Co-MOF derivative photo-thermal catalyst for photo-thermal catalytic purification of VOCs as well as preparation method and application of Co-MOF derivative photo-thermal catalyst

The invention discloses a Co-MOF derivative photo-thermal catalyst for photo-thermal catalytic purification of VOCs as well as a preparation method and application of the Co-MOF derivative photo-thermal catalyst. The method comprises the steps of (1) taking pyridine-3, 5-dicarboxylic acid, cobalt nitrate and sodium hydroxide as raw materials, and preparing Co-MOFs through a room-temperature stirring method; and (2) pyrolyzing the Co-MOFs in an N2 inert atmosphere to obtain the Co/CoOx/NC photo-thermal catalyst. The photo-thermal catalyst prepared by the invention can simultaneously absorb full spectrum and convert the full spectrum into heat energy, so that the reaction of photo-thermal catalytic purification of VOCs is induced. Due to the coupling of the plasma metal Co, CoOx and porous carbon, the photothermal effect is enhanced, and the photothermal catalyst shows efficient VOCs oxidation performance under the irradiation of sunlight and is good in stability. The method is simple and feasible in process, h