Optical and Morphological Properties of TiO2 Nanotubes for Sensor Applications

Anderson Dussan; Heiddy P. Quiroz

doi:10.4028/www.scientific.net/AMR.1119.121

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1119Optical and Morphological Properties of TiO2...

Optical and Morphological Properties of TiO₂ Nanotubes for Sensor Applications

Abstract:

Highly-ordered TiO₂ nanotube arrays were fabricated by electrochemical anodizing, using titanium foils as the anode and cathode and changing the amount of fluoride (NH₄F) in the solution. The effect of synthesis parameters, such as, ethylene glycol solutions containing different amounts of water, NH₄F, anodizing voltage, and current density were studied on the optical and morphological properties. It was observed from XRD espectra, that Anatase and Rutile phases were influenced by annealing, between 300 and 723 K, for all the samples, while morphological changes were not observed. Nanotubes diameters varying beteween 20 and 50 nm with diferent length sizes were observed from SEM micrographics. A high absorption for the UV region and a gap band round of 3.1 eV were obtained from spectrophotometry measurements. The correlation between the synthesis parameters and the optical properties presented are an excellent indicator for the TiO₂ nanotubes application as optical sensors.

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Advanced Materials Research (Volume 1119)

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121-125

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https://doi.org/10.4028/www.scientific.net/AMR.1119.121

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Online since:

July 2015

Authors:

Anderson Dussan*, Heiddy P. Quiroz

Keywords:

Morphological Properties, Nanotubes, Optical Sensors, TiO₂

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