Efficiency Evaluation of Organic-Metal Nanostructures in Photodegradation of Ethylbenzene from Air Stream

By using photocatalytic processes, it is possible to reduce volatile organic compounds in the air under special conditions. The aim of this study was to evaluate the efficiency of the photocatalytic process in the presence of organic-metallic nanostructures model Bi2S3@NH2-MIL125(Ti) in reducing ethylbenzene concentration. The concentration of 150-300 ppm and the amount of deposited catalyst (1-3 g/m2) were studied. By increasing the airflow rate contaminated with ethylbenzene, the efficiency of the process decreased from 79% at 0.5 l/min to 41% at the flow rate of 3 l/min. By increasing the amount of catalyst coated on the reactor wall, the efficiency of the process increased from 65% at a dosage of 0.5 g/m2 to 86% at a dosage of 3 g/m2. By increasing the amount of input concentration. Of ethylbenzene, the efficiency of the process decreased from 94% at a concentration of 150 ppm to 55% at a concentration of 300 ppm. The optimal process conditions were determined at a flow rate of 0.5 l/m, the concentration of ethylbenzene, 150 ppm, and the amount of catalyst, 3.0 g/m2. The presence of different light sources including UV A, C, and visible light could reduce the initial concentration of ethylbenzene by.94, 95, and 67% respectively.