Preparation of porous silica ceramics from silica spinning solution and introduced silica particles by electrospinning

Porous silica ceramics were successfully prepared from silica spinning solution and introduced silica particles by electrospinning. After sintering, the sample was mainly composed of the introduced silica particles instead of the electrospun ceramic fibers. Therefore, the role of the introduced particles in this work was quite different from that of the introduced fillers in other electrospinning works. The porosity of the samples sintered at 1000 °C and 1200 °C were 62.4% and 55.6%, respectively. Furthermore, the porosity of the sintered sample can be adjusted by changing the content of the introduced silica particles. This method can be extended to prepare other porous ceramics just by changing the kinds of introduced particles.

► Porous silica ceramics were successfully prepared by electrospinning.
► Silica particles were introduced in electrospun fibers to decrease the weight loss.
► The porosity of the sample can be adjusted.
► This method can be extended to prepare other porous ceramics.