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Citation: GAN Li-Hua, LI Jian, SHA Hai-Xiang, CHEN Long-Wu. Preparation of Alumina Nanoparticles by Thermal Decomposition of Aluminum Tea-polyphenols[J]. Chinese Journal of Applied Chemistry, ;2003, 20(12): 1148-1151. shu

Preparation of Alumina Nanoparticles by Thermal Decomposition of Aluminum Tea-polyphenols

1.
Department of Chemistry, Tongji University, Shanghai 200092

Corresponding author: GAN Li-Hua,
Received Date: 24 April 2003
Available Online: 14 July 2003
Fund Project: 国家自然科学基金(29973029) (29973029)上海市科技发展基金(0216nm035)资助项目 (0216nm035)

Tea-polyphenols was chosen as a precipitant to react with aluminum ion in aqueous solution for preparing aluminum tea-polyphenols precursor, the optimal pH value of the reactant solution for complete precipitation was 5.6. When the precursor was heated at 1 030℃ in an O₂-rich atmosphere for 90~150 min, aluminum oxide powders with alumina content of 99.51% were prepared. The samples were characterized by DTA, TEM and XRD techniques. The resulting samples are nanomaterials consist of nearly spherical α-Al₂O₃ particles with diameter of 50 nm.
- aluminum tea-polyphenols,
- alumina,
- nanoparticle,
- thermal decomposition
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