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In recent times, nanoscale materials have been the source of many researchers to study, which resulted in breakthrough area and a better handling, with respect to various modes of synthesis and obtaining various types of nanotubes. Great attention has been directed to the nanotubes vanadium oxide (VOx-NTs), since the vanadium oxide has several applications and in tubular form, these are intensified. However, in recent years, VOx-NTs have been synthesized by hydrothermal alkaline method by using organic templates that facilitate the formation of the nanotubular structure. In this work, the VOx-NTs were synthesized by alkaline hydrothermal method free templates. The hydrothermal treatment was used at a temperature of 180 ° C for 36 hours of aging, in order to ascertain whether these conditions to the VOx NTs were obtained. What has been confirmed by the results of the characterizations made, and they XRD, SEM, TG and DSC. The XRD showed that the obtained VOx-NTs are presented in the orthorhombic form as well as the characteristic diffraction peaks were the tubular morphology. SEM results confirmed the nanotubular multilayer morphology of VOx-NTs. With nanotubes with an average length of 8-20 μm and an average outside diameter of from 0.62 to 2.2 μm. The thermal analysis showed their mass loss events and revealed that after obtaining the nanotubular material was compression morphology and higher thermal stability thereof.

Síntese de nanotubos de oxido de vanádio pelo método hidrotérmico livre de templates