Article history: We report for the ﬁrst time on the gas sensing properties of novel ball milled and nitrided Mg-TiO pre- Received 6 June 2015 pared powder. Ball milling was performed on an Mg-TiO powder mixture for 60 hours (h), yielding a Received in revised form 17 August 2015 reduction in crystallite sizes. The milled powder was annealed in nitrogen at 650 C, and crystalized into Accepted 14 November 2015 two face centred cubic (FCC) phases with different lattice parameters. The nitrided powder sample exhib- Available online 17 November 2015 ited various morphologies including nanorods, as well as nanoparticles showing porous behaviour. The AFM and BET analyses showed high roughness and surface area for 60 h milled Mg-TiO nanostructures. Keywords: The Mg-TiO 60 h and Mg-TiO -60 h-N materials were tested for their sensing performance towards H , 2 2 2 2 Mg-TiO NH and CH gases at various temperatures. The Mg-TiO 60 h sensing material showed high sensing 3 4 2 Mechanical milling response to NH , disclosing fast response-recovery time and high selectivity to NH . 3 3 Nanostructures © 2015 Elsevier B.V. All rights reserved. Nitridation Gas sensing 1. Introduction to about 500 C, while in
Applied Surface Science – Elsevier
Published: Jan 1, 2016
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