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Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode

In this study, a ternary z-scheme heterojunction of Bi(2)WO(6) with carbon nanoparticles and TiO(2) nanotube arrays was used to remove paracetamol from water by photoelectrocatalysis. The materials and z-scheme electrode were characterised using X-ray diffraction (XRD), field emission scanning elect...

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Autores principales: Mahhumane, Nondumiso, Cele, Leskey M., Muzenda, Charles, Nkwachukwu, Oluchi V., Koiki, Babatunde A., Arotiba, Omotayo A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9323740/
https://www.ncbi.nlm.nih.gov/pubmed/35889691
http://dx.doi.org/10.3390/nano12142467
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author Mahhumane, Nondumiso
Cele, Leskey M.
Muzenda, Charles
Nkwachukwu, Oluchi V.
Koiki, Babatunde A.
Arotiba, Omotayo A.
author_facet Mahhumane, Nondumiso
Cele, Leskey M.
Muzenda, Charles
Nkwachukwu, Oluchi V.
Koiki, Babatunde A.
Arotiba, Omotayo A.
author_sort Mahhumane, Nondumiso
collection PubMed
description In this study, a ternary z-scheme heterojunction of Bi(2)WO(6) with carbon nanoparticles and TiO(2) nanotube arrays was used to remove paracetamol from water by photoelectrocatalysis. The materials and z-scheme electrode were characterised using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), EDS mapping, ultraviolet diffuse reflection spectroscopy (UV-DRS), photocurrent measurement, electrochemical impedance spectroscopy (EIS), uv-vis spectroscopy and total organic carbon measurement (TOC). The effect of parameters such as current density and pH were studied. At optimal conditions, the electrode was applied for photoelectrocatalytic degradation of paracetamol, which gave a degradation efficiency of 84% within 180 min. The total organic carbon removal percentage obtained when using this electrode was 72%. Scavenger studies revealed that the holes played a crucial role during the photoelectrocatalytic degradation of paracetamol. The electrode showed high stability and reusability therefore suggesting that the z-scheme Bi(2)WO(6)-CNP-TiO(2) nanotube arrays electrode is an efficient photoanode for the degradation of pharmaceuticals in wastewater.
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spelling pubmed-93237402022-07-27 Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode Mahhumane, Nondumiso Cele, Leskey M. Muzenda, Charles Nkwachukwu, Oluchi V. Koiki, Babatunde A. Arotiba, Omotayo A. Nanomaterials (Basel) Article In this study, a ternary z-scheme heterojunction of Bi(2)WO(6) with carbon nanoparticles and TiO(2) nanotube arrays was used to remove paracetamol from water by photoelectrocatalysis. The materials and z-scheme electrode were characterised using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), EDS mapping, ultraviolet diffuse reflection spectroscopy (UV-DRS), photocurrent measurement, electrochemical impedance spectroscopy (EIS), uv-vis spectroscopy and total organic carbon measurement (TOC). The effect of parameters such as current density and pH were studied. At optimal conditions, the electrode was applied for photoelectrocatalytic degradation of paracetamol, which gave a degradation efficiency of 84% within 180 min. The total organic carbon removal percentage obtained when using this electrode was 72%. Scavenger studies revealed that the holes played a crucial role during the photoelectrocatalytic degradation of paracetamol. The electrode showed high stability and reusability therefore suggesting that the z-scheme Bi(2)WO(6)-CNP-TiO(2) nanotube arrays electrode is an efficient photoanode for the degradation of pharmaceuticals in wastewater. MDPI 2022-07-19 /pmc/articles/PMC9323740/ /pubmed/35889691 http://dx.doi.org/10.3390/nano12142467 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mahhumane, Nondumiso
Cele, Leskey M.
Muzenda, Charles
Nkwachukwu, Oluchi V.
Koiki, Babatunde A.
Arotiba, Omotayo A.
Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode
title Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode
title_full Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode
title_fullStr Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode
title_full_unstemmed Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode
title_short Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi(2)WO(6) with Carbon Nanoparticles and TiO(2) Nanotube Arrays Electrode
title_sort enhanced visible light-driven photoelectrocatalytic degradation of paracetamol at a ternary z-scheme heterojunction of bi(2)wo(6) with carbon nanoparticles and tio(2) nanotube arrays electrode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9323740/
https://www.ncbi.nlm.nih.gov/pubmed/35889691
http://dx.doi.org/10.3390/nano12142467
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