Metal-urea complex - A precursor to metal nitrides

被引：76

作者：

Qiu, Y ^{[1
]}

Gao, L ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2004年 / 87卷 / 03期

关键词：

D O I：

10.1111/j.1551-2916.2004.00352.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel and general route to synthesize various metal nitrides (AlN, CrN, and zeta-Fe2N) from metal-urea complexes is presented. These complexes, especially metal-urea chloride, have proved to be useful precursors to metal nitrides, because urea molecules construct a coordination sphere around the metal atom and form a stable structure, compared with the air-sensitive halide. Different anions in the second coordination sphere determine the reaction mechanism. The transformation from metal-urea chloride to nitride is thought to follow a nucleation-growth mechanism, while that from metal-urea nitrate is thought to follow a nitridation mechanism. We anticipate that this metal-urea complex will rind applications in the fabrication of other, more complex, nitrides.

引用

页码：352 / 357

页数：6

共 29 条

[1] Preparing γ′-Fe4N ultrafine powder by twice-nitriding method [J].

Cao, MS ;

Wang, RG ;

Fang, XY ;

Cui, ZX ;

Chang, TJ ;

Yang, HJ .

POWDER TECHNOLOGY, 2001, 115 (01) :96-98

[2] Thermal decomposition study of the coordination compound [Fe(urea)6](NO3)3 [J].

Carp, O ;

Patron, L ;

Diamandescu, L ;

Reller, A .

THERMOCHIMICA ACTA, 2002, 390 (1-2) :169-177

[3] Charge-transfer molecular dynamics of aluminium nitride [J].

Catá, GF ;

Lorenzo, GR ;

Odriozola, JA ;

Alvarez, LJ .

CHEMICAL PHYSICS LETTERS, 2002, 356 (1-2) :127-132

[4] Theoretical and IR-matrix isolation studies on the urea and urea-D4,-13C, and-1,3-15N2 substituted molecules [J].

Dobrowolski, JC ;

Kolos, R ;

Sadlej, J ;

Mazurek, AP .

VIBRATIONAL SPECTROSCOPY, 2002, 29 (1-2) :261-282

[5] Deposition of aluminium nitride films by electron cyclotron resonance plasma-enhanced chemical vapour deposition [J].

Ecke, G ;

Eichhorn, G ;

Pezoldt, J ;

Reinhold, C ;

Stauden, T ;

Supplieth, F .

SURFACE & COATINGS TECHNOLOGY, 1998, 98 (1-3) :1503-1509

[6] Morphological control of nanocrystalline aluminum nitride: Aluminum chloride-assisted nanowhisker growth [J].

Haber, JA ;

Gibbons, PC ;

Buhro, WE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (23) :5455-5456

[7] Synthesize AlN nanocrystals in organic solvent at atmospheric pressure [J].

Hao, XP ;

Yu, MY ;

Cui, DL ;

Xu, XG ;

Bai, YJ ;

Wang, QL ;

Jiang, MH .

JOURNAL OF CRYSTAL GROWTH, 2002, 242 (1-2) :229-232

[8] Poly(imidogallane): Synthesis of a crystalline 2-D network solid and its pyrolysis to form nanocrystalline gallium nitride in supercritical ammonia [J].

Jegier, JA ;

McKernan, S ;

Gladfelter, WL .

CHEMISTRY OF MATERIALS, 1998, 10 (08) :2041-+

[9] Comparison of some methods for activation energy determination of thermal decomposition reactions by thermogravimetry [J].

Keuleers, RR ;

Janssens, JF ;

Desseyn, HO .

THERMOCHIMICA ACTA, 2002, 385 (1-2) :127-142

[10] SYNTHESIS OF FINE AIN POWDER BY VAPOR-PHASE REACTION [J].

KIMURA, I ;

HOTTA, N ;

NUKUI, H ;

SAITO, N ;

YASUKAWA, S .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (01) :66-68

← 1 2 3 →