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Title:Preparation of porous [alpha]-Fe[sub]2O[sub]3 thin films for efficient photoelectrocatalytic degradation of basic blue 41 dye
Authors:Machreki, Manel (Author)
Chouki, Takwa (Author)
Martelanc, Mitja (Author)
Butinar, Lorena (Author)
Mozetič Vodopivec, Branka (Author)
Emin, Saim (Author)
Files:URL https://doi.org/10.1016/j.jece.2021.105495
 
Language:English
Work type:Unknown ()
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:A novel method was developed for the preparation of porous hematite (α-Fe2O3) thin films. First, a solution containing iron precursor was spin-coated on fluorine-doped tin oxide substrate and later short heat-treated at 750 °C. The prepared α-Fe2O3 thin films were applied as dual-function catalyst in photoelectrochemical (PEC) water oxidation and textile dye degradation studies. For the first time, α-Fe2O3 thin films were used in efficient PEC degradation of a textile dye (Basic Blue 41 – B41) using in-situ generated reactive chlorine species. In comparison with photocatalytic and electrocatalytic approaches, the PEC technique allows faster degradation of B41 dye at an applied bias potential of 1.5 V versus reversible hydrogen electrode and under visible light illumination. In the presence of Cl− using the PEC approach the degradation of B41 reaches 99.8%. High-performance liquid chromatography coupled with UV–VIS system confirmed the degradation of B41 dye using PEC. Gas-chromatography coupled to mass spectrometry was used to study the by-products obtained during PEC degradation. Chemical oxygen demand analyses confirmed that the mineralization level of B41 is in the order of 68%. The α-Fe2O3 films developed in this study give a higher level of PEC degradation efficiency compared to other iron oxide-based systems.
Keywords:thin films, photoelectrocatalysis, kinetics, visible light, degradation, textile dye
Year of publishing:2021
Number of pages:str. 1-12
Numbering:no. 4, Vol. 9
COBISS_ID:62466051 Link is opened in a new window
UDC:54
ISSN on article:2213-3437
URN:URN:SI:UNG:REP:GOVXBPCQ
DOI:10.1016/j.jece.2021.105495 Link is opened in a new window
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Record is a part of a journal

Title:Journal of environmental chemical engineering
Publisher:Elsevier B.V.
ISSN:2213-3437
COBISS.SI-ID:519695385 New window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Funding Programme:Sofinanciranje znanstvenoraziskovalnega sodelovanja med RS in Izraelom
Project no.:(NI-0002
Name:A MULTIDISCIPLINARY APPROACH TO THE TREATMENT AND APPLICATION OF WASTE WATER TO AGRICULTURE
Acronym:
Project ID:info:eu-repo/grantAgreement/ARRS/Sofinanciranje%20znanstvenoraziskovalnega%20sodelovanja%20med%20RS%20in%20Izraelom/%28NI-0002

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