Tuning of nanoporous silica by electrospinning and sol-gel methods for efficient beryllium uptake

Ordered meso-porous silica nanomaterials (MCM-41) were prepared by the sol-gel method. Brunauer-Emmett-Teller (BET) analysis shows a surface area of about 1600 m 2 /g and a wide meso-pores distribution. Silica nanofibers (SNF) were prepared by electrospinning of a mixture of silica precursor and an...

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Bibliographic Details
Published in:Separation science and technology 2020-01, Vol.55 (1), p.35-46
Main Authors: Elsherief, Mohamed A., Morsi, Rania E., Shabaan, M., Salem, Hend, Abdel Dayeem, Samia, Elsabee, M. Z.
Format: Article
Language:English
Subjects:
Alcohols
Beryllium
beryllium uptake
Electrospinning
Gels
Nanofibers
Nanomaterials
Nanotechnology
Ordered meso-porous silica
Polymers
Polyvinyl alcohol
Silica
silica micro-porous nanofibers
Silicon dioxide
Sol-gel processes
Surface area
Uptake
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Summary:Ordered meso-porous silica nanomaterials (MCM-41) were prepared by the sol-gel method. Brunauer-Emmett-Teller (BET) analysis shows a surface area of about 1600 m 2 /g and a wide meso-pores distribution. Silica nanofibers (SNF) were prepared by electrospinning of a mixture of silica precursor and an easily electrospinnable polymer; polyvinyl alcohol. SNF were found to have an ordered micro-porous surface with surface area of 425 m 2 /g with average pore radius of 1.99 nm. Beryllium uptake capacities of MCM-41 and SNF were studied under different conditions. The uptake efficiency of SNF was superior to that of MCM-41; the maximum achieved efficiency was 45.8% and 92.7% for MCM-41 and SNF, respectively.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2018.1563159