Abstract
In this investigation, we report the synthesis of gallium nitride (GaN) nanoparticles from ammonium-carbonato-dihydroxo-gallate (NH 4[Ga(OH) 2CO 3]) in the flow of NH 3 gas in a temperature range of 500–900 °C. The GaN nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR). The FTIR and XPS revealed that the conversion of NH 4[Ga(OH) 2CO 3] to GaN under a flow of ammonia proceeds stepwise via amorphous gallium oxynitrides (GaO x N y ) intermediates. Nanosized GaN particles with an average diameter of approximately 20–40 nm were obtained. The results obtained demonstrate that the large-quantity nanosized GaN particles can be synthesized from NH 4[Ga(OH) 2CO 3] powders.
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