-catalyzed growth of ZnO NWs via the formation of ZnO nanoflowers. This result illustrated how ZnO morphologies were associated with the discrepancy between oxidation rate and condensation rate of Zn. The capability of switching the NW morphologies and possibly mechanisms was demonstrated by kinetically controlling the deposition system. The high Zn composition during the deposition resulted in strongly luminescent NWs, which can be used for optical imaging applications. This research discovered a fundamental kinetics that governs the mechanisms and morphology selection of nanostructures in a non-catalyst growth system.

Graphical abstract: Evolution of zinc oxide nanostructures through kinetics control

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The article was received on 02 Mar 2011, accepted on 07 Apr 2011 and first published on 14 May 2011

Article type: Paper
DOI: 10.1039/C1JM10918A
Citation: J. Mater. Chem., 2011,21, 9000-9008

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    Evolution of zinc oxide nanostructures through kinetics control

    J. Shi, H. Hong, Y. Ding, Y. Yang, F. Wang, W. Cai and X. Wang, J. Mater. Chem., 2011, 21, 9000
    DOI: 10.1039/C1JM10918A

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