非水体系模板法合成新颖形貌氮化硅基材料  

Template Assisted Synthesis of Silicon Nitride-based Materials with Novel Morphologies in Nonaqueous System

作　　者：曹洁明[1] 马贤佳[1] 陆红霞[1] 侯海涛[1] 徐国跃[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院纳米材料研究所,南京210016

出　　处：《化学学报》2005年第17期1638-1640,F0008,共4页Acta Chimica Sinica

摘　　要：以乙腈为溶剂,十八胺为模板剂通过非氧化物溶胶-凝胶过程合成了新颖形貌的氮化硅基材料.通过X射线衍射(XRD),透射电子显微镜(TEM),扫描电子显微镜(SEM),N2吸附-脱附和电子能谱(EDS)对样品进行了表征.结果显示,材料呈现出由薄膜组成的花瓣状和树叶状新颖形貌,且具有很高的比表面积和孔径分布很窄的纳米孔,同时证明了在非水体系中表面活性剂也存在自组装现象,从而可以作为模板剂来合成具有特殊介观结构和形貌的材料.Novel mesostructured silicon nitride-based materials were synthesized for the first time by usmg acetonitrile as the solvent and octadecylamine as the template in the non-oxide sol-gel process. The synthesized samples were characterized by XRD, TEM, SEM, N2 adsorption-desorption isotherm and energy dispersive spectroscopy. Characterization results indicate that these materials are flower-like and leaf-like thin film materials with high surface area and nanoporosity of narrow distribution in pore size. This study also suggests capable self-assembly of some surfactants into association in non-aqueous media, which has potential application to template the synthesis of materials with novelty in structures and morphologies. The formation mechanism of materials was preliminarily discussed.

关 键 词：非氧化物溶胶凝胶 自组装 氮化硅基材料 形貌 模板法合成 硅基材料 非水体系 氮化 溶胶-凝胶过程 透射电子显微镜 

分 类 号：TQ127.2[化学工程—无机化工]