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

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• 作者：Rufan Zhang ; Chong Liu ; Po-Chun Hsu ; Chaofan Zhang ; Nian Liu ; Jinsong Zhang ; Hye Ryoung Lee ; Yingying Lu ; Yongcai Qiu ; Steven Chu ; Yi Cui
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：June 8, 2016
• 年：2016
• 卷：16
• 期：6
• 页码：3642-3649
• 全文大小：696K
• 年卷期：0
• ISSN：1530-6992

文摘

Here, we developed high-efficiency (>99.5%) polyimide-nanofiber air filters for the high temperature PM_2.5 removal. The polyimide nanofibers exhibited high thermal stability, and the PM_2.5 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 PM_2.5 index >300. A field-test showed that they could effectively remove >99.5% PM particles from car exhaust at high temperature.