挥发性有机物(VOCs)是大气污染物的重要来源，也是形成PM2.5的重要前体物，严重影响空气质量和危害人体健康。低温等离子体(NTP)是一种极具应用前景的VOCs净化技术，然而，NTP技术存在能源利用率低、产物COx选择性差及产生臭氧二次污染等应用瓶颈问题。本项目以典型VOCs对二甲苯(PX)为目标物，在NTP放电区域内填充掺杂La-BiOBr和MnOx的有序多孔生物质泡沫炭(BCF)，通过吸附+双催化体系协同增效NTP对PX的净化，系统开展相关基础研究和关键科学问题探讨：(1)关键因子对可控制备La-BiOBr-MnOx/BCF的理化性质和吸附/催化活性的影响；(2)协同体系下技术参数的优化及对PX去除效果的对比研究；(3)PX的降解机理及体系的增效作用机制；(4)功能材料的失活、稳定性及重复性。本项目的顺利完成将为有效解决NTP应用瓶颈问题和工业VOCs高效净化提供理论依据和技术参考。

Volatile Organic Compounds (VOCs) are considered as the main factors causing air pollution, and they are also the precursor of PM2.5 generated. VOCs had significant negative effect on the air quality and human health. Non-thermal plasma(NTP) is a promising technology applied in the field of air pollutants purification. However, the low energy utilization efficiency, bad product selectivity and a large number of byproducts generated including ozone are the main drawbacks of NTP technology. In this project, Para-Xylene (PX) is selected as the representative of VOCs, and ordered macroporous biomass carbon foam (BCF) doped with La-BiOBr and MnOx will be filled in the discharge area of NTP to improve the degradation efficiency of PX by the combination of adsorption and double catalytic system. The basic research and discussion on scientific problems on synergistic effect for purification of PX will be carried out as follow: (1) La-BiOBr-MnOx/BCF will be controllably prepared from waste biomass, and then the influence of key factors on the physical and chemical properties such as microscopic pore structure, adsorption and catalytic activity of BCF doped with La-BiOBr-MnOx need to be demonstrated. (2) study on the optimization of technical parameters and the comparison of PX removal efficiency in the synergistic system; (3) study on the degradation mechanism of PX and synergistic mechanism of the system; (4) evaluation of inactivation, stability and reproducibility of the functional materials. The successful completion of this project will effectively solve the application bottleneck problem of NTP, and provide theoretical basis and technical reference for high-efficient purification of industrial waste gas containing VOCs.