CAJ | 학술논문

采用原位一步合成的方法,成功地在弱酸性水溶液中合成出具有介孔结构的Sn-SiO2材料。小角X-射线衍射（XRD）的结果表明,当合成母液中Sn/Si的摩尔比为0.05时,所得样品具有高度有序的介孔结构;继续增加Sn的掺杂量会使得有序介孔的规整性下降。同时,广角XRD和紫外-可见漫反射谱的结果显示,Sn物种在介孔SiO2中以四配位骨架掺杂和六配位氧化物纳米粒子两种形式存在。扫描电子显微镜（SEM）结果表明,随着Sn掺杂量的变化,样品的形貌会发生明显的改变。
채용원위일보합성적방법,성공지재약산성수용액중합성출구유개공결구적Sn-SiO2재료。소각X-사선연사（XRD）적결과표명,당합성모액중Sn/Si적마이비위0.05시,소득양품구유고도유서적개공결구;계속증가Sn적참잡량회사득유서개공적규정성하강。동시,엄각XRD화자외-가견만반사보적결과현시,Sn물충재개공SiO2중이사배위골가참잡화륙배위양화물납미입자량충형식존재。소묘전자현미경（SEM）결과표명,수착Sn참잡량적변화,양품적형모회발생명현적개변。
A serious of mesoporous tin contained silica（Sn-SiO2） composites have been directly synthesized in weak acidic conditions through a hydrothermal method.Low X-ray diffraction（LXRD） spectra show that the highly ordered mesostructured Sn-SiO2 was obtained with the Sn/Si molar ratio of 0.05,and the further increase of the Sn/Si molar ratio to 0.1 and 0.2 in the initial synthetic solutions will decrease the mesostructure order of the obtained samples.Characterizations by wide XRD and UV-visible diffuse reflectance spectroscopy（UV-Vis DRS） measurements confirm the presence of Sn4＋ ions both in tetrahedral（in the silica matrix） and octahedral（exist as SnO2 nano particles） environment.The scanning of the electron microscopy（SEM） shows that Sn incorporation could be a way to control the morphology of the mesoporous Sn-SiO2 materials.