Synthesis and Characterization of Photocatalytic <mml:math id="E1" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>TiO</mml:mtext></mml:mrow><mml:mtext>2</mml:mtext></mml:msub><mml:msub><mml:mrow><mml:mtext>-ZnFe</mml:mtext></mml:mrow><mml:mtext>2</mml:mtext></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mtext>4</mml:mtext></mml:msub></mml:mrow></mml:math> Nanoparticles

Srinivasan, Sesha S.; Wade, Jeremy; Stefanakos, Elias K.

doi:https://doi.org/10.1155/JNM/2006/45712

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Nanoporous and Nanostructured Materials for Catalysis, Sensor, and Gas Separation Applications

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Volume 2006 | Article ID 045712 | https://doi.org/10.1155/JNM/2006/45712

Synthesis and Characterization of Photocatalytic TiO2-ZnFe2O4 Nanoparticles

Sesha S. Srinivasan,¹Jeremy Wade,¹and Elias K. Stefanakos¹

Received20 Jan 2006

Revised29 Jun 2006

Accepted13 Jul 2006

Published20 Sept 2006

Abstract

A new coprecipitation/hydrolysis synthesis route is used to create a TiO2-ZnFe2O4 nanocomposite that is directed towards extending the photoresponse of TiO2 from UV to visible wavelengths (>400 nm). The effect of TiO2's accelerated anatase-rutile phase transformation due to the presence of the coupled ZnFe2O4 narrow-bandgap semiconductor is evaluated. The transformation's dependence on pH, calcinations temperature, particle size, and ZnFe2O4 concentration has been analyzed using XRD, SEM, and UV-visible spectrometry. The requirements for retaining the highly photoactive anatase phase present in a ZnFe2O4 nanocomposite are outlined. The visible-light-activated photocatalytic activity of the TiO2-ZnFe2O4 nanocomposites has been compared to an Aldrich TiO2 reference catalyst, using a solar-simulated photoreactor for the degradation of phenol.

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Copyright

Copyright © 2006 Sesha S. Srinivasan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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