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Synthesis of novel g-C$_3$N$_4$/KBiFe$_2$O$_5$ composite with enhanced photocatalytic efficiency
RANJAN RAI MURALIKRISHNA MOLLI
Volume 43 Published: 4 September 2020 Article ID 0257
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Fulltext
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Permanent link:
https://www.ias.ac.in/article/fulltext/boms/043/0257 -
Keywords
Photo-catalysts ;composites ;brownmillerite ;graphitic carbon nitride ;KBiFe$_2$O$_5$.. -
Abstract
Novel graphitic carbon nitride (g-C$_3$N$_4$)/potassium bismuth ferrite (KBiFe$_2$O$_5$) composite photocatalysts were synthesized using facile grinding and calcination method. X-ray diffraction, transmission electron microscopy, scanning electron microscopy and UV–visible diffuse reflectance spectroscopy analysis were carried out to investigate structural,morphological and optical properties of the prepared samples. The photocatalytic properties of the samples were studied by photocatalytic degradation of methylene blue under visible light irradiation. The composite showed enhanced photocatalytic efficiency compared to both pristine g-C$_3$N$_4$ and KBiFe$_2$O$_5$. Out of four composites with different weight percentagesof KBiFe$_2$O$_5$, one with 30 wt% showed the maximum photocatalytic efficiency. Samples with a higher content of KBiFe$_2$O$_5$ showed decreased photocatalytic efficiency indicating 30 wt% as the optimum composition. The increase in the photocatalytic efficiency is mainly due to efficient charge separation of photo-generated electron–hole pairs in the composites.The possible mechanism for the photo-catalysis of g-C$_3$N$_4$/KBiFe$_2$O$_5$ composites was also proposed.
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Author Affiliations
RANJAN RAI1 MURALIKRISHNA MOLLI1
- Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam, Anantapur 515134, India
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Dates
- Published
- 4 September 2020
- Manuscript received
- 5 February 2020
- Accepted
- 27 March 2020
- Final version published online
- 4 September 2020
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Bulletin of Materials Science
Volume 46, 2023
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