Control synthesis of octahedral In2O3 crystals, belts, and nanowires

Octahedral In2O3 crystals were synthesized by evaporation of a mixture of In2O3 and graphite in a horizontal double-tube system. By adjusting the experimental conditions, In2O3 nanowires and nanobelts were also obtained. The microstructures of the resultant In2O3 materials were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), selected-area electron diffraction (SAED), X-ray diffraction. In addition, the growth mechanism of the octahedral In2O3 crystals was discussed in detail.