Highly selective laser-induced graphene (LIG)/polysulfone composite membrane for hydrogen purification. (March 2021)

• Record Type: Journal Article
• Authors: Mishra, Naveen K.; Patil, Nutan; Anas, Muhammad; Zhao, Xiaofei; Wilhite, Benjamin A.; Green, Micah J.
• Is Part Of: Applied materials today. Volume 22(2021)
• Publication Date: 2021-03
• Subjects: Laser-Induced Graphene -- Gas separation -- Membranes; Materials science -- Periodicals; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1016/j.apmt.2021.100971
• Languages: English
• ISSNs: 2352-9407

Abstract

Abstract: This manuscript reports for the first-time the application of Laser-Induced Graphene (LIG) fabricated on polysulfone as a highly permselective asymmetric membrane for separation of hydrogen and carbon dioxide. Prior work has shown that LIG can be photothermally formed on the surface of a polymeric substrate; this method is rapid and scalable and has previously been applied for aqueous ultrafiltration membranes on polysulfone, polyethersulfone, and polyphenylsulfone substrates. LIG/polysulfone gas separation membranes combine the molecular sieving mechanism of LIG with the solution-diffusion mechanism of polysulfone while enhancing both H2 :CO2 selectivity and H2 permeance. These membranes achieved an H2 :CO2 selectivity of 30.5 ± 1.4 and H2 permeance of 176.4 ± 19.5 GPU (1 GPU = 3.35 × 10 −10 mol m −2 s −1 Pa −1 ). This rapid surface modification of conventional polysulfone membranes with a LIG layer has a potential industrial application for high throughput hydrogen separation. Graphical abstract: Image, graphical abstract