Synthesis and characterization of nanosilica from silica fume by precipitation method

The present study is devoted to the synthesis and characterization of nanosilica from silica fume by alkalidissolution-precipitation process under controlled conditions using poly(vinyl alcohol) (PVA) as a dispersing agent. Themorphology of the produced silica particles was examined by scanning electron microscopy (SEM). SEM images confirmthe reduction of particle agglomeration of silica sample due to existence of the surfactant. Further, the synthesized silicawas characterized by X-ray diffractometry (XRD) and Fourier transform infrared (FTIR) spectroscopy. FTIR and XRDresults show that the synthesized silica is consisted of pure silica particles and completely amorphous in nature,respectively.

کلیدواژه ها:

Silica fume ، Nanosilica ، Surfactant ، Synthesis