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Investigation of nonlinear optical and photocatalytic properties of sol-gel derived KBiFe2O5

Rai, Ranjan and George, Agnes and Muthukumar, V Sai and Varma, K B R and Philip, Reji and Molli, Muralikrishna (2019) Investigation of nonlinear optical and photocatalytic properties of sol-gel derived KBiFe2O5. In: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 30 (12). pp. 11451-11457.

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Official URL: https://dx.doi.org/10.1007/s10854-019-01494-8

Abstract

KBiFe2O5 polycrystalline powder was synthesized via citrate assisted sol-gel route. Its structural, microstructural, linear, nonlinear optical and photocatalytic properties were investigated. X-ray diffraction analysis revealed its structure to be monoclinic phase at room temperature. Nonlinear optical absorption of this material was investigated using open aperture z-scan technique. A three-photon type absorption mechanism fitted well with the experimental data, and the corresponding nonlinear absorption coefficient was calculated to be 4x10(-23)m(3)/W-2. The band gap of this material as determined by diffuse reflectance spectroscopy was found to be 1.75eV. This makes it suitable for visible light driven photocatalytic applications. The photocatalytic property of KBiFe2O5 was investigated by degradation of methylene blue under visible light irradiation at different pH. The degradation rate constant was found to be 0.031min(-1) at a pH of 11.

Item Type: Journal Article
Additional Information: copyright for this article belongs to SPRINGER
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 14 Aug 2019 11:58
Last Modified: 14 Aug 2019 11:58
URI: http://eprints.iisc.ac.in/id/eprint/63192

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