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Facile co-sintering process to fabricate sustainable antifouling silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes for protein separation

Zou, Dong; Drioli, Enrico; Chen, Xianfu; Ke, Xuebin; Qiu, Minghui; Fan, Yiqun

Authors

Dong Zou

Enrico Drioli

Xianfu Chen

Minghui Qiu

Yiqun Fan



Abstract

Protein separation in medical care applications using tight ceramic ultrafiltration (UF) membranes with multilayer asymmetric structures is hindered by challenges in their fabrication and fouling phenomenon. In this study, a facile co-sintering method for fabrication of silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes was comprehensively investigated. The introduction of AgNPs into the membrane layer not only controlled the membrane surface charge properties, but also alleviated the sintering stress in the co-sintering process, ensuring a complete membrane layer owing to the higher ductility. The AgNPs obtained from silver nitrate were introduced before the formation of boehmite nucleation, providing a uniform distribution of AgNPs within boehmite owing to the electric double layer. The final UF membranes prepared by the co-sintering process exhibited a molecular weight cut-off of 9000 Da and permeability of 62 Lm-2h-1bar-1. Furthermore, the isoelectric point of the membrane surface could be controlled by the AgNPs (from 9.0 to 2.7 unit?), providing sustainable antifouling properties for protein purification owing to the electrostatic repulsion force. The proposed facile co-sintering process for fabrication of antifouling ceramic UF membranes with the assistance of AgNPs could decrease the sintering time and energy consumption, and thus is promising for industrial protein purification applications.

Journal Article Type Article
Publication Date 2020-01
Journal Journal of Membrane Science
Print ISSN 0376-7388
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 593
Pages 117402
APA6 Citation Zou, D., Drioli, E., Chen, X., Ke, X., Qiu, M., & Fan, Y. (2020). Facile co-sintering process to fabricate sustainable antifouling silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes for protein separation. Journal of membrane science, 593, 117402. https://doi.org/10.1016/j.memsci.2019.117402
DOI https://doi.org/10.1016/j.memsci.2019.117402
Keywords Physical and Theoretical Chemistry; Filtration and Separation; General Materials Science; Biochemistry
Additional Information This article is maintained by: Elsevier; Article Title: Facile co-sintering process to fabricate sustainable antifouling silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes for protein separation; Journal Title: Journal of Membrane Science; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.memsci.2019.117402; Content Type: article; Copyright: © 2019 Elsevier B.V. All rights reserved.
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