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Novel Synthesis of 4nm Anatase Nanoparticles at Room Temperature Obtained from TiO2 Nanotube Structures by Anodizing Ti
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Author(s): C. Y. Torres López (Parque Tecnológico Querétaro – Sanfandila, Mexico), J. J. Pérez Bueno (Parque Tecnológico Querétaro – Sanfandila, Mexico), I. Zamudio Torres (Parque Tecnológico Querétaro – Sanfandila, Mexico), M. L. Mendoza-López (Instituto Tecnológico de Querétaro, Mexico), A. Hurtado Macías (Centro de Investigación en Materiales Avanzados, Mexico)and J. E. Urbina (Centro de Investigación y de Estudios Avanzados del IPN, Mexico)
Copyright: 2015
Pages: 29
Source title:
Nanotechnology Applications for Improvements in Energy Efficiency and Environmental Management
Source Author(s)/Editor(s): M. A. Shah (National Institute of Technology, Srinagar, India), M. A. Bhat (Department of Bio-Medical Engineering, Sathyabama University, India)and J. Paulo Davim (University of Aveiro, Portugal)
DOI: 10.4018/978-1-4666-6304-6.ch004
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Abstract
The scope of the chapter is showing novel experimental findings on preparing anatase TiO2 nanoparticles, first anodizing titanium into an organic media for obtaining TiO2 nanotubes, and these used as a photo catalytic active electrode in treating water polluted with organic contaminants. The substrates were grit blasted in order to obtain mechanical fixation of the generated nanotubular TiO2 structure. This was successfully achieved without diminishment of the nanotubes order and with a self-leveling of the outer surface. A new phenomenon is investigated consisting in the process of oxidation of the nanotubes in water after anodizing. Along this process, methyl orange added to the aqueous solution was discolored as part of the redox reaction involved. The final state of the modified layer was composed of conglomerates of crystalline TiO2 nanoparticles, around 4 nm in size, consisting of anatase. This was obtained under room conditions.
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