Open AccessMorphology control and optical properties of Bi 2 O 3 crystals prepared by low‐temperature liquid phase method
Author(s) -
Li Jin,
Wu Ben Ze,
Zhou Zhen Xiang
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5179
Subject(s) - fourier transform infrared spectroscopy , scanning electron microscope , materials science , absorption edge , analytical chemistry (journal) , bismuth , band gap , absorption spectroscopy , phase (matter) , spectroscopy , absorption (acoustics) , absorption band , infrared , infrared spectroscopy , optics , chemistry , optoelectronics , chromatography , organic chemistry , composite material , physics , quantum mechanics , metallurgy
γ‐Bi 2 O 3 powders were prepared from [Bi(NO 3 ) 3 ·5H 2 O] 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 Bi 2 O 3 with the edge length of 1–5 μm was formed. The FTIR spectra show a chemical bond of Bi–O existed. Bi 2 O 3 presents the photo absorption properties from UV light region to visible light and the band gap of the Bi 2 O 3 is 3.0 eV.