Nest-like multilevel structured graphene oxide-on-polyacrylonitrile membranes for highly efficient filtration of ultrafine particles

Jing Li; Danzhen Zhang; Xin Jiang; Xuanliang Zhao; Ruirui Hu; Yujia Zhong; Hongwei Zhu

Journal of Materiomics (Sep 2019)

Nest-like multilevel structured graphene oxide-on-polyacrylonitrile membranes for highly efficient filtration of ultrafine particles

Jing Li,
Danzhen Zhang,
Xin Jiang,
Xuanliang Zhao,
Ruirui Hu,
Yujia Zhong,
Hongwei Zhu

Affiliations

Jing Li: State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Danzhen Zhang: State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Xin Jiang: State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Xuanliang Zhao: State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Ruirui Hu: State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Yujia Zhong: State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Hongwei Zhu: Corresponding author.; State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

Journal volume & issue: Vol. 5, no. 3
pp. 422 – 427

Abstract

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Developing filtration media for particulate matter (PM) removal has been proven to be extremely challenging. Here, we report a facile and scalable strategy to fabricate a multi-level structured polyacrylonitrile/graphene oxide (PAN/GO) air filtration membrane to remove ultrafine particles in air by combining multi-jet electrospinning and physical bonding. Our approach allows the thin PAN nanofibers and two-dimensional GO nanosheets to form interpenetrating bonding structures on non-woven fabric and to assemble into stable filtration media. The resultant composite membranes can filtrate 300 nm particles with a high removal efficiency of 98.8%, a low pressure drop of 55 Pa, and a desirable quality factor of 0.34 Pa-1. This multi-level PAN/GO filter is expected to have wider applications not only for the ultrafine particle filtration and separation but also for the design of three-dimensional functional structures in the future. Keywords: Graphene oxide, Polyacrylonitrile, Electrospinning, Ultrafine particles

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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