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Direct solvothermal synthesis of early transition metal nitrides

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.
0020-1669
9684-9690
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
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), 9684-9690. (doi:10.1021/ic800767m).

Record type: Article

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.

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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
ORCID for Andrew L. Hector: ORCID iD orcid.org/0000-0002-9964-2163

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Date deposited: 20 Apr 2010 09:04
Last modified: 05 Nov 2019 02:01

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