复合软模板法可控制备红毛丹状AlOOH/Al2O3纳米材料

doi:10.3866/PKU.WHXB201307151

Abstract

Abstract:

Using PEG4000-DL-aspartic acid as a composite soft template, Al(NO₃)₃ as an aluminumsource and urea as an alkali source, homogeneous rambutan-shaped AlOOH nanomaterials were successfully synthesized by a simple heating method under atmospheric conditions. The effects of the concentrations of reactants and additives on the morphology and size of the particles were studied and the possible formation mechanismof the γ-AlOOH nanostructures was explored. The rambutan-like γ-AlOOH particles had a core-shell structure resembling a ball within a ball. Based on the statistical results fromSEMimages of the particles, the ball diameter, external diameter, shell thickness and length of burr-like projections were about 400, 600, 15 and 60 nm, respectively. Results indicate that γ-Al₂O₃ retained the morphology of the AlOOH precursor following calcination at 600℃ for 5 h. Brunauer-Emmett-Teller (BET) N₂-adsorption experiments showed that the specific surface area of rambutan-shaped γ-Al₂O₃ reached as high as 299.97 m²·g^-1.

Key words: Alumina nanostructure, Polyethylene glycol, DL-aspartic acid, Composite soft template, Atmospheric refluxing

XU Jing, QIANG Jin-Feng, WANG Rui-Juan, NIU Wen-Jun, SHEN Ming. Controllable Preparation of Rambutan-Shape AlOOH/Al₂O₃ Nanomaterials with a Composite Soft Template[J]. Acta Phys. -Chim. Sin. 2013, 29(10), 2286-2294. doi: 10.3866/PKU.WHXB201307151

References

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Controllable Preparation of Rambutan-Shape AlOOH/Al₂O₃ Nanomaterials with a Composite Soft Template

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Controllable Preparation of Rambutan-Shape AlOOH/Al₂O₃ Nanomaterials with a Composite Soft Template