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Band-Gap Engineering and Enhanced Photocatalytic Activity of Sm and Mn Doped BiFeO3 Nanoparticles.
- Source :
-
Journal of the American Ceramic Society . Jan2017, Vol. 100 Issue 1, p31-40. 9p. - Publication Year :
- 2017
-
Abstract
- Bi1- xSm xFe1- yMn yO3 ( BSFMO, x = 0.0, 0.05; y = 0.0, 0.05, 0.10, 0.15, 0.20, 0.25) nanoparticles were synthesized by using double solvent sol-gel method. Photocatalytic activity was investigated under UV and visible-light illumination. The structural, morphological, and optical properties were analyzed by X-ray diffraction, scanning electron microscopy, and UV-vis spectroscopy respectively. The crystallite size of BiFeO3 ( BFO) decreases from (57.3-17.2 nm) with the increase in Sm and Mn-doping concentration. The surface morphology shows that the pure and Sm-doped BFO nanoparticles are irregular in shape but changes to spherical shape after Mn-doping up to 25%. The band-gap engineering of BFO nanoparticles is achieved by co-doping of Sm and Mn. The band-gap of BFO could be tuned successfully from 2.08-1.45 eV, which may be due to the distortion induced in Fe-O octahedron and the rearrangement of molecular orbitals. These results give rise to enhanced photocatalytic activity by degradation of organic dyes ( MB, CR, and MV) under the visible-light illumination. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 100
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 120669453
- Full Text :
- https://doi.org/10.1111/jace.14487