TiO2 Macroscopic Fibers with Enhanced Photocatalytic Properties Obtained through a Scale‐Up Semi‐Industrial Process. Issue 1 (16th October 2014)

• Record Type: Journal Article
• Authors: Kinadjian, Natacha; Le Bechec, Mickaël; Henrist, Catherine; Prouzet, Eric; Poulin, Philippe; Neri, Wilfrid; Lacombe, Sylvie; Backov, Rénal
• Is Part Of: Advanced engineering materials. Volume 17:Issue 1(2015:Jan.)
• Page Start: 36
• Page End: 44
• Publication Date: 2014-10-16
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201400327
• Languages: English
• ISSNs: 1438-1656

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="adem201400327-sec-0001" sec-type="section"> <p>We describe the generation and properties of TiO₂‐based macroscopic fibers designed for the photodecomposition of volatile organic compounds (VOC). We made use of a continuous industrially scalable extrusion process employing hybrid sols of amorphous titania nanoparticles, polyvinyl alcohol (PVA), and optionally latex nanoparticles. This process allowed for the continuous generation of hybrid TiO₂/latex/PVA or TiO₂/PVA macroscopic fibers. Upon thermal treatment in air, we obtained biphasic porous fibers containing the anatase phase of TiO₂ with 10–15% of brookite. These fibers, which can be manufactured as several hundred meters of length reels, provide significantly improved phototocatalytic efficiency compared to our previous work. Their efficiency is now comparable to the commercial Quartzel®PCO photocatalyst for gas‐phase acetone mineralization.</p> </sec> </abstract>