A low-temperature technique for the formation of coatings based on ZnO nanorods decorated with colloidal AgInS2 quantum dots is presented. It is shown that ZnO nanocrystals and colloidal AgInS2 quantum dots with a shell of mercaptopropionic acid molecules form a heterojunction. Sensitization of ZnO nanorods with AgInS2 colloidal quantum dots to visible irradiation provides a gas analytical response of the structure to isopropyl alcohol vapor at room temperature under blue LED illumination with a peak wavelength of 460 nm.

The features of the formation of zinc stannate nanostructures are considered that are of interest for gas sensors, solar energy and conducting transparent electronics. The samples were obtained by hydrothermal method using zinc oxide nanorods as a template with the variation of synthesis time and investigated by X-ray photoelectron spectroscopy. It is shown that this method can be used to analyze the formation of zinc stannate.