利用SiO_2欧泊制备高比表面积三维有序大孔碳  

Preparation of Three-Dimensionally Ordered Macroporous Carbon with High Specific Surface Area Using SiO_2 Opal as Template

作　　者：曹洁明[1] 郑明波[1] 常欣[1] 陈勇平[1] 姬广斌[1] 陶杰[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《南京航空航天大学学报》2005年第5期593-596,共4页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：通过自组装的方法制备了面心立方结构的S iO2欧泊,并利用其为模板,分别采用“体积模板”与“表面模板”两条途径,合成了两类不同结构的三维有序大孔碳材料,分析了填充次数对产物形貌结构的影响。通过场发射扫描电子显微镜和氮气等温吸附-脱附分析对所合成的三维有序大孔碳进行了表征。结果表明:两种结构的碳材料都保持了欧泊的三维有序性,并且具有高的比表面积与孔容。这类材料在催化、分离、吸附以及电极等领域有着广阔的应用前景。SiO2 opal with face centered cubic structure is fabricated using a self-assembly method. Two different three-dimensionally ordered macroporous carbon materials are prepared using SiO2 opal as a template through “volume templating” and “surface templating” approaches, respectively. The final morphology of the sample can be controlled by the infiltration times. The as-synthesized samples are characterized by field emission scanning electron microscopy and nitrogen adsorption-desorption meth- ods. Results show that these materials inherit the three-dimensionally ordered structure of SiO2 opals and have a high brunauer-emmett-teller （BET） surface area and a large pore volume. These materials have potential applications in catalysis, separation, adsorption, and electrode material fields.

关 键 词：SiO2欧泊 模板 大孔碳 制备 

分 类 号：O645[理学—物理化学] O648[理学—化学]