Device and method for gas-phase photocatalytic mechanism research

The invention provides a device for gas-phase photocatalytic mechanism research. The device comprises an infrared spectrometer, a gas inlet channel, a gas outlet channel and an illumination lamp; theinfrared spectrometer comprises a sample pool for bearing a catalyst and/or reaction gas, one end of the gas inlet channel is communicated with a raw material reaction gas channel, and the other end of the gas inlet channel is communicated with a sample pool gas channel; one end of the gas outlet channel is communicated with the sample pool gas channel; the sample pool is provided with a transparent glass window for light rays of the illumination lamp to penetrate through. The device and method are applied to gas-phase photocatalytic reactions such as carbon dioxide reduction, methane oxidation, carbon monoxide hydrogenation and methanol oxidation, adsorption species and intermediates can be subjected to in-situ dynamic tracking under the reaction condition, the change condition of intermediate species after illum