Influence of natural templates in the synthesis of nickel aluminate and the evaluation in methanol detection

In the present work, a comparative study of structural and morphological properties of nickel aluminates, modified with natural templates, was performed. Nickel aluminates were synthetized using the Pechini method with biotemplates: Helianthus annuus (sunflower), Leucaena leucocephala (white mimosa) and Blattodea (cockroach). The materials obtained were characterized with the x-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Diffuse Reflectance Spectroscopy (DRS) and Nitrogen Physisorption. The electrochemical detection of methanol was evaluated with chronoamperometrics techniques. The results show that the boundary values and detection range are promised, especially for nickel aluminates in which the Helianthus annuus (sunflower) template was used. (paper)