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

作　　者：Guang Qin Gu Chang Bao Han Jing Jing Tian Tao Jiang Chuan He Cun Xin Lu Yu Bai Jin Hui Nie Zhou Li Zhong Lin Wang 

机构地区：[1]Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China [2]School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China [3]School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA [4]Guang Oin Gu, Chang Bao Han, and Jing Jing Tian contributed equally to this work.

出　　处：《Nano Research》2018年第8期4090-4101,共12页纳米研究（英文版）

摘　　要：We developed a high-efficiency rotating triboelectric nanogenerator （R-TENG）- enhanced multi.layered antibacterial polyimide （PI） nanofiber air filters for removing ultrafine particulate matter （PM） from ambient atmosphere. Compared to single- layered PI nanofiber filters, the multilayered nanofiber filter can completely remove all of the particles with diameters larger than 0.54 ffm and shows enhanced removal efficiency for smaller PM particles. After connecting with a R-TENG, the removal efficiency of the filer for ultrafine partides 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.We developed a high-efficiency rotating triboelectric nanogenerator （R-TENG）- enhanced multi.layered antibacterial polyimide （PI） nanofiber air filters for removing ultrafine particulate matter （PM） from ambient atmosphere. Compared to single- layered PI nanofiber filters, the multilayered nanofiber filter can completely remove all of the particles with diameters larger than 0.54 ffm and shows enhanced removal efficiency for smaller PM particles. After connecting with a R-TENG, the removal efficiency of the filer for ultrafine partides 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.

关 键 词：triboelectricnanogenerator antibacterial property electrospinnin Ag-polyimide nanofiber air filter ultrafine particle 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论] TU834.83[自动化与计算机技术—计算机科学与技术]