Abstract
Different In2O3 nanostructures, including nanowires, novel nanoarrows and nanorods, were synthesizedthrough introducing the catalyst and adjusting the source material in the chemical vapourdeposition (CVD) route. The morphologies and crystalline structures are characterized byx-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) andhigh-resolution transmission electron microscopy (HRTEM). The growth mechanisms ofthese structures are discussed. A competitive growth mechanism, bottom growthmechanism and vapour–solid (VS) mechanism were proposed to explain the growth ofIn2O3 nanowires, nanoarrows and nanorods, respectively. The growth mechanism analyses arevaluable in understanding the growth behaviour of reagent species in the vapour route,which is very crucial to realize the controlled growth of nanostructures. Further, theobtained nanostructures have important potential applications as functional blocks innanodevices.
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