乙烷桥联型介孔二氧化硅纳米球的制备与表征

Preparation and Characterization of Ethane-bridged Mesoporous Silica Nanospheres

本文采用表面活性剂导向溶胶-凝胶法,在碱性条件下,通过两种硅源成功制备了乙烷桥联型介孔纳米粒子(MSN)。在合成MSN的基础上,以γ-(甲基丙烯酰氧基)丙基三甲氧基硅烷(MPS)为改性剂对MSN表面进行了修饰。结果表明:合成的MSN呈规整的纳米级球体,界面高度交联,具有直径分布均匀(260nm)的无机-有机杂化骨架,其比表面积、介孔尺寸和孔容分别为540m^2/g、3.7nm和0.52cm^3/g。

Ethane bridged mesoporous nanoparticles (MSN) were successfully prepared by means of surfactant directed sol-gel method under alkaline conditions through two silicon sources. Based on the synthesis of MSN, the surface of MSN was modified by Methacryloxy propyl trimethoxyl silane (MPS). The results show that the interface of the synthesized MSN was highly cross-linked and had an inorganic-organic hybrid skeleton with unifonn diameter distribution (260 nm). The specific surface area, mesoporous size and pore volume of MSN were 540 m2/g, 3.7 nm and 0.52 cm3/g, respectively.