Open AccessMesporous 3C-SiC Hollow Fibers
Author(s) -
Yangwen Liu,
Huilin Hou,
Xueqiu He,
Weiyou Yang
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/s41598-017-02147-8
Subject(s) - polyvinylpyrrolidone , mesoporous material , materials science , high resolution transmission electron microscopy , transmission electron microscopy , electrospinning , chemical engineering , fiber , scanning electron microscope , nanofiber , morphology (biology) , nanotechnology , nanoparticle , composite material , polymer , polymer chemistry , chemistry , catalysis , organic chemistry , biology , engineering , genetics
In the present work, for the first time, we reported the exploration of mesoporous 3 C -SiC hollow fibers via single-spinneret electrospinning of polyureasilazane (PSN) and polyvinylpyrrolidone (PVP) solution followed by high-temperature pyrolysis treatment. The resultant products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and N 2 adsorption. The as-prepared hollow fibers with totally mesoporous walls were uniformly sized in diameter and high purity in morphology. They were composed of single-crystalline 3 C -SiC nanoparticles with a surface area of 21.75 m 2 /g and average pore diameter of ~34 nm. The PSN concentration played a determined role on the formation of hollow fibers rather than the conventional solid counterparts, enabling their growth in a tunable manner. A possible mechanism was proposed for the formation of mesoporous SiC hollow fiber.