Lee Chang Geun, Ahn Ahreum, Lee Seung Jun, Lee Jin-Kook, Choi Myong Yong, Jung Jong Hwa
Department of Polymer Science and Engineering, Pusan National University, Pusan 609-735, Korea.
J Nanosci Nanotechnol. 2011 Apr;11(4):3696-700. doi: 10.1166/jnn.2011.3605.
Novel inorganic-organic hybrid hollow nanospheres, acrylated SiO2 and SiO2@TiO2, were synthesized via a sol-gel polymerization, using crown-appended sugar gelator 1 as an organic template for the unique nanospherical structures in demand for a fast expanding area in nanomaterial research. In this work, hollow SiO2 nanospheres were obtained by a simple sol-gel method followed by calcination and rather rough TiO2 nanolayers were coated onto the highly dispersed surface of SiO2 nanospheres and further copolymerization of MPA on the surface of SiO2 and SiO2@TiO2 nanosphseres was successfully conducted. The morphological properties of those hollow nanospheres were characterized by TEM, SEM and powder-XRD. Furthermore, the physical and chemical properties of the synthesized nanocomposites were characterized by the analysis of EDX, FT-IR, TGA and ESCA.
通过溶胶 - 凝胶聚合反应合成了新型无机 - 有机杂化中空纳米球，丙烯酸化二氧化硅（acrylated SiO₂）和二氧化硅@二氧化钛（SiO₂@TiO₂），使用冠醚修饰的糖凝胶剂1作为有机模板，以获得纳米材料研究中快速发展领域所需的独特纳米球结构。在这项工作中，通过简单的溶胶 - 凝胶法，随后进行煅烧获得了中空二氧化硅纳米球，并在二氧化硅纳米球高度分散的表面上涂覆了相当粗糙的二氧化钛纳米层，并且成功地在二氧化硅和二氧化硅@二氧化钛纳米球表面进行了3 - 巯基丙酸（MPA）的共聚反应。通过透射电子显微镜（TEM）、扫描电子显微镜（SEM）和粉末X射线衍射（powder - XRD）对这些中空纳米球的形态特性进行了表征。此外，通过能量散射X射线能谱（EDX）、傅里叶变换红外光谱（FT - IR）、热重分析（TGA）和电子能谱化学分析（ESCA）对合成的纳米复合材料的物理和化学性质进行了表征。
