Synthesis and morphology evolution of GaN/C nanocables

Du, Xuebin; Zhu, Yanqing; Yang, Tao; Shen, Yue; Zeng, Yi; Xu, Fangfang

doi:10.1007/s11051-008-9519-4

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…Thus, it is extremely important to have a protective sheath made of thermally and chemically stable materials to enhance their performances. Graphite coatings could act as chemically inert protecting layers for GaN nanomaterials, and several groups have coated GaN nanomaterials with graphite layer by various methods, such as arc discharge in nitrogen atmosphere, two-step catalytic reaction, microwave plasma-enhanced chemical vapor deposition, annealing experiment based on surface decoration with small metal clusters, and a carbon-assisted chemical vapor deposition . Furthermore, the synthesis of GaN/PMMA composite was also reported .…”

Section: Introductionmentioning

confidence: 99%

Controlled Synthesis of GaN@SiO₂ Particles in Preventing the Hydrolysis of GaN

et al. 2011

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GaN small particles are sensitive to water molecules and easily hydrolyzed into GaOOH when exposed to atmosphere. One of the perfect solutions is to coat them with SiO2, which serves as a protective layer against adsorption of water molecules on the GaN surface and effectively prevents the hydrolysis of GaN. Herein, the synthesis of GaN@SiO2 with morphologies of microrhombuses and microrods is demonstrated. The products of GaN@SiO2 were characterized by XRD, indicating that there was almost no hydrolysis of GaN@SiO2 after one year exposition in the air. The photoluminescence (PL) of GaN microrhombuses and microrods exhibited emission peaks in the blue region, as did the GaN@SiO2 products. The luminescence intensity increased after SiO2 coating, while the PL position was not shifted. The silica shell effectively prevented the hydrolysis of GaN and successfully preserved the luminescence properties of GaN microrhombuses and microrods.

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