Journal
ELECTROCHIMICA ACTA
Volume 132, Issue -, Pages 512-523Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.03.166
Keywords
Nanosctructure; NiTiO3; NiTiO3-TiO2 nanocomposite; Optical; Semiconductor
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Nanostructured NiTiO3 and NiTiO3-TiO2 nanocomposite were prepared by a low temperature modified sal-gel method. A calcination temperature of 600 degrees C determined by thermal gravimetric analysis was applied for converting prepared gel to oxide materials. X-ray differactometry and transmission electron microscopy were used for characterization of crystal structure and morphology of prepared materials. A crystallite size of 20-30 nm for nickel titanate and a nanoparticle size smaller than 50 nm were obtained for prepared samples. Brunauer-Emmett-Teller analysis showed the behavior of mesoporous materials with small adsorbate-adsorbent interaction potentials. By using UV-Vis diffuse reflectance spectroscopy and Mott-Schottky analysis, the energy band structures of nanostructured NiTiO3 and NiTiO3-TiO2 nanocomposite were determined and forward bias of cyclic voltammograms of samples were interpreted in terms of their energy band structure. (C) 2014 Elsevier Ltd. All rights reserved.
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