High-entropy oxide aerogel composite catalyst as well as preparation method and application thereof

The invention discloses a high-entropy oxide aerogel composite catalyst and a preparation method and application thereof.The catalyst is spherical and comprises a substrate supporting layer, a heat preservation stabilizing layer, a semiconductor catalyst layer and an active modification layer from inside to outside, and the substrate supporting layer, the heat preservation stabilizing layer, the semiconductor catalyst layer and the active modification layer are connected through chemical bonds; wherein the substrate supporting layer is made of foamed nickel, sunlight can be effectively absorbed and converted into heat energy, and the energy utilization efficiency is improved; the heat-preservation stable layer is made of silicon dioxide or aluminum oxide, so that heat loss and loss can be effectively prevented; the semiconductor catalyst layer is composed of oxide aerogel, and the high specific surface area and good thermal stability of the semiconductor catalyst layer are beneficial to improvement of the eff