Nanofiber Air Filters with High-Temperature Stability for Efficient PM2.5 Removal from the Pollution Sources

作者：Rufan Zhang, Chong Liu, Po‐Chun Hsu, Chaofan Zhang, Nian Liu, Jinsong Zhang, Hye Ryoung Lee, Yingying Lü, Yongcai Qiu, Steven Chu, Yi Cui · 发表于：Nano Letters · 年份：2016 · DOI：10.1021/acs.nanolett.6b00771 · 被引用次数：541 · 研究领域：Air Quality and Health Impacts、Aerosol Filtration and Electrostatic Precipitation、Vehicle emissions and performance

Here, we developed high-efficiency (>99.5%) polyimide-nanofiber air filters for the high temperature PM2.5 removal. The polyimide nanofibers exhibited high thermal stability, and the PM2.5 removal efficiency was kept unchanged when temperature ranged from 25-370 °C. These filters had high air flux with very low pressure drop. They could continuously work for >120 h for PM2.5 index >300. A field-test showed that they could effectively remove >99.5% PM particles from car exhaust at high temperature.