Disclosed is a method for direct application of a catalyst to a substrate for treatment of atmospheric pollution including ozone. The disclosed compositions are silyl compositions that can be directly coupled, or coupled through a linking group, to a compound of interest, preferably to an oligomer at the end of oligomer synthesis. The power connection line is connected with the power connector part and the heat generation device, so that when the power connection line is connected with an external power, the power connector part and heat generation device are in electric connection via the power connection line, and the heat generation device begins to produce heat. The upper body is connected to the base unit by a tilting joint such that the upper body and base unit are tiltable relative to each other about a tilt axis extending horizontally when the upright vacuum cleaner is in a position of use.