Analytical analysis of synthesized biosilica from bioresidues

• Spherical shape and 99% purity of biosilica were identified in SEM–EDS.
• The XRD patterns were analyzed and compared the phase nature of ashes and biosilica.
• The functional groups of biosilica were recorded by FTIR.

Rice straw and maize stalk are major residues of agriculture field. These residues were utilized to synthesis nano-biosilica by sol–gel route. The structural properties of rice straw ash, maize stalks ash and biosilica were characterized by X-ray diffraction and FTIR. Morphology evaluation by SEM confirms the formation of nano-biosilica of spherical shape.

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