摘要
在二(2—乙基己基)磺基琥珀酸钠/n-C7H16H2O(AOT)微乳液体系中制备出Keggin型多金属氧酸盐Cs3PMo12O40·12H2O纳米粒子,由透射电镜照片观察到这种球形纳米粒子的平均尺寸为60nm.当杂多酸阴离子PMo12O3-40的浓度增大到50mol/m3时,粒子直径增加到200nm.IR光谱和X射线粉末衍射测定结果表明:纳米粒子中的PMo12O3-40阴离子仍然保持Keggin结构,并且这些纳米粒子的固相为结晶态.
The nanoparticles of polyoxometalates (POMs) with Keggin structure,Cs_3PMo_(12)O_(40)·12H_2O,was prepared by the microemulsion media method which was performed in AOT/n-heptane/water system.TEM photographs of the Cs_3PMo_(12)O_(40)·12H_2O nanoparticles showed that the mean diameters of the spherical particles is 60 nm.It have been found that,under the same reaction condition the mean diameters of the nanoparticles increased to ca.200 nm when the concentration of reactant POMs was more than 50 mol/m^3.IR spectrum of the nanoparticles indicated that Keggin structure of Cs_3PMo_(12)O_(40)·12H_2O nanoparticles still remain.XRD pattern of the nanoparticles revealed that these solids are of crystallization.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期138-140,共3页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(39870895)
