具有高比表面的介孔Co-SiO_2微球的合成与表征

Synthesis and Characterization of Mesoporous Co-SiO_2 Spheres with High Surface Area

在碱性条件下 ,利用十六烷基三甲基溴化铵 (CTAB)为结构导向剂 ,以含氨基有机硅烷与过渡金属离子 Co( )形成的配合物 Co( ) -APTMOS为金属离子前驱体 ,合成了含金属元素钴的介孔 Co-Si O2 微球 .运用 XRD,TEM以及 N2 -吸附等技术对所制备的产物进行了表征 .结果表明 ,产物为具有高比表面、孔道无序的介孔微球 .同时阐述了金属离子以配合物 Co-APTMOS形式加入反应体系的优越性 .

In basic media, millimeter sized mesoporous Co SiO 2 spheres were synthesized successfully through the introduction of Co(Ⅲ) APTMOS complex into the reaction mixture with cetyltrimethylammonium bromide(CTAB) as a structural template. The products are characterized by N 2 adsorption, HRTEM, SEM, and ICP techniques. The results show that the mesoporous Co SiO 2 spheres have a high surface area and disordered pores. Furthermore, the advantage of using Co(Ⅲ) APTMOS complex as the source of metal element Co is discussed.