Husk of rice as source of SiO2

  • Jorge Enrique Rodríguez-Páez Universidad del Cauca
  • Diego Macíaz-Pinto Universidad del Cauca
  • Claudia Andrea Arcos Universidad del Cauca
Keywords: Husk of rice, silica, synthesis, characterization


The husk of rice contains high levels of silica when calcined. This work was carried out to study the nature of the organic components where the silicon complexes are nucleated and the best conditions for the synthesis of SiO2. The husk of rice and silica were analized by SEM, DRX, FTIR, TGA. The husk was treated with HCl to eliminate impurities as Fe, Na, K, etc. The results show that silica nucleates in the external part of the husk, composite of cellulose. SiO2 is amorphous, with a high specific surface (~2772 m2 /g), arbitrary morphology and nanometric size (< 200 nm).

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Author Biographies

Jorge Enrique Rodríguez-Páez, Universidad del Cauca

Grupo CYTEMAC. Departamento de Física. FACNED

Diego Macíaz-Pinto, Universidad del Cauca

Grupo CYTEMAC. Departamento de Física. FACNED

Claudia Andrea Arcos, Universidad del Cauca

Grupo Estudios de la Diversidad Vegetal. Departamento de Biología. FACNED


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How to Cite
Rodríguez-Páez J. E., Macíaz-Pinto D., & Arcos C. A. (2014). Husk of rice as source of SiO2. Revista Facultad De Ingeniería Universidad De Antioquia, (41), 7-20. Retrieved from