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Effect of the phase composition and crystal size of sol-gel TiO2 nanoparticles on the NOx photodecomposition

Published online by Cambridge University Press:  05 August 2011

R. Carrera ,
S. Castillo  and
N. Castillo
R. Carrera
Affiliation:
ESIA-IPN, 07738 D.F., México
S. Castillo
Affiliation:
IMP, 07730 D.F., México
N. Castillo
Affiliation:
CINVESTAV, 07738 D.F., México Email: [email protected]
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Abstract

TiO2 nanoparticles with interesting physicochemical properties were synthesized by means of the sol-gel method and acid hydrolysis. The obtained nanoparticles were characterized by the X ray diffraction (XRD), Rietveld refinement, Brunauer Emmett Teller (BET) and transmission electron microscopy (TEM) techniques, and tested in the photodecomposition of NOx. The NOx decomposition degree reached by the sol-gel TiO2 nanoparticles was directly proportional to the brookite mass fraction, but inversely proportional to both the anatase mass fraction and the crystal size.

Keywords

Sol-geltransmission electron microscopy (TEM)X ray diffraction (XRD)crystal
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1275: Structural and Chemical Characterization of Metals, Alloys and Compounds , 2010 , S3-P21
Copyright
Copyright © Materials Research Society 2010

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