Abstract

R. Subitha and G. S. Prabha Littis Malar*

DOI : http://dx.doi.org/10.13005/ojc/360219

Rice husk is one of the main agricultural by products of rice processing, which is brown in colour. Rice husk forms a hard protective layer around the grains of rice, and these husks are formed from the hard materials such as opaline and lignin to protect the seed during the growing period. Rice husk is an agricultural waste covering rich sources of minerals and have more than 95% silica. SiO2 is the most abundant mineral in the world. The rice husk samples procured from the suppliers were washed with water and dried for nearly 20 hours to ensure that the rice husk is devoid of soil, dust, and rice grains particles. Rice husk was preheated at 600°C in muffle furnace to get ash. A simple method based on alkaline extraction followed by acid precipitation to produce pure silica. The synthesized silica nanoparticles were characterized by FT-IR, XRD and SEM-EDAX.

Muffle Furnace, Nanoparticles; Precipitation Method; Rice Husk Ash; Silica

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