纳米γ-AlOOH分级结构溶剂热制备及吸附性能研究  

Solvothermal Synthesis of Hierarchical Structures Nano γ-AlOOH and Its Adsorption Performance

作　　者：任海深[1] 田中青[1] 孟范成[1] 

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400050

出　　处：《硅酸盐通报》2015年第1期199-203,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51102289)

摘　　要：以Al（NO3）3·9H2O和尿素为原料、无水乙醇-水混合液为溶剂,采用溶剂热法150℃、6h条件下制备了叶片状分级结构γ-AlOOH。通过X射线衍射（XRD）、透射电镜（TEM）及紫外-可见吸收光谱测试（UV-vis）等手段对所得产物进行表征,研究了尿素对纳米γ-AlOOH形貌以及对刚果红吸附性能的影响。实验结果表明,当尿素摩尔量为0.4mmol时产物为叶片状分级结构γ-AlOOH,由长度在1.5-2μm范围、厚度约几个nm的纳米片自组装而成,且对刚果红表现出吸附性能最佳,其吸附率为98%。Leaf-like hierarchical structures γ-Al OOH was prepared by a facile template-free solvothermal method at 150 ℃ for 6 h,using aluminum nitrate（ Al（ NO3）3·9H2O） and urea（ CO（ NH2）2） as source and a mixed water / ethanol solution as solvent. The obtained samples were characterized by XRD,TEM and UV-vis. The influence of molar weight of the urea on the final product ＇s morphology and its adsorptive property was also examined. Experiment results indicated that the leaf-like hierarchical structures γ-Al OOH was obtained by self-assembly nanosheets with 1. 5-2 μm in lengths and several nanometer in diameter when molar weight of urea is 0. 4 mmol. Meanwhile the obtained hierarchical γ-Al OOH showed excellent adsorption properties for Congo red（ CR） with adsorption rate of 98%.

关 键 词：勃姆石 叶片状结构 溶剂热法 吸附 分等级结构 

分 类 号：O64[理学—物理化学]