Crystalline silica prepared at room temperature from aqueous solution in the presence of intrasilica bioextracts

摘要: Silica, exhibiting crystalline texture has been prepared from aqueous solution at pH ca. 7 in the presence of intrasilica biomolecules extracted primitive plant Equisetum telmateia; some silica shows interplanar lattice spacings 3.5 A and is present lath-like objects up to 20–30 nm wide more than 100 length; an electron diffraction pattern obtained this material also 3.46, 2.13 1.70 suggesting that might be quartz.