Journal
NANOTECHNOLOGY
Volume 20, Issue 15, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/15/155604
Keywords
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Funding
- National Basic Research Program of China [2007CB936604]
- Natural Science Foundation of China [50302010, 90406008]
- Special Foundation of President of Hefei Institutes of Physical Science
- Chinese Academy of Sciences [084N481134]
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Hierarchical structured SiO2@gamma-AlOOH spheres were fabricated in one step by using silica colloidal spheres as a template. Scanning electron microscopy and transmission electron microscopy investigation showed that the shell is composed of large amounts of nanoscale gamma-AlOOH lamellas. The growth mechanism was proposed as silica template-induced heterogeneous deposition of gamma-AlOOH lamellas. The adsorption properties of hierarchical SiO2@gamma-AlOOH spheres annealed at different temperatures were investigated through the removal test of Cr(VI) ions in model wastewater, and the nanostructures annealed at 400 degrees C showed good adsorption capability of Cr(VI) ions.
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