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Authors
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Rounaghi, S. A. ; Eshghi, H. ; Scudino, S. ; Vyalikh, A. ; Vanpoucke, D. E. P. ; Gruner, W. ; Oswald, S. ; Kiani Rashid, A. R. ; Khoshkhoo, S. ; Scheler, U. ; Eckert, J.
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Title
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Mechanochemical route to the synthesis of nanostructured Aluminium nitrile
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Date
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21.09.2016
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Number
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46850
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Abstract
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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 metal-organic 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.
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Publisher
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Scientific Reports
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Wikidata
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Citation
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Scientific Reports 6 (2016) Article Number: 33375
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DOI
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https://doi.org/10.1038/srep33375
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