rGO doped S0.05N0.1/TiO2 accelerated visible light driven photocatalytic degradation of dimethyl sulfide and dimethyl disulfide

Treatment of Mixture Pollutants with Combined Plasma Photocatalysis in Continuous Tubular Reactors with Atmospheric-Pressure Environment: Understanding Synergetic Effect Sources

“…•− , O • , HO • ), leading to the increased catalytic activity of the photocatalyst (in our case, TiO 2 coated on Glass Fiber Tissue) and improved photocatalytic degradation [6,[21][22][23][24][25][26][27]. For DMDS, the degradation rate during the combined application of photocatalysis and plasma (53%) surpasses the rates achieved with plasma or photocatalysis alone (45.4%).…”

“…Ozone formation, a strong oxidizing by-product, occurs during the operation of the DBD-plasma/photocatalytic reactor. Extensive experiments on oxidation under (i) a DBDplasma reactor or (ii) coupling plasma/photocatalysis technology have been conducted and detailed in our previous research studies [1,4,6,7,9,[23][24][25][26][27]. These studies have shown that increasing the energy of plasma leads to generating a significant amount of ozone in the exhaust.…”

“…A slight decrease in ozone concentration was observed (Figure 7) with values of 36 and 32 ppm for (i) plasma alone and (ii) plasma/photocatalysis, respectively. This decrease can be attributed to the decomposition of ozone through reactions ( 3), (4), and ( 5), facilitated by the photo-generated radicals (H°, HO°) [26]. It is important to note that adding external UV light to the DBD-plasma system (coupling plasma with UV lamp ON) can play a crucial role in promoting ozone degradation into highly reactive species (O2°− and HO2°), thereby significantly enhancing the oxidation step.…”