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|Title: ||Mechanochemical route to the synthesis of nanostructured Aluminium nitride|
|Authors: ||Rounaghi, S. A.|
Vanpoucke, D. E. P.
Kiani Rashid, A. R.
Samadi Khoshkhoo, M.
|Issue Date: ||2016|
|Citation: ||Scientific Reports, 6 (Art N° 33375)|
|Abstract: ||Hexagonal Aluminium nitride (h-AlN) is an important wide-bandgap semiconductor material which is conventionally fabricated by high temperature carbothermal reduction of alumina under toxic ammonia atmosphere. Here we report a simple, low cost and potentially scalable mechanochemical procedure for the green synthesis of nanostructured h-AlN from a powder mixture of Aluminium and melamine precursors. A combination of experimental and theoretical techniques has been employed to provide comprehensive mechanistic insights on the reactivity of melamine, solid state metalorganic interactions and the structural transformation of Al to h-AlN under non-equilibrium ball milling conditions. The results reveal that melamine is adsorbed through the amine groups on the Aluminium surface due to the long-range van der Waals forces. The high energy provided by milling leads to the deammoniation of melamine at the initial stages followed by the polymerization and formation of a carbon nitride network, by the decomposition of the amine groups and, finally, by the subsequent diffusion of nitrogen into the Aluminium structure to form h-AlN.|
|ISI #: ||000383562000001|
|Type: ||Journal Contribution|
|Validation: ||ecoom, 2017|
|Appears in Collections: ||Research publications|
Files in This Item:
|Published version - Main article||1.72 MB||Adobe PDF|
|Supplementary material - SI||261.6 kB||Adobe PDF|
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