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Issue 48, 2014
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Template-free solvothermal preparation of ZnO hollow microspheres covered with c planes

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Abstract

ZnO hollow microspheres were prepared by a solvothermal method, without using a template. The morphology and structure of the microspheres were investigated by scanning and transmission electron microscopies. A series of controlled experiments was carried out to better understand the formation mechanism. The sample prepared at 150 °C for 1 h consisted of ZnO microspheres 1–2 μm in diameter. Microspheres were composed of crystallites of tens of nm in diameter. The surfaces of the microspheres prepared at 150 °C for 3 h were surrounded by hexagonal pyramid-like crystals, of a few hundred nm in diameter. The sample prepared by reaction at 150 °C for 6 h consisted of hollow spheres, even in the absence of a template. The microsphere surface consisted of ZnO c planes. ZnO hollow microspheres prepared at 150 °C for 12 h exhibited intense narrow ultraviolet emission.

Graphical abstract: Template-free solvothermal preparation of ZnO hollow microspheres covered with c planes

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Supplementary files

Article information


Submitted
01 Apr 2014
Accepted
28 May 2014
First published
28 May 2014

RSC Adv., 2014,4, 25148-25154
Article type
Paper
Author version available

Template-free solvothermal preparation of ZnO hollow microspheres covered with c planes

T. Ihara, H. Wagata, T. Kogure, K. Katsumata, K. Okada and N. Matsushita, RSC Adv., 2014, 4, 25148
DOI: 10.1039/C4RA02877E

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