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Preparation of smart nano-engineered electrospun membranes for methanol gas-phase photoxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
45354 46410 2014 7 PDF Available
Title
Preparation of smart nano-engineered electrospun membranes for methanol gas-phase photoxidation
Abstract

•Photo-catalytic oxidation of methanol in gas phase is studied on three different nanostructured membranes.•Electrospinning (ES) and electrospraying (EHDA) were used alternatively as production techniques.•Inorganic TiO2 nanofibers and nanocomposite membranes showed the same performance.•Multistructured membranes showed a complete degradation of methanol.•The effect of catalyst content is studied.

Nano-engineered membranes obtained by electro-hydrodynamic technologies have been proposed as a good candidate for active filtration. The present work reports some results on the development, production and characterization of three different nanostructured membranes based on: electrospun TiO2 inorganic nanofibers, nanocomposite structures of polymer nanofibers with TiO2 embedded nanoparticles and multilayered structures of polymer nanofibers and electrosprayed TiO2 nanoparticles. Their catalytic activity on volatile organic compounds (VOCs) decomposition has been explored in a photo-reactor properly design for this purpose and a comparison among their performance will be extensively discussed. Multilayered membranes showed a complete degradation of methanol in gas phase and the photo-catalytic activity has been found to be affected from the catalyst content and morphology, by means that there is a critical concentration of catalyst over which its increase results on worse photo-oxidation performance. Inorganic TiO2 based membranes revealed the same activity as the nanocomposite membranes, in terms of methanol reacted per gram of catalyst, but their poor mechanical properties makes them not suitable for a potential scale up.

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Keywords
Multistructured membranes; VOCs removal; Nanofibers; Electro-hydrodynamic technologies
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Preparation of smart nano-engineered electrospun membranes for methanol gas-phase photoxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 144, January 2014, Pages 216–222
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us