摘要
Using polystyrene(PSt) microspheres as template which particle average diameter was 200 nanometers and PVP,vanadium sol for reacting medium,the nanoscale vanadium precursors were precipitated on the surface of microspheres.After liquid and solid separating,washing,desiccating and finally burning for precursors at 530℃,the hollow sphere,vanadium pentoxide with particle diameter 1～1.5μm were made.The characterization of morphological properties,hollow structure and phase composition of products were analyzed using SEM,TEM and XRD.The reaction mechanism of hollow sphere vanadium pentoxide and infecting factors of experiments were studied.The results indicate that through controlling the quantity of PVP,PSt,NMP and vanadium compound can insure getting hollow sphere vanadium pentoxide when reaction time was between 5.5 and 6.5 hours and temperature was 90℃.
Using polystyrene （PSt） microspheres as template which particle average diameter was 200 nanometers and PVP, vanadium sol for reacting medium, the nanoscale vanadium precursors were precipitated on the surface of microspheres. After liquid and solid separating, washing, desiccating and finally burning for precursors at 530℃ ,the hollow sphere,vanadium pentoxide with particle diameter 1 - 1.5 μm were made. The characterization of morphological properties, hollow structure and phase composition of products were analyzed using SEM, TEM and XRD. The reaction mechanism of hollow sphere vanadium pentoxide and infecting factors of experiments were studied. The results indicate that through controlling the quantity of PVP, PSt, NMP and vanadium compound can insure getting hollow sphere vanadium pentoxide when reaction time was between 5.5 and 6.5 hours and temperature was 90℃.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2007年第12期1382-1384,共3页
Chemical Research and Application
基金
国家自然科学基金(50574063)项目资助
关键词
聚苯乙烯微球
五氧化二钒中空微球
模板法
polystyrene mierospheres
hollow sphere vanadium pentoxide
template methode
