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Solvothermal synthesis of group 5 and 6 nitrides via reactions using LiNH2 and ammonia nitrogen sources

Solvothermal synthesis of group 5 and 6 nitrides via reactions using LiNH2 and ammonia nitrogen sources
Solvothermal synthesis of group 5 and 6 nitrides via reactions using LiNH2 and ammonia nitrogen sources
Transition metal chlorides are reacted with lithium amide or ammonia under solvothermal conditions in benzene at temperatures up to 550 °C. The products are metal nitrides with particle sizes of a few nm. VN, NbN, CrN, MoN and WN form with a cubic rocksalt-type structure, whilst Ta3N5 adopts the known orthorhombic structure. Products often contain carbon due to solvent decomposition, the carbon content is higher when ammonia is the nitrogen source, and varied to some extent from metal to metal. Analytical data shows nitrogen-deficient carbonitride compositions. Most samples crystallise with partially aggregated, regular crystallites. Some crystallise with a nanorod morphology and this was most pronounced in Ta3N5, which forms high aspect ratio, single crystal nanorods when synthesised with ammonia
0300-9246
6092-6097
Chirico, Pietro
23e8c0c8-c960-4b04-a80a-f9223adb1203
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Mazumder, Baishakhi
daa53102-8973-42f1-8f47-b1f41b9da89a
Chirico, Pietro
23e8c0c8-c960-4b04-a80a-f9223adb1203
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
Mazumder, Baishakhi
daa53102-8973-42f1-8f47-b1f41b9da89a

Chirico, Pietro, Hector, Andrew L. and Mazumder, Baishakhi (2010) Solvothermal synthesis of group 5 and 6 nitrides via reactions using LiNH2 and ammonia nitrogen sources. Dalton Transactions, 39, 6092-6097. (doi:10.1039/c0dt00120a).

Record type: Article

Abstract

Transition metal chlorides are reacted with lithium amide or ammonia under solvothermal conditions in benzene at temperatures up to 550 °C. The products are metal nitrides with particle sizes of a few nm. VN, NbN, CrN, MoN and WN form with a cubic rocksalt-type structure, whilst Ta3N5 adopts the known orthorhombic structure. Products often contain carbon due to solvent decomposition, the carbon content is higher when ammonia is the nitrogen source, and varied to some extent from metal to metal. Analytical data shows nitrogen-deficient carbonitride compositions. Most samples crystallise with partially aggregated, regular crystallites. Some crystallise with a nanorod morphology and this was most pronounced in Ta3N5, which forms high aspect ratio, single crystal nanorods when synthesised with ammonia

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Published date: 2010

Identifiers

Local EPrints ID: 158853
URI: http://eprints.soton.ac.uk/id/eprint/158853
ISSN: 0300-9246
PURE UUID: c37da717-d30a-484c-a34a-44e8508dd658
ORCID for Andrew L. Hector: ORCID iD orcid.org/0000-0002-9964-2163

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Date deposited: 24 Jun 2010 07:55
Last modified: 20 Jul 2019 01:16

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