期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 93, 期 11, 页码 3726-3731出版社
WILEY
DOI: 10.1111/j.1551-2916.2010.03984.x
关键词
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资金
- Hong Kong RGC [415206, 2150491]
We report a biotemplating approach to produce porous ZnO nanostructures. In the synthesis, a biotemplate cut from silkworm cocoon was treated with the cetyltrimethylammonium bromide (CTAB) surfactant and soaked in the Zn(NO3)(2)center dot 6H(2)O solution before it was annealed at similar to 650 degrees C in air. The biotemplate was transformed to a hierarchically interwoven network with hollow fibers composing of ZnO nanometer-sized crystallites. During their formation, micelles of the CTAB molecules attached to the silk transformed the surface charge of the fibers from negative to positive. Consequently, the negatively charged Zn(OH)(4)(2-) ions self-assembled onto the silk fibers through electrostatic interaction. Further annealing eliminated the organic components of the fibers resulted in a porous ZnO network.
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