Air pollution is becoming more and more serious, which has a huge impact on human production and life. Dust particulate matter (PM) is one of the main pollutants in the air, threatening human life and health. In this work, a triboelectric air filtration system (TAFS) based on triboelectric nanogenerators (TENGs) was developed for active removal of outdoor PM_2.5 and harmful bacteria. The TAFS consists of a layer of industrial filter media (filter cotton or sponge) and a layer of polytetrafluoroethylene (PTFE). Due to frictional electrification effect of these two layers, the filtration efficiency of the low-efficiency and low-resistance filter material for particulate matter is greatly improved. The filtration efficiencies of PM_1.0 and PM_2.5 are increased by 20 %-40 %. Moreover, the frictional positive charge also greatly improves the interception efficiency of the material against Staphylococcus aureus. A self-priming air filtration system composed of an air pump and TENG are used to remove PM_2.5 up to 99 % in a confined space filled with cigarettes for 30 min. In addition, the wind cup design makes the system take full advantage of the wind energy in the environment, realizing self-power supply, zero carbon emission and high efficiency and environmental protection. The self-powered TAFS can be used in outdoor dusty construction sites, dust factories, sand and haze weather and other places to remove particulate pollution. This work also provides a novel self-powered air purification strategy.

空气污染日益严重，对人类生产生活产生巨大影响。粉尘颗粒物（PM）是空气中的主要污染物之一，威胁着人类的生命和健康。在这项工作中，开发了一种基于摩擦电纳米发电机 (TENG) 的摩擦电空气过滤系统 (TAFS)，用于主动去除室外 PM _2.5和有害细菌。TAFS 由一层工业过滤介质（过滤棉或海绵）和一层聚四氟乙烯 (PTFE) 组成。由于这两层的摩擦起电作用，大大提高了低效低阻滤料对颗粒物的过滤效率。_{PM 1.0}和 PM _2.5的过滤效率增加 20 %-40 %。而且，摩擦正电荷也大大提高了材料对金黄色葡萄球菌的截留效率。由气泵和TENG组成的自吸式空气过滤系统用于在装满香烟的密闭空间中去除高达99%的PM _{2.5 30分钟。}此外，风杯设计使系统充分利用环境中的风能，实现自供电、零碳排放和高效环保。自供电TAFS可用于室外多尘工地、粉尘厂、沙雾天气等场所去除颗粒物污染。这项工作还提供了一种新颖的自供电空气净化策略。