Behavior of glycerol concentration in a HCl electrolyte for obtaining Titania nanostructures by anodic oxidation
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MRS Advances © 2019 Materials Research Society DOI: 10.1557/adv.2019.448
Behavior of glycerol concentration in a HCl electrolyte for obtaining Titania nanostructures by anodic oxidation E. Martínez Cantú1, D. J. Araujo-Pérez2, L. García-González1, A. Báez Rodríguez1, J. Hernández-Torres1, L. Zamora-Peredo1 1 Centro de Investigación en Micro y Nanotecnología (Microna), Universidad Veracruzana, Boca del Río, Veracruz, México
2
Facultad de Ciencias Químicas región Veracruz, Universidad Veracruzana, Boca del Río, Veracruz, México
ABSTRACT
In this work, the anodization of grade 2 titanium was performed using a HCl-based electrolyte in order to obtain Titania nanostructures. Different glycerol concentrations were added to the HCl electrolyte to study the effect it has on the shape and density of the nanostructures, additionally, anodization time and voltage was also varied. The anodized samples were observed by SEM microscopy and studied by Raman spectroscopy and X-ray diffraction. Raman spectroscopy and XRD showed the formation of the anatase phase of the TiO2. By SEM it was possible to observe several changes in the shape of the structures, by adding glycerol ball-like structures were visible, anodization time did not change the shape of the nanostructures. However, the voltage variation showed a clear control on the shape of the structures, forming nanotubes at higher voltages. It was concluded that a better control of the shape and density of the nanostructures is achieved by adding glycerol, however, in order to overcome the resistance that the electrolyte brings, higher voltages are required.
INTRODUCTION The importance of materials has been essential for the development of human life, since the human being realized the benefits of the materials they were using, the task of investigating new materials for human sustainability became a job that lasted and would last for years. The arrival of nanostructures has been possible due to the micro and
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nano technology, the study of matter at molecular levels is very important in the manufacture of sensors, biomaterials, photocatalytic materials, materials for mechanical and abrasive applications, just to name a few, since having more control at this scale benefits having a better control of the final properties [1]. One of the most important materials in this area is the TiO 2, which due to its properties, it is used as a nanomaterial, and thanks to that, scientist have sought to synthesize it from procedures that are not of such high cost, the electrochemical anodization presents this benefit compared to other methods of synthesis. Plenty of studies show the benefits of using electrolytes based on fluorine to control the density, shape and size of TiO2 nanotubes [2]. However, other works have sought to find an alternative route t
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