| Mg-Al层状双氢氧化物和MgAl2O4微纳结构制备 |
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| 引用本文： | 孙灵娜,洪伟良,周晓明. Mg-Al层状双氢氧化物和MgAl2O4微纳结构制备[J]. 深圳大学学报(理工版), 2011, 28(5): 449-453 |
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| 作者姓名： | 孙灵娜 洪伟良 周晓明 |
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| 作者单位： | 深圳大学化学与化工学院,深圳,518060 |
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| 基金项目： | 国家自然科学基金资助项目(21001074); 广东省自然科学基金博士启动项目(2008078)~~ |
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| 摘 要： | 以十六烷基三甲基溴化铵(cetyltrimethylammonium brom ide,CTAB)为表面活性剂,尿素为碱剂,采用溶剂热法合成Mg-A l层状双氢氧化物玫瑰花状结构和片球结构,通过高温煅烧制备花状结构的MgA l2O4.利用X射线衍射研究产物晶体结构,利用扫描电子显微镜分析产物形貌和粒径,考察表面活性剂添加量、反应物浓度和反应时间对产物形貌的影响.结果表明,表面活性剂CTAB的添加量为1 g时有利纳米片自组装,形成玫瑰花状结构或片球状结构;随反应物浓度增加,产物形貌从不规则的聚集体过渡到玫瑰花状结构,最终转变成片球状的微纳结构.
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| 关 键 词： | 化学材料工程 Mg-Al层状双氢氧化物 溶剂热法 微纳结构 自组装 花状结构 铝酸镁 |
Synthesis of Mg-Al layered double hydroxide and MgAl2O4 micro-nano structures |
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| SUN Ling-na,HONG Wei-liang,ZHOU Xiao-ming. Synthesis of Mg-Al layered double hydroxide and MgAl2O4 micro-nano structures[J]. Journal of Shenzhen University(Science &engineering), 2011, 28(5): 449-453 |
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| Authors: | SUN Ling-na HONG Wei-liang ZHOU Xiao-ming |
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| Affiliation: | SUN Ling-na,HONG Wei-liang,and ZHOU Xiao-ming College of Chemistry and Chemical Engineering Shenzhen University Shenzhen 518060P.R.China |
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| Abstract: | The Mg-Al layered double hydroxide micro-nano structures were prepared from urea by solvothermal method in the presence of surfactant(CTAB),and the MgAl2O4 flowerlike structures were synthesized by further calcination.The crystal structure and morphologies have been characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).Effects of surfactants,the concentration of reactants,and the reaction time on the morphological control of the products have been systematically studied.The results s... |
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| Keywords: | material-oriented chemical engineering Mg-Al layer double hydroxide solvothermal method micro-nano structures self-assembly flowerlike structures MgAl2O4 |
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