Preparation of Nano Crystalline Titanium Dioxide by Microwave Hydrothermal Method

Abstract:

Titanium dioxide (TiO₂) nanoparticles due to their exclusive physical, chemical and electrical properties are widely used as a heterogeneous catalyst and catalytic support in the chemical reactions, a semiconductor for photocatalysis reactions and additives in the membrane processes. The TiO₂ nanoparticles are also utilized in solar cells, gas sensors, pigments and etc. Efficiency of these nanoparticles in various applications is dramatically dependent on their size. Various techniques such as combustion flame synthesis and conventional hydrothermal methods have been used to prepare TiO₂ nanoparticles, but few synthesis techniques can reproducibly produce particles below 10 nm. In this study, the TiO₂ nanoparticles in rutile phase were synthesized by microwave assisted hydrothermal method by controlling the crystallization time and temperature. Titanium tetrachloride (TiCl₄) was used as a titanium precursor. The synthesized nanoparticles were characterized by X-ray powder diffraction (XRD) and Scanning Electron Microscope (SEM) analysis. The XRD pattern showed that the rutile phase of the TiO₂ nanoparticles was successfully synthesized by the proposed method with the average crystal size of 4nm. Finally, the prepared Titanium dioxide (TiO₂) nanoparticles were as a hydrophobic additive in the polymeric ultrafiltration membranes in order to reduce the membrane fouling.

• Periodical: Advanced Materials Research (Volume 829)
• Pages: 846-850
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.829.846
• Online since: November 2013
• Authors: Vahid Moghimifar, Ahmadreza Raisi, Abdolreza Aroujalian, Niloofar Bayani Bandpey*
• Keywords: Membrane Fouling, Microwave Heating, Polyethersulfone (PES) Membrane, Rutile Phase, TiO₂ Nanoparticles

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