Journal
CRYSTAL GROWTH & DESIGN
Volume 9, Issue 1, Pages 409-413Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg8006348
Keywords
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Funding
- National Natural Science Foundation (NSF) of China
- Government of Guangdong Province for NSF [U0734002, 50872158, 8251027501000010]
- industry program [2006B14701002, 2007B090400001]
- Open Foundation of Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology in SYSU [2006K0014]
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Double-sided comb-like ZnO nanoferns have been successfully synthesized via a one-step hydrothermal synthesis without using any catalysts or templates. Their structure and morphology were characterized by scanning electron microscopy, transmission electron microscopy, and Fourier fast transformation technique. A possible growth mechanism is proposed that the nanobranches are grown epitaxially from both (0001) side surfaces of a primarily formed backbone nanobelt. Photoluminescence and photocatalysis properties have been investigated at room temperature. The ZnO nanoferns exhibit enhanced visible emission and photocatalysis as compared to as-prepared ZnO nanorods. Typically, their photocatalysis can be comparable to commercial P-25, even higher than P-25. With a change of growth condition, more complex ZnO nanostructure arrays with additional secondary grown branches could be fabricated. The structural evolution of the hierarchically derivative ZnO nanofern arrays has been mentioned.
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