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Facile H2O2 Hydrothermal Synthesis of Bimodal Mesoporous Silica MCM-48 Spheres
Dong Tian1,2, Guo-ping Yong*1, Hong-wu Ton1, Shao-min Liu*1
1.Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;2.Department of Chemistry, Huainan Normal College, Huainan 232001, China
Abstract:
The ordered bimodal mesoporous silica MCM-48 spheres were facile synthesized by mild-temperature post-synthesis H2O2 hydrothermal treatment of as-synthesized MCM-48. The results showed that H2O2 is indispensable for simultaneously removing organic templates and forming ordered bimodal mesoporous silica MCM-48 spheres. The bimodal mesoporous MCM-48 was characterized by X-ray diffraction, transmission electron micrographs, FT-IR, and N2 adsorption-desorption, and a possible mechanism was proposed for the formation of bimodal mesoporous MCM-48.
Key words:  MCM-48, Bimodal mesoporous silica, Hydrothermal method, H2O2
FundProject:
H2O2水热合成双峰介孔硅MCM-48球
田冬1,2, 雍国平*1, 童红武1, 刘少民*1
1.中国科学技术大学化学系,合肥230026;2.淮南师范学院化学系,淮南232001
摘要:
在温和的条件下,通过H2O2水热处理预合成的MCM-48,得到了有序的双峰介孔硅MCM-48球. 结果表明H2O2对于同时去除有机模板剂及形成双峰介孔硅MCM-48球具有重要的作用.采用XRD、TEM、FT-IR和N2吸附-解吸等方法对双峰介孔MCM-48材料进行了表征,对双峰介孔MCM-48的形成机理也进行了探讨.
关键词:  MCM-48,双峰介孔硅,水热方法,H2O2
DOI:10.1088/1674-0068/23/04/479-483
分类号: