Doped and undoped anatase-based plates obtained from paper templates for photocatalytic oxidation of NOX
authors Silvestri, S; Szpoganicz, B; Schultz, J; Mangrich, AS; Hotza, D; Garcia, DE; Labrincha, JA
nationality International
journal CERAMICS INTERNATIONAL
author keywords Titanium dioxide; NOx; Photocatalysis; Biotemplate
keywords TIO2 PHOTOCATALYSIS; TITANIUM-DIOXIDE; NITROGEN-OXIDES; DEGRADATION; CERAMICS; TRANSFORMATION; NANOPARTICLES; EPR
abstract Titanium dioxide is frequently used for the photocatalytic degradation of organic and inorganic pollutants present in the air, such as NOx. In this work, biomorphic anatase-based plates were manufactured using paper as an innovative template for fixation of TiO2. Ceramics with microstructure similar to paper were produced by infiltration of titanium isopropoxide (TTiP) and dopants, followed by hydrolysis in NH4OH, air drying, and calcination at temperatures up to 1000 degrees C. After heat treatment, the samples were characterized by XRD, TG/DTA, BET, EPR, and SEM. Anatase was obtained as the major phase at 800 degrees C and remained present up to 1000 degrees C. In tests of photocatalytic efficiency of produced plates for degradation of NOx gases, the best performance was obtained with a biomorphic anatase-based plate prepared using TTiP doped with 5% Zr4+, corresponding to 100% degradation of NOx in 35 min. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0272-8842
year published 2016
volume 42
issue 10
beginning page 12074
ending page 12083
digital object identifier (doi) 10.1016/j.ceramint.2016.04.137
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000377733500071
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