Laboratoire de Physique de l'Etat Condensé (LPEC), UMR CNRS 6087, Université du Maine, 72085 Le Mans Cedex 09, France.
J Phys Condens Matter. 2010 Dec 1;22(47):474005. doi: 10.1088/0953-8984/22/47/474005. Epub 2010 Nov 15.
The structural optimization of highly mesoporous silica thin film templated with Brij58 is reported in this paper. The best conditions for obtaining well organized films are studied as a function of the concentration of surfactant, the relative humidity (RH) and the aging time of the solutions used in the dip-coating process. We first show on the basis of the results obtained by small angle x-ray scattering (SAXS) experiments on the binary system Brij58/water that the structure of the films determined by grazing incidence (GI) SAXS experiments can be explained according to a specific equation involving the initial masses of the sol constituents. Then the structural properties of the films are investigated by x-ray reflectivity (XRR) and GISAXS before and after removing the surfactant. The mesoporosities and morphology of the films are determined by analyzing the reflectivity curves of the highly ordered silica thin films in the cubic phase.
本文报道了用 Brij58 模板制备的具有高度中孔的二氧化硅薄膜的结构优化。研究了获得组织良好的薄膜的最佳条件，作为表面活性剂浓度、相对湿度 (RH) 和浸涂过程中使用的溶液陈化时间的函数。我们首先根据在二元体系 Brij58/水中进行的小角 X 射线散射 (SAXS) 实验结果表明，通过掠入射 (GI) SAXS 实验确定的薄膜结构可以根据涉及初始溶胶成分质量的特定方程来解释。然后，通过在去除表面活性剂前后进行 X 射线反射率 (XRR) 和 GISAXS 研究了薄膜的结构性质。通过分析高度有序的二氧化硅薄膜在立方相中的反射率曲线，确定了薄膜的中孔率和形貌。
