▎ 摘　　要

A simple and fast method based on bismuth oxide nanoparticles coupled to heterogeneous graphene/ graphene oxide (BONPs-NG/NGO) was used for the rapid removal of xylene vapor from environmental air by UV photocatalectic degradation-adsorption procedure (UV-PCDA). By dynamic system, the xylene vapor in pure air was generated in the chamber and flowed to BONPs-NG/NGO sorbent inside in quartz glass tube with UV lamp radiation (QGT-UV) at optimized conditions. In the present of BONPs and UV irradiation, xylene and intermediates (o-xylene, p-xylene, m-xylene) were semi degradated to main fragments by radicals and adsorbed on the surface of NG/NGO (200 mg). After degradation, the main fragments of xylene determined with gas chromatography (GC-MS). Based on the results, the removal efficiency of xylene based on BONPs and BONPs-NG/NGO were obtained 38.8 % and 98.7 %, respectively. By static system in presence of UV irradiation, the capacity adsorption of xylene with 200 mg of BONPs-NG/NGO and NG/NGO was obtained 223 mg g(-1) and 134.6 mg g(-1) in 85 degrees C for 10 min, respectively. The validation of methodology was obtained by spiking of different concentrations of standard xylene in pure air.