Jump to main content
Jump to site search

Issue 9, 2004
Previous Article Next Article

Fabrication and characterization of ordered macroporous PMS-derived SiC from a sacrificial template method

Author affiliations

Abstract

Three-dimensionally long range ordered macroporous SiC ceramics were prepared using a low molecular weight polymer precursor, polymethylsilane (PMS), by utilizing sacrificial colloidal silica crystalline arrays as templates which were subsequently etched off with HF (45%) after pyrolysis in an argon atmosphere. SEM, TEM, HRTEM and BET were used to specify the morphologies and BET surface areas of the porous materials. The pore sizes of about 84–658 nm and BET surface areas (pore volumes) of about 584.64 m2 g−1 (0.64 cm3 g−1)–299.44 m2 g−1 (0.25 cm3 g−1) of the achieved macroporous SiC ceramic were approximately proportional to the sizes 112–700 nm of the sacrificial silica sphere templates used. It was found for the first time that the unexpectedly high surfaces area and pore volumes of the achieved porous SiC ceramic were related to the microchannels on the walls that were caused by the interfacial diffusion of oxygen or silica from the silica sphere template into the walls of the SiC framework structures.

Graphical abstract: Fabrication and characterization of ordered macroporous PMS-derived SiC from a sacrificial template method

Back to tab navigation

Additions and corrections

Article information


Submitted
23 Oct 2003
Accepted
02 Mar 2004
First published
24 Mar 2004

J. Mater. Chem., 2004,14, 1383-1386
Article type
Paper

Fabrication and characterization of ordered macroporous PMS-derived SiC from a sacrificial template method

H. Wang, X. Li, J. Yu and D. Kim, J. Mater. Chem., 2004, 14, 1383 DOI: 10.1039/B313405A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Search articles by author

Spotlight

Advertisements