. Schematic illustration of the fabrication procedure for SiZrOC nanofiber membranes

. FT-IR spectra of the PZSO precursor nanofibers

. (a) TG curve of the PZSO precursor fiber and (b) FT-IR spectra of pyrolysis gas product at various temperatures

. (a) Tensile strength-tensile strain of the SiZrOC nanofiber membranes (insets showing photographs of a piece of SiZrOC nanofiber membrane hanging a 10 g weight and bending with a glass bar); (b) SEM image of the SiZrOC nanofiber (inset showing distribution of fiber diameter); (c) EDS spectrum of SiZrOC nanofiber; (d) TEM image of the SiZrOC fiber

. XRD patterns of SiZrOC and SiZrO nanofibers

. (a) XPS survey spectra of the SiZrOC and SiZrO fibers, and peak fittings of the SiZrOC fibers of (b) C1s, (c) Si2p, (d) Zr3d

. (a) Photograph of SiZrOC nanofiber membrane heated by alcohol lamp, (b) thermal conductivities and (c) extinction coefficient (e) of SiZrOC and SiZrO nanofibers, and (d) thermal conductivity comparison among different ceramic fibers at 1000 ℃

. Weight retention versus temperature of the SiZrOC nanofiber