Preparation and characterization of helical carbon/silica nanofibers with lamellar mesopores on the surfaces  

作　　者：Qing Wang Bao-Zong Li Yi Li 

机构地区：[1]Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application,Department of Polymer Science and Engineering,College of Chemistry,Chemical Engineering and Materials Science,Soochow University

出　　处：《Chinese Chemical Letters》2014年第2期253-256,共4页中国化学快报（英文版）

基　　金：supported by Natural Science Foundation of Jiangsu Province(No.BK2011354);the Priority Academic Program Development of Jiangsu High Education Institutions(PAPD);the National Natural Science Foundation of China(No.21104053, 21071103 and 21074086)

摘　　要：Helical 1,2-ethylene-silica nanofibers with lamellar mesopores on the surfaces and twisted rod-like mesopores inside were prepared according to literature procedures. After carbonization, helical carbon/ silica nanofibers with lamellar mesopores on the surfaces and twisted rod-like micropores inside were obtained. The morphologies and pore architectures of the carbon]silica nanofibers were characterized using transmission electron microscopy, field-emission scanning electron microscopy, powder X-ray diffraction and N2 sorptions. Although the mesopores inside shrank into micropores, the helical nanostructure remained. Moreover, several carbon/silica nanofibers with lamellar mesopores on the surfaces and concentric circular micropores inside were also obtained. After being calcined in air, helical silica nanofibers with lamellar mesopores on the surfaces and twisted rod-like micropores inside were produced as well.Helical 1,2-ethylene-silica nanofibers with lamellar mesopores on the surfaces and twisted rod-like mesopores inside were prepared according to literature procedures. After carbonization, helical carbon/ silica nanofibers with lamellar mesopores on the surfaces and twisted rod-like micropores inside were obtained. The morphologies and pore architectures of the carbon]silica nanofibers were characterized using transmission electron microscopy, field-emission scanning electron microscopy, powder X-ray diffraction and N2 sorptions. Although the mesopores inside shrank into micropores, the helical nanostructure remained. Moreover, several carbon/silica nanofibers with lamellar mesopores on the surfaces and concentric circular micropores inside were also obtained. After being calcined in air, helical silica nanofibers with lamellar mesopores on the surfaces and twisted rod-like micropores inside were produced as well.

关 键 词：Nanoparticles MESOPOROUS Carbon/silica Sol-gel preparation Structural 

分 类 号：TQ340.1[化学工程—化纤工业]