title: Palladium-Zeolite nanofiber as an effective recyclable catalyst membrane for water treatment.
abstract: Zeolite is an exciting natural material due to its unique capability of ammonium nitrogen (NH3N) adsorption in water. In this study, multifunctional hybrid composites of zeolite/palladium (Ze/Pd) on polymer nanofiber membranes were fabricated and explored for sustainable contaminant removal. SEM and XRD demonstrated that zeolite and palladium nanoparticles were uniformly distributed and deposited on the nanofibers. NH3N recovery rate was increased from 23 to 92% when palladium coated zeolite was embedded on the nanofiber. Multifunctional nanofibers of Ze/Pd membranes were able to adsorb NH3N on the zeolites placed on the surface of fibers and palladium catalysts were capable of selective oxidation of NH3N to N2 gas. The cycling of NH3N adsorption-oxidation, high flux, hydrophilicity, and flexibility of the membrane makes it a strong candidate for water treatment.
authors.affiliation: Department of Materials Engineering, University of British Columbia, Vancouver, V6T1Z4, Canada. Electronic address: jungsu@mail.ubc.ca.
authors.forename: Jungsu
authors.initials: J
authors.lastname: Choi
authors.affiliation: Department of Materials Engineering, University of British Columbia, Vancouver, V6T1Z4, Canada. Electronic address: s.chan@alumni.ubc.ca.
authors.forename: Sophia
authors.initials: S
authors.lastname: Chan
authors.affiliation: Department of Materials Engineering, University of British Columbia, Vancouver, V6T1Z4, Canada. Electronic address: garriott.yip@alumni.ubc.ca.
authors.forename: Garriott
authors.initials: G
authors.lastname: Yip
authors.affiliation: Department of Environmental Energy Engineering, Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do, 442-760, South Korea. Electronic address: hjjoo@kgu.ac.kr.
authors.forename: Hyunjong
authors.initials: H
authors.lastname: Joo
authors.affiliation: Department of Materials Engineering, University of British Columbia, Vancouver, V6T1Z4, Canada. Electronic address: heejae.yang@ubc.ca.
authors.forename: Heejae
authors.initials: H
authors.lastname: Yang
authors.affiliation: Department of Materials Engineering, University of British Columbia, Vancouver, V6T1Z4, Canada. Electronic address: frank.ko@ubc.ca.
authors.forename: Frank K
authors.initials: FK
authors.lastname: Ko
mesh_terms: D000327:Adsorption; D002384:Catalysis; D057139:Nanofibers; D010165:Palladium; D018508:Water Purification; D017641:Zeolites
chemical_list: D017641:Zeolites; D010165:Palladium
keywords: Ammonia adsorption; Nanofiber membrane; Oxidation; Palladium; Sustainable; Zeolite