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Sol-Gel Synthesis of Nanostructured TiO2 Films for Water Purification

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Sol-Gel Methods for Materials Processing

Abstract

Sol gel method is an important technology for the synthesis of TiO2 films for water treatment. In this chapter, we will discuss the critical issues on the sol gel synthesis of TiO2 films with high photocatalytic activity and good long-term mechanical stability. The aspects will mainly include the following: (1) design of film structure for increasing the number of electron-hole pairs generated and number of hydroxyl radicals produced, (2) tailor-design of the film pore structure for increasing adsorption of treated contaminants and enhancing mass transfer between the contaminants and catalyst active sites, and (3) improvements in the long-term mechanical stability of the TiO2 films by achieving good adhesion of immobilized TiO2 films on the support (substrate). Important achievements of our research works related to sol gel synthesis of TiO2 films and membranes and the application of these TiO2 photocatalysts in promising photocatalytic reactors are summarized. Current challenges and future directions on the sol gel synthesis of TiO2 films for water purification are also discussed.

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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, University of Cincinnati, 765 Baldwin Hall, Cincinnati, OH, 45221-0071, USA

    Yongjun Chen & Dionysios D. Dionysiou

Authors
  1. Yongjun Chen
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  2. Dionysios D. Dionysiou
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Correspondence to Dionysios D. Dionysiou .

Editor information

Editors and Affiliations

  1. University of Sassari, Italy

    Plinio Innocenzi

  2. Ukraine Academy of Sciences, Kiev, Ukraine

    Yuriy L. Zub

  3. Swedish Life Science University (SLU), Uppsala, Sweden

    Vadim G. Kessler

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Chen, Y., Dionysiou, D.D. (2008). Sol-Gel Synthesis of Nanostructured TiO2 Films for Water Purification. In: Innocenzi, P., Zub, Y.L., Kessler, V.G. (eds) Sol-Gel Methods for Materials Processing. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8514-7_4

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