2002•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access
Synthesis of Highly Ordered,Three-Dimensional, Macroporous Structure of Al_2O_3
LI Yu-guang
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Abstract
An ordered colloidal PS crystal was prepared with 500 nm of diameter.Three-dimensional macroporous Al 2O 3 was obtained by filling a precusor solution compounded of Al(NO 3) 3·9H 20,citric acid and ethanol into the interstices of the speres of the PS crystal and subsequent calcination under a slow heating rate and suitable temperature.Finally the white Al 2O 3 product was obtained.SEM images demonstrate that the product has highly ordered,three-dimensional,macroporous structure.The pore diameter is about 250 nm.