Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 183, Issue 7, Pages 1632-1639Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2010.05.015
Keywords
Cupric oxide; Hollow nanosphere; Interface-assisted synthesis; Bubble template; Surface photovoltage properties; Photocatalytic activity
Funding
- National Science Foundation of China [20671061]
- National Basic Research Program of China [2009CB930400]
- Education Ministry of China
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CuO hierarchical hollow nanostructures, assembled by nanosheets, were successfully prepared in n-octanol/aqueous liquid system through a microwave approach. Controlled experiments revealed that both bubble and interface play key roles in determining the self-assembly process of CuO hierarchical hollow nanostructures, and the morphology/size of building blocks and final products could be readily tuned by adjusting reaction parameters. Furthermore, a self-assembly mechanism of aggregation-then-growth process through bubble template was proposed for the formation of the hollow hierarchical architectures. Photocatalytic performance evidenced that the obtained CuO hierarchical hollow nanostructures possessed superior photocatalytic efficiency on RhB than that of non-hollow nanostructures, which could be easily demonstrated by SPS response about the separation and recombination situation of photogenerated charges. Crown Copyright (C) 2010 Published by Elsevier Inc. All rights reserved.
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