Rice Husk Reuse in the Preparation of SnO2/SiO2Nanocomposite

AUTOR(ES)

Ferreira, Carlos Sérgio, Santos, Pãmyla Layene, Bonacin, Juliano Alves, Passos, Raimundo Ribeiro, Pocrifka, Leandro Aparecido

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

2015-06

RESUMO

In this study, biogenic SiO2 of high purity and high surface area obtained from rice husk was used for prepare a nanostructured SnO2/SiO2composite. The predominantly amorphous silica was extracted in an acidic route and then the nanocomposite was done via sol-gel route using ethylene glycol and citric acid followed by heat treatment. SiO2 content of the rice husk was determined by X-ray fluorescence (XRF) and its specific surface area determined by nitrogen adsorption. The composite nanostructured SnO2/SiO2 was structurally characterized by the techniques of X-ray diffraction (XRD), Raman and Fourier transform infrared (FT-IR) spectroscopy. The morphological characteristics were revealed by scanning electron microscope (SEM).

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