1. Structural transformation in Bi2O3 and its application for photocatalytic degradation of organic dyes.
- Author
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Kirubanithy, Kaviyapriya, Kumar, Jayaraj Santhosh, Beura, Rosalin, Thangadurai, Paramasivam, Sharma, Veerendra K., Prajapat, C. L., and Yusuf, S. M.
- Subjects
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ORGANIC dyes , *TIME-resolved spectroscopy , *PHASE transitions , *BISMUTH oxides , *ULTRAVIOLET-visible spectroscopy , *SUNSHINE - Abstract
In this work, bismuth oxide (Bi2O3) photocatalyst was prepared using nitrates of bismuth through a single step microwave method. These Bi2O3 photocatalysts were analysed by using various techniques such as XRD, Raman, UV-Vis spectroscopy and time resolved photoluminescence (TRPL) life time measurements. The Bi2O3 photocatalyst was formed with tetragonal structure in the as-prepared form and it was structurally transformed into a monoclinic phase with appropriate heat-treatment at 550 ᵒC. This was noticed as a phase transformation from β-phase (tetragonal) to α-phase (monoclinic structure) which has been confirmed by XRD and Raman spectroscopy analysis. The synthesized Bi2O3 photocatalyst with monoclinic phase was tested for the photocatalytic degradation of Rhodamine B (Rh-B) under Sun light irradiation and the results are discussed in this paper. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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