摘要
通过调解正硅酸乙酯(TEOS)和NH_3·H_2O的加入量,采用共沉淀法可控地制备了一系列不同粒径(80～320 nm),且具有规则孔道结构的介孔二氧化硅纳米材料(MSNs),并利用小角X射线衍射(SAXRD)、透射电镜(TEM)、扫描电镜(SEM)及N_2吸附-脱附等方法对产物进行表征.实验结果表明:合成的样品均具有高度有序的孔道结构,为典型的MCM-41介孔二氧化硅纳米材料;采用合成后水热处理方法可提高材料的有序性和稳定性.
A series of highly ordered mesoporous silica nanoparticles（MSNs） with tunable particle sizes were synthesized by a direct co-condensation method.The hydrothermal post-treatment was adopted to improve the structure order of the materials characterized by small angle X-ray diffraction （SAXRD）,transmission electron microscopy（TEM）,scanning electron microscopy（SEM） and N_2 adsorption-desorption measurements.Then the highly ordered MSNs with tunable particle sizes from 80 nm to 320 nm were successfully prepared by changing the amount of TEOS and NH_3·H_2O.The results show that all the samples with well-ordered mesoporous structures are typical MCM-41 type mesoporous silica materials.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2013年第3期510-513,共4页
Journal of Jilin University:Science Edition
基金
国家自然科学基金(批准号:50573030)
