“…Due to its milder operating conditions, low-temperature plasma can generate high-energy electrons to bombard heavy particles when the macroscopic temperature is close to normal temperature, realizing a reaction process that could only occur at high temperature and high pressure under traditional conditions. 5 NTP (non-thermal-plasma) has been widely used in present industrial production, pollution control and other fields, such as the surface etching of nano materials, 6 dust-containing gas dust removal, 7 high COD wastewater degradation, 8 etc. Research studies on the direct degradation of NO x by low-temperature plasma were carried out as early as the 1990s, 9 but were hampered by a low degradation efficiency, poor target selectivity, and the creation of by-products causing secondary pollution.…”