In order to increase the catalytic activity of titanium dioxide (TiO₂) under visible light, a method for the synthesis of a complex sandwich catalyst based on nanotubular and sol–gel TiO₂ and colloidal cadmium sulfide (CdS) was developed. The use of titanium dioxide in the form of nanotubes allowed increasing the specific surface area of the catalyst, which is one of the main factors in increasing the efficiency of the catalysis process. At the same time, the presence of CdS nanoparticles made it possible to widen the spectral range of irradiation used. Using the methods of X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy a comprehensive characterization of the synthesized samples was carried out. In addition, their chemical and phase composition, as well as the size of the nanoparticles and their morphology, were established. The photocatalytic activity was determined under the visible light and ultraviolet of nanostructures in reactions involving the oxidation of acetone in the gas phase.

为了提高可见光下二氧化钛（TiO ₂）的催化活性，一种基于纳米管和溶胶-凝胶TiO ₂的复合夹心催化剂的合成方法并开发了胶体硫化镉（CdS）。以纳米管形式使用二氧化钛允许增加催化剂的比表面积，这是增加催化过程效率的主要因素之一。同时，CdS纳米粒子的存在使得有可能扩大所用辐射的光谱范围。使用X射线衍射，扫描电子显微镜和X射线光电子能谱方法对合成样品进行了全面表征。另外，确定了它们的化学和相组成以及纳米颗粒的大小和形态。在涉及丙酮在气相中氧化的反应中，在纳米结构的可见光和紫外线下测定了光催化活性。