Investigations on the Enhanced Dye Degradation Activity of Heterogeneous BiFeO-GdFeO Nanocomposite Photocatalyst

Overview

Journal Heliyon

Specialty Social Sciences

Date 2019 Jun 29

PMID 31249888

Citations 5

Authors

Yathavan Subramanian

Venkatapathy Ramasamy

R J Karthikeyan

Gokul Raj Srinivasan

Durairajan Arulmozhi

Ramesh Kumar Gubendiran

Mohan Sriramalu

Affiliations

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Abstract

Perovskite types of nanocomposites of BiFeO-GdFeO (BFO-GFO) has been synthesized using sol-gel route for the first time. The nanocomposite powders were characterized by powder X-Ray diffraction (PXRD) to confirm the existence of mixed crystallographic phases. EDX analysis on nanocomposites estimates the composition of individual element present in BFO-GFO matrix. The induced strain upon loading GdFeO(GFO) in BiFeO (BFO) matrix has been computed with the aid of Williamson -Hall (W-H) plot. Surface morphologies of nanocomposite powders has been studied using Field Emission Scanning Electron Microscope FESEM) images. The observed changes in the band gap energies of nanocomposite powders due to the inclusion of GFO has been ascertained from the tauc plots. PL emission of BFO upon loading GFO found to have detected in the IR region due to defect level transition. Finally, the methylene blue dye (MB) degradation characteristics of BFO, GFO and the nanocomposite powders of BFO-GFO have also been studied. The overall results obtained has been discussed in detail.

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