Photocatalytic Properties of a CO Catalyst Based on Titanium Dioxide and Silicon Carbide with Palladium Clusters Supported on Porous Nickel

A CO catalyst composed of 80 wt % TiO₂ + 10 wt % SiC + 10 wt % Pd and supported on porous nickel has been synthesized. The catalyst has been studied using XPS. The effect of UV radiation on the catalytic properties was investigated, and the catalyst was subjected to long-term testing over 60 days. It has been found that UV radiation at a power density of 0.15 W/cm² increases the rate of CO oxidation by 5 times, reduces the activation energy of the reaction rate constant, and improves the long-term stability of the catalytic properties. The activation energy of the reaction rate constant was determined to be 22 ± 1 kJ/mol in the temperature range from 283 to 313 K under UV illumination of the catalyst. The results can be used in photocatalytic air purification systems.