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Citation: Wu Quan-Zhou, Shen Yong, Li Yu-Guang. A New Route to Fabricate Highly Ordered Three-dimensional Macroporous Al₂O₃[J]. Acta Physico-Chimica Sinica, ;2003, 19(08): 737-741. doi: 10.3866/PKU.WHXB20030813 shu

A New Route to Fabricate Highly Ordered Three-dimensional Macroporous Al₂O₃

1.
School of Chemistry and Chemical Engineering, Sun Yat-Sen (Zhongshan) University, Guangzhou　510275

Received Date: 17 February 2003
Available Online: 15 August 2003

Using low-cost Al(NO3)3•9H2O as raw material and citric acid as chelator, highly ordered three-dimensional macroporous (3DOM) Al2O3 with pore size of 250～350 nm has been successfully fabricated by a template method in which polystyrene colloidal crystal with diameter of about 600 nm were used as template. The TGA, TG-IR and SEM observations show that adding citric acid is in favor of forming the three-dimensional ordered structure since it can avoid forming agglomerated particles during heat treatment. Within the range of 0.5～0.8 mol•L－1 of the precursor concentration, the Al2O3 samples obtained are highly ordered three-dimensional macroporous materials, and such macroporou structure is maintained up to 1 100 ℃,showing a high thermostability.
- Three-dimensional ordered macropore;Al₂O₃;Polystyrene colloidal 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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A New Route to Fabricate Highly Ordered Three-dimensional Macroporous Al2O3

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通讯作者: 陈斌, bchen63@163.com

A New Route to Fabricate Highly Ordered Three-dimensional Macroporous Al₂O₃