在离子液/水体系中超声合成MoO_3纳米棒及其表征(英文)  

Sonochemical Synthesis and Characterization of MoO_3 Nanorods in Ionic Liquids/Water Systems

作　　者：蔺红桃[1,2] 李红玲[1,2] 陈小亚[1,2] 杨敏[1] 齐彦兴[1] 

机构地区：[1]中国科学院兰州化学物理研究所精细石油化工中间体国家工程研究中心,甘肃兰州730000 [2]中国科学院研究生院,北京100049

出　　处：《分子催化》2010年第2期99-104,共6页Journal of Molecular Catalysis(China)

基　　金：National High Technology Research and Development Program of China(863)(Grant No.2007AA03Z331)

摘　　要：采用超声波的方法在离子液（1-丁基-3-甲基氯代咪唑盐离子液，[BMIM]Cl）中合成了直径分布在80-150nm的MoO3纳米棒．采用X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、场发射扫描电子显微镜（FESEM）、高分辨透射电子显微镜（HRTEM）和选区电子衍射（SAED）对所合成材料的微观结构和形貌进行了表征．此外，考察了反应时间、加入[BMIM]Cl的量以及其它咪唑基离子液对产物的影响并提出了可能的反应机理．最后对在不同温度煅烧下所得的α-MoO3的甲烷催化燃烧活性进行了表征．Hexagonal MoO3 nanorods with diameters of between 80 - 150 nm were synthesized in ionic liquids （1-butyl-3-methylimidazolium chloride, [ BMIM ] Cl/water solutions by ultrasonic method. The microstructure and morphology of the products were characterized by the techniques of X-ray powder diffraction （ XRD）, Fourier-transform spectrometer （ FTIR） , field emission scanning electron microscope （FESEM） , High-resolution transmission electron microscope （HRTEM） and selected area electron diffraction （SAED）. The influences factors such as reaction duration, the amount of [ BMIM] Cl and other imidazolium ionic liquids were investigated in detail. The reaction mechanism was also discussed. In addition, catalytic combustion of methane was investigated on α-MoO3nanorods prepared by calcining the as-prepared products at different temperatures.

关 键 词：纳米材料 表征 催化剂 MOO3 超声 

分 类 号：O643.32[理学—物理化学]