Synergetic degradation of VOCs by vacuum ultraviolet photolysis and catalytic ozonation over Mn-xCe/ZSM-5

Nano ferrites (AFe2O4, A = Zn, Co, Mn, Cu) as efficient catalysts for catalytic ozonation of toluene

“…When the O 3 mol dosing ratio reached 7, all concentrations achieved a high degradation rate of nearly 100%. Combined with previously published studies, 11 the catalyst surface was speculated to be the site of O 3 decomposition and catalytic ozonation. Therefore, when the amount of toluene was too large, more O 3 was required to maintain the adsorption equilibrium on the catalysts.…”

“…However, the sole ozone oxidation has limited catalytic degradation capabilities. [10][11][12] Catalytic ozonation process can rapidly decompose O 3 into reactive oxygen species (ROS) with a higher oxidizing ability (e.g., hydroxyl radicals, superoxide radicals, and so on) by the action of a catalyst at ambient temperature and pressure. 13 In addition, catalytic ozonation process also has the advantages of low operating cost, no secondary pollution, and low safety hazards.…”

Catalytic ozonation of ethyl acetate over mesoporous manganese oxides synthesized by a sonochemical method

“…Generally, intermediate products from VOCs conversion easily result in the deactivation of catalysts, which further hinders catalytic ozonation of VOCs. For example, Mn‐3Ce/ZSM‐5 catalyst slowly deactivated during a 180‐min catalytic ozonation of toluene 34 and MnO 2 /Al 2 O 3 catalyst gradually deactivated during a 120‐min catalytic ozonation of benzene 35 . However, the data from Figure 9 demonstrate that the intermediate products from the catalytic ozonation of ethyl acetate hardly affect the activity of the catalyst during the 63‐day experiment.…”

Efficient toluene adsorption/desorption on biochar derived from in situ acid-treated sugarcane bagasse

“…VOCs are typical precursors in the atmospheric chemistry, contributing to the production of ozone, secondary organic aerosols, and greenhouse gases (He et al 2019). In recent decades, various technologies for VOCs removal have been investigated, such as adsorption, membrane separation, catalytic combustion and photocatalytic degradation (Huang et al 2020b, Shu et al 2019, Wang et al 2020c, Wang et al 2021). Among them, adsorption method has been considered as one of the most practical and effective technologies because of its low cost, easy operation and high treatment effects.…”