Multifunctional composite membrane based on BaTiO3@PU/PSA nanofibers for high-efficiency PM2.5 removal

Xue Yang; Yi Pu; Yifei Zhang; Xiaofang Liu; Jianxin Li; Ding Yuan; Xin Ning

doi:10.1016/j.jhazmat.2020.122254

Multifunctional composite membrane based on BaTiO₃@PU/PSA nanofibers for high-efficiency PM2.5 removal

J Hazard Mater. 2020 Jun 5:391:122254. doi: 10.1016/j.jhazmat.2020.122254. Epub 2020 Feb 7.

Authors

Xue Yang¹, Yi Pu¹, Yifei Zhang¹, Xiaofang Liu¹, Jianxin Li¹, Ding Yuan², Xin Ning¹

Affiliations

¹ Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China.
² Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China. Electronic address: yuanding@qdu.edu.cn.

PMID: 32062542
DOI: 10.1016/j.jhazmat.2020.122254

Abstract

In this study, a new barium titanate@polyurethane/polysulfonamide (BaTiO₃@PU/PSA) composite nanofibrous membrane with comprehensive properties for high temperature filtration and robust PM2.5 removal was successfully fabricated through the blending spinning of PU and PSA and the introduction of BaTiO₃. As a consequence, the BaTiO₃@PU/PSA membrane achieved the high capture efficiency of 99.99 % for fine particulates, low pressure drop of 39.4 ± 0.2 Pa, good mechanical property (13.27 MPa), sufficient flexibility, high thermal stability (up to 300 °C), favorable flame-retardancy as well as superior chemical resistance against acid and alkali. Especially, to intuitively reveal the relationship between the fiber structure, high temperature environment, gas velocity and filtration performance of the composite membrane, the filtration processes were carefully investigated through the analog simulation. More importantly, the BaTiO₃@PU/PSA membrane exhibited high-efficiency PM2.5 purification capacity, and the removal efficiency kept stable after high temperature, acid or alkali treatment, ascribing to the advantageous structure of PSA, PU and BaTiO₃. Overall, the BaTiO₃@PU/PSA nanofiber membranes with versatility are a promising high-efficiency candidate for dust removal, particularly in harsh conditions.

Keywords: Air filtration; Composite nanofiber; Electrospinning; High temperature filtration; PM2.5.

Publication types

Research Support, Non-U.S. Gov't