分级结构多酸微米管的合成及对阿霉素的吸附

摘要

通过简单的无模板法，由三缺位α-SiW9多金属氧酸盐制得了饱和Keggin结构SiW12多金属氧酸盐的微米管状晶体，并通过红外光谱、热重分析和X射线粉末衍射对其进行了表征。采用光学显微镜和扫描电子显微镜观察到所合成的分级结构管状晶体具有微米级空腔和管壁的纳米级孔隙。将阿霉素( DOX)吸附于所制备的SiW12微米管中，得到了负载阿霉素的DOX@SiW12微米管，其在紫光和绿光的激发下可显示阿霉素的特征红光。%Saturated Keggin-type SiW12 microtubes have been synthesized from the trivacant SiW9 by a simple template-free method. The microtubes were characterized by Fourier transform infrared( FTIR) spectroscopy, powder X-ray diffraction( PXRD) and thermogravimetric analysis( TGA) . The hierarchical structure was exa-mined by optical micrograph and field emission enviromental scanning electron microscope( ESEM) . To apply the hierarchical structure, doxorubicin( DOX) was adsorbed in the as-prepared SiW12 microtubes, and DOX-loaded microtubes were obtained, which showed red luminescence of doxorubicin under violet light excitation.