title: Infrared and infrared emission spectroscopy of gallium oxide alpha-GaO(OH) nanostructures.
abstract: Infrared spectroscopy has been used to study nano- to micro-sized gallium oxyhydroxide alpha-GaO(OH), prepared using a low temperature hydrothermal route. Rod-like alpha-GaO(OH) crystals with average length of approximately 2.5 microm and width of 1.5 microm were prepared when the initial molar ratio of Ga to OH was 1:3. beta-Ga(2)O(3) nano and micro-rods were prepared through the calcination of alpha-GaO(OH). The initial morphology of alpha-GaO(OH) is retained in the beta-Ga(2)O(3) nanorods. The combination of infrared and infrared emission spectroscopy complimented with dynamic thermal analysis were used to characterise the alpha-GaO(OH) nanotubes and the formation of beta-Ga(2)O(3) nanorods. Bands at around 2903 and 2836 cm(-1) are assigned to the -OH stretching vibration of alpha-GaO(OH) nanorods. Infrared bands at around 952 and 1026 cm(-1) are assigned to the Ga-OH deformation modes of alpha-GaO(OH). A significant number of bands are observed in the 620-725 cm(-1) region and are assigned to GaO stretching vibrations.
authors: Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane, Queensland 4001, Australia.
authors: Jing Jeanne
authors: JJ
authors: Yang
authors: Yanyan
authors: Y
authors: Zhao
authors: Ray L
authors: RL
authors: Frost
mesh_terms: D005708:Gallium / Q000032:analysis*; D049329:Nanostructures / Q000032:analysis*; D013055:Spectrophotometry, Infrared; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: C038863:gallium oxide; D005708:Gallium