Synthesis of self-assembled α-GaOOH microrods and 3D hierarchical architectures with flower like morphology and their conversion to α-Ga2O3

This report reveals the methodology for the fabrication of alpha-GaOOH micro rods and micro flowers from gallium nitrate with two different complexing agents. alpha-GaOOH self-assembled 3D hierarchical architecture, comprising of nanorods and nanoribbbons with a flower like morphology, is fabricated under benign hydrothermal conditions. Calcination of alpha-GaOOH results in formation of alpha-Ga2O3 with the retention of morphology. Both gallium oxyhydroxide and gallium oxide microstructures were analyzed with SEM, EDX, TEM and powder X-ray diffraction. alpha-Ga2O3 micro flowers are furnished with nanorods having ordered diamond like cross section with a diagonal length proportion of 2:1. The hydrothermally fabricated GaOOH and their calcinated products (Ga2O3) were phase pure. (C) 2015 Elsevier B.V. All rights reserved.