Automatic sample injection mobile phase photocatalytic reaction device

The present invention discloses an automatic sample injection mobile phase photocatalytic reaction apparatus, which comprises a catalysis system and a gas diversion system, the catalysis system comprises: a photocatalytic reactor having a reaction gas inlet, a reaction product outlet and a reactant inlet; the catalyst tank is arranged in the reaction cavity; the light source device is used for irradiating light into the reaction cavity; the automatic sample injector is used for conveying a reactant into the reaction cavity; the gas diversion system is used for conveying reaction gas into the reaction cavity through the reaction gas inlet. The reaction agent and the reaction gas are continuously supplied to the photocatalytic reactor, the reaction agent is attached to the surface of the catalyst through illumination evaporation, and a gas-liquid-solid three-phase interface is formed by the reaction agent and the continuously flowing reaction gas, so that the catalytic action is generated. The whole catalytic r