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     As of 2013, research on the mechanism of low-temperature plasma is believed to be the result of particle inelastic collisions. Low temperature plasmon is rich in electrons, ions, free radicals and excited state molecules. Among them, high-energy electrons collide with gas molecules (atoms) to convert energy into internal energy of ground state molecules (atoms), and a series of excitation, dissociation and ionization occur. The straw is in an activated state.

    On the one hand, the gas molecular bonds are opened, and some single molecules and solid particles are generated; on the other hand, force is produced. OH, H2O2. Such as free radicals and highly oxidizing O3, high-energy electrons play a decisive role in this process, and the thermal movement of ions has only side effects. Under normal pressure, the electron temperature in the highly non-equilibrium plasma generated by gas discharge is much higher than the gas temperature (around 100°C at room temperature). Various types of chemical reactions may occur in non-equilibrium plasma, which are mainly determined by the average energy of electrons, electron density, gas temperature, concentration of harmful gas molecules and ≥ gas composition. This provides for some reactions that require large activation energy, such as the removal of difficult-to-degrade pollutants in the atmosphere. In addition, it can also treat low-concentration, high-velocity, high-air volume volatile organic pollutants and sulfur-containing pollutants. The common method of generating plasma is gas discharge. The so-called gas discharge refers to the ionization of an electron from gas atoms or molecules through a certain mechanism.

    The gas medium formed is called ionized gas. If the ionized gas is generated and formed by an external electric field Conducting current, this phenomenon is called gas discharge. According to the mechanism of discharge, gas pressure source properties and electrode geometry, gas discharge plasma is mainly divided into the following forms:

① glow discharge;

③ dielectric barrier discharge;

④ radio frequency discharge;

⑤ microwave discharge.

    Regardless of the type of plasma generated, high-voltage discharge is required. It is easy to spark and cause danger. Due to the treatment of gaseous pollutants, it is generally required to be carried out under normal pressure.