Ultra-rapid, sustainable and selective synthesis of silicon carbide powders and nanomaterials via microwave heating

Carassiti, L., Jones, A., Harrison, P. , Dobson, P.S. , Kingman, S., MacLaren, I. and Gregory, D.H. (2011) Ultra-rapid, sustainable and selective synthesis of silicon carbide powders and nanomaterials via microwave heating. Energy and Environmental Science, 4, pp. 1503-1510. (doi: 10.1039/C0EE00799D)

Abstract

Silicon carbide has been synthesised from silicon or silica combined with activated carbon or graphite via microwave heating over timescales from minutes to seconds without the need for inert atmospheres or subsequent purification. The carbide morphology and phase purity can be controlled by the microwave cavity used and the power applied and hence by the heating rate. Short irradiation times (ca. 5 minutes) in a multimode cavity using activated carbon produce single phase β-SiC nanofibres as small as 5 nm in diameter while large crystallites of α- and β-SiC can obtained in <<1 minute using high power, single mode cavity microwave techniques.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Carassiti, Ms Lucia and Harrison, Dr Philip and Dobson, Dr Phil and MacLaren, Dr Ian and Gregory, Professor Duncan
• Authors: Carassiti, L., Jones, A., Harrison, P., Dobson, P.S., Kingman, S., MacLaren, I., and Gregory, D.H.
• Subjects: Q Science > QD Chemistry
• College/School: College of Science and Engineering > School of Chemistry; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Energy and Environmental Science
• ISSN: 1754-5692
• ISSN (Online): 1754-5706
• Published Online: 07 March 2011