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Influence of parameters and radical scavengers on the visible-light-induced degradation of ciprofloxacin in ZnO/SnS 2 nanocomposite suspension: Identification of transformation products


Citation

Makama, Abdullahi B. and Ali, Salmiaton and Choong, Thomas Shean Yaw and Abdul Hamid, Mohamad Rezi and Abdullah, Norhafizah and Saion, Elias (2020) Influence of parameters and radical scavengers on the visible-light-induced degradation of ciprofloxacin in ZnO/SnS 2 nanocomposite suspension: Identification of transformation products. Chemosphere, 253. art. no. 126689. pp. 1-9. ISSN 0045-6535

Abstract

Removal of ciprofloxacin (CIP) pollutant from wastewater using conventional process is particularly challenging due to poor removal efficiency. In this work, CIP was photocatalytically degraded using a porous ZnO/SnS2 photocatalyst prepared via microwaves. The influence of process parameters (e.g., pH, catalyst mass and initial CIP concentration) and radical scavengers on visible-light induced degradation of CIP on the catalyst was investigated. From the study, it was found that visible-light induced degradation of CIP on ZnO/SnS2 is a surface-mediated process and the reaction kinetics followed the Langmuir-Hinshelwood first-order kinetics. It was found that the optimum condition for CIP degradation was at pH of 6.1 and catalyst dosage of 500 mg L−1. Higher catalyst dosage however led to a decline in reaction rate due to light scattering effect and reduction in light penetration.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.1016/j.chemosphere.2020.126689
Publisher: Elsevier
Keywords: Visible-light; Ciprofloxacin; Photocatalysis; ZnO/SnS2; Transformation products
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 17 Sep 2021 03:05
Last Modified: 17 Sep 2021 03:05
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.chemosphere.2020.126689
URI: http://psasir.upm.edu.my/id/eprint/89374
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