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Mesporous 3C-SiC Hollow Fibers.

ABSTRACT: In the present work, for the first time, we reported the exploration of mesoporous 3C-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 N₂ 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 3C-SiC nanoparticles with a surface area of 21.75?m²/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.

SUBMITTER: Liu Y

PROVIDER: S-EPMC5432512 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Mesporous 3C-SiC Hollow Fibers.

Liu Yangwen Y Hou Huilin H He Xinbo X Yang Weiyou W

Scientific reports 20170515 1

In the present work, for the first time, we reported the exploration of mesoporous 3C-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<sub>2</sub> adsorption. The as-prepared hollow fibers wit ...[more]

PMID: 28507344

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