Details

Autor(en) / Beteiligte

• Al-Attabi, Riyadh
• Rodriguez-Andres, Julio
• Schütz, Jürg A.
• Bechelany, Mikhael
• des Ligneris, Elise
• Chen, Xiao
• Kong, Lingxue
• Morsi, Yosry S.
• Dumée, Ludovic F.

Titel

Catalytic electrospun nano-composite membranes for virus capture and remediation

Ist Teil von

• Separation and purification technology, 2019-12, Vol.229, p.115806, Article 115806

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Electrospun membranes with outstanding virus retention capability.•Tuneable reactivity for catalytic degradation.•Very high flux due to the tuneable pore size range.•Potential for self-cleaning membranes. Viruses spread in the environment through solution and as aerosols, generating great risks of infection for exposed populations. Virus versatile chemistries and behaviours thus require remediation solutions encompassing both nanoscale controlled surface topography and chemical functionalities. Here, nano-composite electrospun nanofiber membranes were electrospun from tetraethoxysilane and ammonium tetrathiomolybdate mixed blended with poly(acrylonitrile) to produce defect-free and highly interconnected porous structure. The capture efficiency of the nano-composite electrospun based membranes for the Semliki Forest virus in solution was found to be largely related to the tuned fiber surface morphology and roughness as well as to the surface energy of the materials. The mechanically flexible and robust composite microfiltration membranes, with pore size distributions in the range of 0.8 to 3.1 µm and specific surface areas on the order of 45.6 m2/g, exhibited virus removal efficiencies in single pass up to 98.9% and yet very high water permeation up to 26,000 L.m−2.h−1.bar−1. The hybrid membranes also yielded excellent photocatalytic performance thus allowing for continuous flow operation as continuous membrane reactors. These ultra-thin membranes, facile to mass-produce, offer opportunities to provide cost-effective water remediation strategies for low-energy requirement separation systems for the simultaneous capture and degradation of pathogens, and to self-cleaning materials.