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Issue 16, 2014
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Template-free synthesis of α-GaOOH hyperbranched nanoarchitectures via crystal splitting and their optical properties

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Abstract

In this paper, a facile, template-free, one-step solvothermal method to synthesize size- and shape-controllable α-GaOOH with hierarchical nanoarchitectures has been developed. Hyperbranched α-GaOOH nanocrystals with a sheaf-like morphology has been prepared via the alcoholysis process with GaCl3 and methanol as the reactants in the presence of benzene as solvent at 160 °C within an autoclave. For the formation of α-GaOOH hierarchical nanoarchitectures, the crystal splitting growth mechanism plays the dominant role, which has been evidenced by the characterization of the time-dependent morphologies of the prepared samples. The UV-vis absorption spectra recorded at room temperature reveal that the obtained nanostructured α-GaOOH is a direct band gap semiconductor and the band gap Eg is estimated to be about 5.24 eV. Furthermore, a broad PL emission band can be clearly observed in the 425 to 575 nm spectrum range for the synthesized hyperbranched sheaf-like α-GaOOH nanoarchitectures.

Graphical abstract: Template-free synthesis of α-GaOOH hyperbranched nanoarchitectures via crystal splitting and their optical properties

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Article information


Submitted
22 Nov 2013
Accepted
14 Jan 2014
First published
15 Jan 2014

RSC Adv., 2014,4, 8209-8215
Article type
Paper

Template-free synthesis of α-GaOOH hyperbranched nanoarchitectures via crystal splitting and their optical properties

S. Wu, J. Zhang, L. Shi, S. Tang, Y. Li, L. Jiang and Q. Cui, RSC Adv., 2014, 4, 8209
DOI: 10.1039/C3RA46931J

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