Kim Young-Jun, Kim Hyoung Taek, Lee Jeong Hwan, Suh In-Yong, Kim Sang-Woo
School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
SKKU Advanced Institute of Nanotechnology (SAINT), SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
Nanoscale Res Lett. 2022 Dec 23;17(1):128. doi: 10.1186/s11671-022-03749-6.
Particulate matter (PM) in the environment can adversely affect the health of living things. However, high removal efficiency and low-pressure loss are crucial design challenges for any air filtration system. To circumvent the challenge, here, we demonstrate a novel triboelectric (TE) air filtration system that is based on a rotation-type triboelectric nanogenerator (TENG) and a filter comprising two sets of plates: primary and secondary, that are placed in the airflow channel. When the TENG charges the two plate sets with opposite charges, the flowing air particles are charged at the primary plates and are collected, due to an electric field, at the secondary plates. The TE filter has demonstrated a PM removal efficiency of ~ 99.97% for the fine dust particles, and it remains stable even after several washing cycles. The pressure loss is almost two orders less than the high-efficiency particulate air filter. Since the airflow itself can drive the TENG, the TE filter can potentially be integrated with any air conditioning system for fine dust filtration in offices, automobiles, etc.
环境中的颗粒物（PM）会对生物健康产生不利影响。然而，对于任何空气过滤系统而言，高去除效率和低压力损失都是至关重要的设计挑战。为了应对这一挑战，在此我们展示了一种新型摩擦电（TE）空气过滤系统，该系统基于旋转式摩擦纳米发电机（TENG）以及一个过滤器，该过滤器由两组放置在气流通道中的板组成：初级板和次级板。当TENG给两组板带上相反电荷时，流动的空气颗粒在初级板上带电，并由于电场作用在次级板上被收集。这种TE过滤器对细粉尘颗粒的PM去除效率已证明约为99.97%，并且即使经过多次洗涤循环仍保持稳定。其压力损失比高效空气过滤器几乎低两个数量级。由于气流本身就能驱动TENG，因此这种TE过滤器有可能与任何空调系统集成，用于办公室、汽车等场所的细粉尘过滤。
