OmachinesMicromachines 2021, 12,two ofelectron excitation temperature reaches 0.7 eV. This experimental result shows that the usage of grid electrodes can generate high-intensity discharge close to the electrode, and also the electron temperature can attain 0.7 eV. Lu et al. [19] created a DBD Aztreonam Data Sheet reactor with TiO2 thin film to improve the discharge intensity, too because the quantity of reactive species and charges accordingly. It could be seen that adding a catalyst for the surface on the dielectric layer is definitely an efficient approach to increase the discharge intensity. Zhao et al. [20] reported a packed-bed DBD reactor with glass beads for gaseous NOx removal. It was discovered that the intensity of discharge was enhanced. This is simply because the dielectric beads alter the Nitrocefin medchemexpress distribution with the electric field because of the polarization at the glass bead surfaces. It must be noted that the system of altering the gas pressure, electrode shape, and adding catalyst or dielectric beads can efficiently raise the electric field strength. However, whether the discharge modes changes in the reactor has not been studied. As is well-known, the electric field strength of your discharge gap changes the discharge mode. Abdelaziz et al. [21] investigated the effect of discharge electrode spike on discharge mode. The results showed that oxygen DBD is efficient inside the streamer mode at all frequencies and at atmospheric pressure. Li et al. [22] identified that the discharge mode alterations from Townsend discharge to glow discharge as the electric field strength increases under sinusoidal excitation. It was also located that below sinusoidal excitation at atmospheric stress, the discharge mode is changed to a glow corona discharge in the pattern discharge because the electric field strength alterations [23]. Yu [24] identified that at 3 kV in needle-plate DBD, streamer discharge is formed within the positive half-cycle. For the unfavorable half-cycle, corona or Trichel pulse discharge is generated. The discharge gap is 0.9 mm, and also the thickness on the dielectric layer is 0.47 mm. The material with the dielectric layer is Al2 O3 . When the voltage is enhanced to six kV, the positive half-cycle of discharge is actually a streamer, and also the adverse half-cycle of discharge is glow discharge. In addition, 3 kinds of DBD devices had been created to examine the effects of different discharge modes. The outcomes showed that streamer and glow discharge create alternately only when the dielectric layer is covered around the ground electrode. For the double dielectric layer structure, there is only streamer discharge. On the other hand, the above investigations were carried out only in small-scale experimental systems, not in ozone reactors. When the electric field strength in the discharge gap is enhanced, nonetheless, negative effects including partial discharge happens at the make contact with surface amongst the dielectric layer along with the electrode. As reviewed above, it is nevertheless challenging to create stable hybrid discharges with high-intensity in ozone reactors. In this paper, a DBD reactor with a layer of silver placed in between the electrode along with the dielectric layer (SL-DBD) was created to improve the electric field strength in the discharge gap with out partial discharge negative effects. The effects on the electric field strength and discharge modes on ozone synthesis were systematically investigated. The stability testing from the reactor was also performed. two. Materials and Techniques 2.1. Experimental Method Figure 1 shows the elements and working principles of the DB.
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