Enhanced oxidation of naphthalene using plasma activation of TiO 2 /diatomite catalyst

摘要: Non-thermal plasma technology has great potential in reducing polycyclic aromatic hydrocarbons (PAHs) emission. But plasma-alone process, various undesired by-products are produced, which causes secondary pollutions. Here, a dielectric barrier discharge (DBD) reactor been developed for the oxidation of naphthalene over TiO2/diatomite catalyst at low temperature. In comparison to combination and significantly enhanced conversion (up 40%) COx selectivity 92%), substantially reduced formation aerosol 90%) volatile organic compounds near 100%). The mechanistic study suggested that presence intensified electron energy DBD. Meantime, energized electrons generated activated TiO2, while ozone activity catalyst. This plasma-catalyst interaction led synergetic effect resulting from catalyst, consequently naphthalene. Importantly, we have demonstrated effectiveness activate photocatalyst deep PAH without external heating, is potentially valuable development cost-effective gas cleaning process removal PAHs vehicle applications during cold start conditions.