Fabrication and structural analysis of three-dimensionally well-ordered arrangements of silicon oxycarbide microparticles
Fabrication and structural analysis of three-dimensionally well-ordered arrangements of silicon oxycarbide microparticles
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DOI：
10.1016/j.cej.2007.04.028
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发表时间：
2008-02
影响因子：
15.1
通讯作者：
G. Guan;K. Kusakabe;Haruka Ozono;M. Taneda;M. Uehara;H. Maeda
中科院分区：
文献类型：
--
作者：
G. Guan;K. Kusakabe;Haruka Ozono;M. Taneda;M. Uehara;H. Maeda
以二氧化硅反蛋白石结构为模具，采用浸渍法制备了由碳化硅（SiOxCy）微粒组成的三维有序组装体。以聚碳硅烷为前驱体进行SiOxCysynthesis。研究了聚碳硅烷溶液粘度对制备的sioxcy微粒子及其组装体形貌的影响。发现浸润过程的理想粘度约为2.0 mpa。通过SEM、XRD、FT-IR、n2吸附等手段分析了所制备的sioxcy微粒子的结构及其组装。每个SiOxCymicroparticle通过桥接的方式与相邻的microparticle结合，这可以提高制备的SiOxCymicroparticle assembly的机械强度。
A three-dimensionally (3D) well-ordered assembly composed of silicon oxycarbide (SiOxCy) microparticles was fabricated by an infiltration process using SiO2inverse opal structures as molds. Polycarbosilane was used as the precursor for the SiOxCysynthesis. The effect of the viscosity of polycarbosilane solution on the morphology of the fabricated SiOxCymicroparticles and their assemblies was investigated. The ideal viscosity for the infiltration process was found to be approximately 2.0mPas. The structures of the SiOxCymicroparticles obtained and their assemblies were analyzed by SEM, XRD, FT-IR, and N2adsorption. Each SiOxCymicroparticle was bonded to neighboring microparticles by bridge formation, which could enhance the mechanical strength of the prepared SiOxCymicroparticle assembly.