High efficient catalytic degradation of tetracycline and ibuprofen using visible light driven novel Cu/Bi2Ti2O7/rGO nanocomposite:: Kinetics, intermediates and mechanism

S.  Shanavas; A.  Priyadharsan; Evangelos Gkanas; R.  Acevedo; P.M.  Anbarasan

doi:10.1016/j.jiec.2019.01.008

High efficient catalytic degradation of tetracycline and ibuprofen using visible light driven novel Cu/Bi2Ti2O7/rGO nanocomposite: Kinetics, intermediates and mechanism

S. Shanavas, A. Priyadharsan, Evangelos Gkanas, R. Acevedo, P.M. Anbarasan

Research output: Contribution to journal › Article › peer-review

73 Citations (Scopus)

111 Downloads (Pure)

Abstract

The photoexcited charge carriers trapping was an effective way to generate a large number of active species like O ₂ ^•− and ^[rad]OH radicals to oxidize pharmaceutical molecules. In ternary Cu/Bi ₂Ti ₂O ₇/rGO composite Cu nanoparticles and rGO sheets act as charge carrier trappers and the suppression of e ⁻-h ⁺ pair recombination was confirmed by Photoluminescence analysis. The Cu/Bi ₂Ti ₂O ₇/rGO composite exhibited higher photocatalytic degradation efficiency for degradation of ibuprofen and tetracycline molecules under visible light irradiation within 90 min. Therefore, this research designates a promising strategy for higher photoexcited charge carrier trapping photocatalyst design for efficient degradation of pharmaceutical molecules.

Original language	English
Pages (from-to)	512-528
Number of pages	17
Journal	Journal of Industrial and Engineering Chemistry
Volume	72
Early online date	14 Jan 2019
DOIs	https://doi.org/10.1016/j.jiec.2019.01.008
Publication status	Published - 25 Apr 2019

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Industrial and Engineering Chemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Industrial and Engineering Chemistry, [72], (2019) DOI: 10.1016/j.jiec.2019.01.008

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

Charge carrier trappers
Hydrothermal
Nanocomposite
Pharmaceutical contamination
Visible light-driven

ASJC Scopus subject areas

Chemical Engineering(all)

Access to Document

10.1016/j.jiec.2019.01.008

Post-PrintAccepted author manuscript, 3.12 MBLicence: CC BY-NC-ND

Cite this

High efficient catalytic degradation of tetracycline and ibuprofen using visible light driven novel Cu/Bi2Ti2O7/rGO nanocomposite: Kinetics, intermediates and mechanism. / Shanavas, S.; Priyadharsan, A. ; Gkanas, Evangelos et al.
In: Journal of Industrial and Engineering Chemistry, Vol. 72, 25.04.2019, p. 512-528.

Research output: Contribution to journal › Article › peer-review

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abstract = "The photoexcited charge carriers trapping was an effective way to generate a large number of active species like O 2 •− and [rad]OH radicals to oxidize pharmaceutical molecules. In ternary Cu/Bi 2Ti 2O 7/rGO composite Cu nanoparticles and rGO sheets act as charge carrier trappers and the suppression of e −-h + pair recombination was confirmed by Photoluminescence analysis. The Cu/Bi 2Ti 2O 7/rGO composite exhibited higher photocatalytic degradation efficiency for degradation of ibuprofen and tetracycline molecules under visible light irradiation within 90 min. Therefore, this research designates a promising strategy for higher photoexcited charge carrier trapping photocatalyst design for efficient degradation of pharmaceutical molecules. ",

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