access icon free Morphology control and optical properties of Bi2O3 crystals prepared by low-temperature liquid phase method

γ-Bi2O3 powders were prepared from [Bi(NO3)3·5H2O] and NaOH through low-temperature liquid phase method at <90°C. This process featured low cost, simplicity and a normal pressure. Bismuth oxides were synthesised in large quantities in water systems. Morphology, structure and optical properties were characterised by X-ray diffraction, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and ultraviolet visible absorption spectrophotometry (UV–Vis). The SEM indicated that tetrahedral Bi2O3 with the edge length of 1–5 μm was formed. The FTIR spectra show a chemical bond of Bi–O existed. Bi2O3 presents the photo absorption properties from UV light region to visible light and the band gap of the Bi2O3 is 3.0 eV.

Inspec keywords: visible spectra; semiconductor growth; semiconductor materials; Fourier transform infrared spectra; scanning electron microscopy; powders; X-ray diffraction; crystal morphology; crystal structure; bismuth compounds; bonds (chemical); crystal growth from solution; ultraviolet spectra; spectrophotometry; energy gap; transmission electron microscopy

Other keywords: crystal structure; photo absorption properties; FTIR spectra; scanning electron microscopy; morphology control; optical properties; band gap; chemical bond; SEM; X-ray diffraction; UV-Vis spectra; Fourier transform infrared spectroscopy; Bi2O3; ultraviolet visible absorption spectrophotometry; powders; low-temperature liquid phase method; bismuth oxide crystals

Subjects: Crystal growth; Crystal binding; Oxide and ferrite semiconductors; Infrared and Raman spectra in inorganic crystals; Crystal growth from solution; Crystal structure of specific inorganic compounds; Visible and ultraviolet spectra of other nonmetals; Crystal morphology and orientation; Electronic structure of crystalline semiconductor compounds and insulators

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2018.5179
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