NDLI: 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

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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

Content Provider	MDPI
Author	Mahhumane, Nondumiso Cele, Leskey M. Muzenda, Charles Nkwachukwu, Oluchi V. Koiki, Babatunde A. Arotiba, Omotayo A.
Copyright Year	2022
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.
Starting Page	2467
e-ISSN	20794991
DOI	10.3390/nano12142467
Journal	Nanomaterials
Issue Number	14
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-07-19
Access Restriction	Open
Subject Keyword	Nanomaterials Environmental Engineering Environmental Sciences Photoelectrocatalytic Degradation Paracetamol Z-scheme Heterojunction Bismuth Tungstate Carbon Nanoparticle Titania Nanotube Array Water Treatment
Content Type	Text
Resource Type	Article

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