复合软模板法可控制备红毛丹状AlOOH/Al<sub>2</sub>O<sub>3</sub>纳米材料

引用本文: 许静, 强金凤, 王瑞娟, 牛文军, 沈明. 复合软模板法可控制备红毛丹状AlOOH/Al₂O₃纳米材料[J]. 物理化学学报, 2013, 29(10): 2286-2294. doi: 10.3866/PKU.WHXB201307151 shu

Citation: 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 Physico-Chimica Sinica, 2013, 29(10): 2286-2294. doi: 10.3866/PKU.WHXB201307151 shu

复合软模板法可控制备红毛丹状AlOOH/Al₂O₃纳米材料

基金项目:
国家自然科学基金(21273194) (21273194)

江苏高校优势学科建设工程资助项目

摘要:

以Al(NO₃)₃为铝源,尿素为均相沉淀剂, 在聚乙二醇400(PEG4000)-DL-天冬氨酸形成的复合软模板体系中, 通过简单的常压回流方式成功合成出形貌和尺寸较为均一的红毛丹状γ-AlOOH纳米结构, 继而考察了反应物和添加剂用量对前驱体形貌和尺寸的影响, 并对γ-AlOOH纳米结构可能的形成机理进行了探讨. 实验结果表明, 所合成的红毛丹状γ-AlOOH具有球中球的核壳结构, 统计得内球直径约为400 nm, 外壳外径约为600 nm, 密集状态的壳层厚度约为15 nm, 毛刺状凸出物长度可达60 nm以上. 前驱体样品经600℃煅烧5 h后即转变为具有良好形貌继承性的γ-Al₂O₃, Brunauer-Emmett-Teller (BET) N₂-吸附实验表明其比表面积高达299.97 m²·g^-1.

关键词:

English

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

1.
College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu Province, P. R. China
Received Date: 02 May 2013
Available Online: 26 September 2013
Fund Project:
国家自然科学基金(21273194)

江苏高校优势学科建设工程资助项目

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:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

复合软模板法可控制备红毛丹状AlOOH/Al₂O₃纳米材料

English

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

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

复合软模板法可控制备红毛丹状AlOOH/Al2O3纳米材料

English

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

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

复合软模板法可控制备红毛丹状AlOOH/Al₂O₃纳米材料

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

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs