Direct solvothermal synthesis of early transition metal nitrides
Direct solvothermal synthesis of early transition metal nitrides
Solvothermal reactions of TaCl5 with LiNH2 in benzene result in nanocrystalline Ta3N5 at 500 or 550 °C. The 25 nm Ta3N5 particles have a band gap of 2.08?2.10 eV. The same reactions in mesitylene resulted in a higher crystallization temperature and large amounts of carbon incorporation due to solvent decomposition. Reactions of Ta(NMe2)5 with LiNH2 under the same conditions resulted in TaN. Rocksalt-type MN phases are obtained for Zr, Hf, or Nb when their chlorides (ZrCl4, HfCl4, or NbCl5) or dialkylamides (M(NEtMe)4, M = Zr, Hf) are reacted with LiNH2 under similar conditions. With the amides, there is some evidence for nitrogen-rich compositions (HfN>1), and carbon is incorporated into the products through pyrolysis of the dialkylamide groups.
9684-9690
Mazumder, Baishakhi
daa53102-8973-42f1-8f47-b1f41b9da89a
Chirico, Pietro
23e8c0c8-c960-4b04-a80a-f9223adb1203
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
20 October 2008
Mazumder, Baishakhi
daa53102-8973-42f1-8f47-b1f41b9da89a
Chirico, Pietro
23e8c0c8-c960-4b04-a80a-f9223adb1203
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Mazumder, Baishakhi, Chirico, Pietro and Hector, Andrew L.
(2008)
Direct solvothermal synthesis of early transition metal nitrides.
Inorganic Chemistry, 47 (20), .
(doi:10.1021/ic800767m).
Abstract
Solvothermal reactions of TaCl5 with LiNH2 in benzene result in nanocrystalline Ta3N5 at 500 or 550 °C. The 25 nm Ta3N5 particles have a band gap of 2.08?2.10 eV. The same reactions in mesitylene resulted in a higher crystallization temperature and large amounts of carbon incorporation due to solvent decomposition. Reactions of Ta(NMe2)5 with LiNH2 under the same conditions resulted in TaN. Rocksalt-type MN phases are obtained for Zr, Hf, or Nb when their chlorides (ZrCl4, HfCl4, or NbCl5) or dialkylamides (M(NEtMe)4, M = Zr, Hf) are reacted with LiNH2 under similar conditions. With the amides, there is some evidence for nitrogen-rich compositions (HfN>1), and carbon is incorporated into the products through pyrolysis of the dialkylamide groups.
This record has no associated files available for download.
More information
e-pub ahead of print date: 19 September 2008
Published date: 20 October 2008
Identifiers
Local EPrints ID: 145963
URI: http://eprints.soton.ac.uk/id/eprint/145963
ISSN: 0020-1669
PURE UUID: c43ddd1c-a445-4099-8561-de422c074b92
Catalogue record
Date deposited: 20 Apr 2010 09:04
Last modified: 14 Mar 2024 02:39
Export record
Altmetrics
Contributors
Author:
Baishakhi Mazumder
Author:
Pietro Chirico
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
