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Nano Research

Article Title

Triboelectric nanogenerator enhanced multilayered antibacterial nanofiber air filters for efficient removal of ultrafine particulate matter

Authors

Guang Qin Gu, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Chang Bao Han, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Jing Jing Tian, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Tao Jiang, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Chuan He, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Cun Xin Lu, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Yu Bai, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Jin Hui Nie, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Zhou Li, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Zhong Lin Wang, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA

Keywords

triboelectric nanogenerator, antibacterial property, electrospinning, Ag-polyimide nanofiber, air filter, ultrafine particle

Abstract

ABSTRACT We developed a high-efficiency rotating triboelectric nanogenerator (R-TENG)- enhanced multilayered antibacterial polyimide (PI) nanofiber air filters for removing ultrafine particulate matter (PM) from ambient atmosphere. Compared to singlelayered PI nanofiber filters, the multilayered nanofiber filter can completely remove all of the particles with diameters larger than 0.54 µm and shows enhanced removal efficiency for smaller PM particles. After connecting with a R-TENG, the removal efficiency of the filer for ultrafine particles is further enhanced. The highest removal efficiency for ultrafine particulate matter is 94.1% at the diameter of 53.3 nm and the average removal efficiency reached 89.9%. Despite an increase in the layer number, the thickness of each individual layer of the film decreased, and hence, the total pressure drop of the filter decreased instead of increasing. Moreover, the nanofiber film exhibited high antibacterial activity because of the addition of a small amount of silver nanoparticles. This technology with zero ozone release and low pressure drop is appropriate for cleaning air, haze treatment, and bacterial control.

Graphical Abstract

Publisher

Tsinghua University Press

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