Synthesis of SiO2 Nanopowder from Rice Husk Ash
In the present work, we demonstrate a method to synthesis SiO2 nanopowder from rice husk ash by using a vibro-milling followed by a heat treatment technique. Rice husk ash was milled by vibro-milling for 4 h to obtain nanopowder. In order to eliminate carbonaceous material, the nanopowder was heat at 1000°C for 3 h. Characteristic of the powder was then investigated by XRF, XRD, and SEM techniques. The silica nanopowder with 95% purity was obtained after the heat-treatment. The result indicated that the present method is a beneficial process to produce the silica nanopowders of low cost and high mass productivity.
A. Ruksudjarit and G. Rujijanagul, "Synthesis of SiO2 Nanopowder from Rice Husk Ash", Advanced Materials Research, Vols. 55-57, pp. 649-652, 2008