AEL Zeolite Nanosheet-Polyamide Nanocomposite Membranes on α-Alumina Hollow Fibers with Enhanced Pervaporation Properties

• DOI: 10.1021/acs.iecr.0c02327
• Publication Date: 2020-07-24T08:05:35Z
• Authors: Akshay Korde; Byunghyun Min; Arvind Ganesan; Shaowei Yang; Zhongzhen Wang; Aristotle Grosz; Christopher W. Jones; Sankar Nair
• Keywords: Nanosheet; Interfacial polymerization; Pervaporation; Permeance; In situ polymerization; Thin-film composite membrane

Polyamide (PA)-based nanofiltration membranes fabricated via interfacial polymerization (IP) are widely studied for water desalination. The formation of hybrid (nanocomposite) comprising PA along with nanoporous materials has the potential to increase flux while maintaining salt rejections low energy input. We report a new type nanocomposite membrane high-aspect-ratio AEL molecular sieve nanosheet coating and PA, on α-alumina hollow fibers. find that acts as semipermeable reservoir store diamine molecules thus control form thin, continuous AEL/PA ceramic fiber surfaces. ∼400 nm thick exhibit high permeance NaCl rejection in pervaporative desalination at (2 g/L NaCl) (36 concentrations representative brackish seawater, respectively. stable over longer-term operation 150 h This work suggests strategy developing PA-based thin-film treatment by utilizing microporous zeolite nanosheets. preparation these fibers is also useful their scalable fabrication.