利用乙二胺-水蒸汽进行气相转化（VPT）制备超薄、取向MFI沸石膜，通过将MFI纳米片沉积层转化为致密的沸石膜，实现了膜厚度的有效控制。扫描电子显微镜和X射线衍射表明，制备的沸石膜膜厚度约为280 nm，具有高度b轴取向的致密结构。丁烷异构体双组分分离测试结果表明，在333 K下，等物质的量的正丁烷/异丁烷混合物的正丁烷渗透速率和分离因子分别为1.5×10^-7 mol·m^-2·s^-1·Pa^-1和14.8。Na₂SiO₃作为低聚硅源在MFI沸石纳米片二次生长过程中能够提供硅源和碱度，通过在胺类蒸汽中实现MFI沸石纳米片间的融合生长，进一步提高了膜的取向度和致密性。

A simple two-step hydrothermal method synthesized four different CdS/Fe₃O₄ photocatalysts with varying ratios of mass of CdS to Fe₃O₄. The composition and morphology of the prepared samples were investigated using X-ray diffraction (XRD), Raman spectrum, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Solid UV reflectance spectra testing found that CdS/Fe₃O₄ nanocomposites had good light absorption throughout the spectral range, promoting their photocatalytic properties. Under visible light irradiation, CdS/Fe₃O₄ (2:5) with a mass ratio of 2:5 exhibited excellent photocatalytic performance, with a degradation rate of 98.8% for rhodamine B. Furthermore, after five cycles of photocatalytic degradation reaction, the rhodamine B degradation rate remained at 96.2%, indicating that the photocatalysts have good photocatalytic stability.