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Citation: SHEN Yong, WU Quan-Zhou, LI Yu-Guang. Three Dimensional Ordered Macroporous ZrO₂ Prepared by Directly Calcining ZrOCl₂[J]. Acta Physico-Chimica Sinica, ;2006, 22(09): 1121-1125. doi: 10.3866/PKU.WHXB20060917 shu

Three Dimensional Ordered Macroporous ZrO₂ Prepared by Directly Calcining ZrOCl₂

1.
(School of Chemistry and Chemical Engineering, SunYat-sen University, Guangzhou 510275, P. R. China)

Received Date: 9 March 2006
Available Online: 4 September 2006

Three dimensional ordered macroporous (3DOM) zirconium dioxides with pore diameters of about 500 nm are successfully prepared via a direct calcining step, using a methanol solution of ZrOCl2•8H2O as filling precursor and polystyrene sphere (PS) colloid crystals as templates. The method of synthesis is simple, quicker than other synthesis, and based on readily available precursors. Precursor concentration and a second filling of the 3D packed polystyrene spheres are important parameters in fine tuning the mechanical properties of the walls and achieving long range ordered materials. Low calcination temperature (≤500 ℃) introduces impurities in the wall structure of zirconia and crystallite phase transformation in the crystal structure. Excess high calcination temperature (≥ 800 ℃) leads the 3D wall structure destroyed and collapse. The BET behaviour of 3DOM-ZrO2 shows that pore wall has a non-porous structure, which agrees with the TEM results.
- ZrO2;Polystyrene sphere;3DOM;Colloid crystal
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沈阳化工大学材料科学与工程学院沈阳 110142

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Three Dimensional Ordered Macroporous ZrO2 Prepared by Directly Calcining ZrOCl2

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Three Dimensional Ordered Macroporous ZrO₂ Prepared by Directly Calcining ZrOCl₂