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Issue 9, 2011
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Formation of quasi-single crystalline porous ZnO nanostructures with a single large cavity

Seungho Cho,a  Semi Kim,b  Dae-Won Jungc  and  Kun-Hong Lee*a 
Author affiliations

* Corresponding authors

a Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), San 31, Hyoja-Dong, Nam-Gu, Pohang, Korea
E-mail: ce20047@postech.ac.kr

b Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), San 31, Hyoja-Dong, Nam-Gu, Pohang, Korea

c National Center for Nanomaterials Technology (NCNT), Pohang University of Science and Technology (POSTECH), San 31, Hyoja-Dong, Nam-Gu, Pohang, Korea

Abstract

We report a method for synthesizing quasi-single crystalline porous ZnO nanostructures containing a single large cavity. The microwave-assisted route consists of a short (about 2 min) temperature ramping stage (from room temperature to 120 °C) and a stage in which the temperature is maintained at 120 °C for 2 h. The structures produced by this route were 200–480 nm in diameter. The morphological yields of this method were very high. The temperature- and time-dependent evolution of the synthesized powders and the effects of an additive, vitamin C, were studied. Spherical amorphous/polycrystalline structures (70–170 nm in diameter), which appeared transitorily, may play a key role in the formation of the single crystalline porous hollow ZnO nanostructures. Studies and characterization of the nanostructures suggested a possible mechanism for formation of the quasi-single crystalline porous ZnO nanostructures with an interior space.

Graphical abstract: Formation of quasi-single crystalline porous ZnO nanostructures with a single large cavity

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Publication details

The article was received on 13 Jun 2011, accepted on 06 Jul 2011 and first published on 15 Aug 2011


Article type: Paper
DOI: 10.1039/C1NR10609K
Citation: Nanoscale, 2011,3, 3841-3848
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    Formation of quasi-single crystalline porous ZnO nanostructures with a single large cavity

    S. Cho, S. Kim, D. Jung and K. Lee, Nanoscale, 2011, 3, 3841
    DOI: 10.1039/C1NR10609K

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