Abstract
In this study, a novel source of mesoporous silicon has been reported using the waste husk ashes obtained from Panicum miliare millet. Silica was available as the major content to about 94–96 % for the ash heated to 900 °C for 12 hrs. Silica from Panicum miliare husk ashes is reduced into mesoporous silicon by magnesiothermic process. Chemical content of the reduced silicon were determined by ICP-OES. Porosity studies was carried out by nitrogen adsorption-desorption studies. The average BJH pore diameter was determined to be 55.674 A. The resulting adsorption isotherm is type-IV with capillary-condensation of hysteresis H3 due to aggregates of non-rigid slit pores. Its amorphous nature was determined by TEM and uniformity in pore size distribution was confirmed by BJH pore size distribution. Surface characterization was done by SEM-EDS, TEM and TEM-SAED.
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