Rice Husk Reuse in the Preparation of SnO2/SiO2 Nanocomposite

Author(s)

Ferreira, Carlos Sergio ^[1] ; Santos, Pamyla Layene ^[2] ; Bonacin, Juliano Alves ^[2] ; Passos, Raimundo Ribeiro ^[1] ; Pocrifka, Leandro Aparecido ^[1]

Affiliation

^[1] Univ Fed Amazonas UFAM, Dept Quim, GEMATA LEEN, BR-69077000 Manaus, Amazonas - Brazil

^[2] Univ Estadual Campinas UNICAMP, Inst Quim, Mol Nanotechnol Lab LNANOMOL, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 18, n. 3, p. 639-643, MAY-JUN 2015.
• Web of Science Citations: 22

Abstract

In this study, biogenic SiO2 of high purity and high surface area obtained from rice husk was used for prepare a nanostructured SnO2/SiO2 composite. 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). (AU)

• FAPESP's process: 09/54066-7 - Multi-User Laboratory for Advanced Optical Spectroscopy
• Grantee: Yoshitaka Gushikem
• Support Opportunities: Multi-user Equipment Program