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Creating Ordered Macroporous MnO2 by Colloidal Crystals Template Methods
Ma Shaohong,Li Jianmin*,Ke Yanxiong,Pei Hongxia,Jiang Ke,Li Fanqing
Author NameAffiliationE-mail
Ma Shaohong Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026  
Li Jianmin* Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026 jmli@ustc.edu.cn 
Ke Yanxiong Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026  
Pei Hongxia Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026  
Jiang Ke Structure Research LaboratoryUniversity of Science and Technology of ChinaHefei 230026  
Li Fanqing Structure Research LaboratoryUniversity of Science and Technology of ChinaHefei 230026  
Abstract:
Using close-packed colloidal crystals-silica as the template,a novel 3D well-ordered and long-ranged periodic macroporous material MnO2 has been prepared by colloidal crystals template methods. The prepared product has been characterized by means of X-ray diffraction(XRD)and scanning electron micrography(SEM). The X-ray diffraction displays that the phase of MnO2 is tetragonal,and the scanning electron micrography shows that MnO2 replicates the structure of the started template and exhibits 3D long-range ordered honeycomb framework. The process of preparing the 3D order macroporous MnO2 was discussed. The effect of the infiltration times to the final morphology of MnO2 was studied and an abnormity existed in the shrinkage of the final outcome.
Key words:  Macroporous material,MnO2,Colloidal crystals template methods,Silica
FundProject:
三维有序二氧化锰大孔材料的模板技术合成及表征
马少红,李健民*,柯燕雄,裴洪霞,蒋珂,李凡庆
摘要:
以单分散SiO2胶态晶体球形成的三维有序结构为模板,利用胶体晶模板技术合成了三维长程有序的二氧化锰大孔材料.通过X射线粉末衍射(XRD)和扫描电子显微镜(SEM)对产物进行了表征.其中XRD数据显示所得产物为纯四方相二氧化锰.SEM结果表明,所合成的二氧化锰大孔材料孔大小均匀,空间排列高度有序,很好地复制了SiO2胶态晶体球的自组装方式.此外,对三维有序二氧化锰大孔材料的合成过程进行了分析,研究了前体填充次数对产物孔结构的完整性和有序性的影响,还发现产物孔径的收缩存在异常现象.
关键词:  大孔材料  二氧化锰  模板技术  二氧化硅
DOI:10.1088/1674-0068/17/6/745-751
分类号: