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Issue 10, 2003
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Wet chemical synthesis of ultralong and straight single-crystalline ZnO nanowires and their excellent UV emission properties

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Abstract

Ultralong and straight single-crystalline ZnO nanowires with diameters of 80–100 nm and lengths of over 10 µm (aspect ratios ∼100∶1) have been successfully synthesized by a simple hydrothermal treatment of the zinc carbonate hydroxide hydrate (Zn4CO3(OH)6·H2O) obtained via a precipitation reaction between the solutions of Zn(NO3)2·6H2O and (NH4)2CO3. No surfactants, templates or catalysts were used during the whole process. ZnO nanowires can be obtained under hydrothermal conditions of 180–200 °C for 20 h, but they can not be synthesized at 160 °C for 20 h and pure ZnO can not be obtained at 200 °C for 5 h. The growth direction of the ZnO nanowires is [0 1 −1 0]. A dissolution–recrystallization–decomposition–growth mechanism is suggested for the formation of the ZnO nanowires. The as-synthesized ZnO nanowires show a strong UV emission peaking at ∼392 nm using a Xe lamp as the excitation source at room temperature.

Graphical abstract: Wet chemical synthesis of ultralong and straight single-crystalline ZnO nanowires and their excellent UV emission properties

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Publication details

The article was received on 02 Jul 2003, accepted on 07 Aug 2003 and first published on 21 Aug 2003


Article type: Paper
DOI: 10.1039/B307565F
Citation: J. Mater. Chem., 2003,13, 2551-2554
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    Wet chemical synthesis of ultralong and straight single-crystalline ZnO nanowires and their excellent UV emission properties

    J. Wang and L. Gao, J. Mater. Chem., 2003, 13, 2551
    DOI: 10.1039/B307565F

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