title: Morphological control of porous SiC templated by As-synthesized form of mesoporous silica.
abstract: Porous silicon carbide with fiber like morphology was successfully prepared via a hard templating approach using as-synthesized form of mesoporous silica SBA-15 as template and sucrose as carbon precursor. The obtained materials have been characterized by various sophisticated techniques such as XRD, nitrogen adsorption, HRTEM, HRSEM, FT-IR and TGA. The XRD and the nitrogen adsorption results revealed that the materials are highly crystalline and exhibit porous structure with excellent textural characteristics. It has been demonstrated that the morphology of the materials can be finely controlled from rod shaped morphology to fiber like nanostructures by the simple adjustment of the reaction time from 5 to 12 h at the reaction temperature of 1300 degrees C. The reaction time of 12 h at 1300 degrees C was found to be the best condition to obtain highly crystalline nanofiber like morphology. The obtained materials display beautiful nanofiber morphology which has the diameter of 20 to 60 nm and a length of 7 to 10 microm which is much longer than the previously reported SiC nanofibers.
authors: International Centre for Materials Nanoarchitectonics, WPI Research Centre, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
authors: Sakthivel Tamil
authors: ST
authors: Selvan
authors: Salem S
authors: SS
authors: Aldeyab
authors: S M Javaid
authors: SM
authors: Zaidi
authors: Dakshinamoorthy
authors: D
authors: Arivuoli
authors: Katsuhiko
authors: K
authors: Ariga
authors: Toshiyuki
authors: T
authors: Mori
authors: Ajayan
authors: A
authors: Vinu