Sol–gel preparation of low oxygen content, high surface area silicon nitride and imidonitride materials

DOI: 10.1039/C5DT04961J

Authors: Kripasindhu Sardar (University of Southampton) , Richard Bounds (University of Southampton) , Marina Carravetta (University of Southampton) , Geoff Cutts (University of Birmingham) , Justin Hargreaves (University of Glasgow) , Andrew Hector (University of Southampton) , Joe Hriljac (University of Birmingham) , William Levason (University of Southampton) , Felix Wilson (University of Southampton)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Dalton Trans. , VOL 13

State: Published (Approved)
Published: February 2016
Diamond Proposal Number(s): 9124

Abstract: Reactions of Si(NHMe)4 with ammonia are effectively catalysed by small ammonium triflate concentrations, and can be used to produce free-standing silicon imide gels. Firing at various temperatures produces amorphous or partially crystallised silicon imidonitride/nitride samples with high surface areas and low oxygen contents. The crystalline phase is entirely α-Si3N4 and structural similarities are observed between the amorphous and crystallised materials.

Subject Areas: Chemistry


Instruments: I15-Extreme Conditions