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.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide