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Title:Photoelectrochemical activation of peroxymonosulfate using Sn-doped ▫$α-Fe_2O_3$▫ thin film for degradation of anti-inflammatory pharmaceutical drug
Authors:ID Machreki, Manel (Author)
ID Tyuliev, Georgi (Author)
ID Žigon, Dušan (Author)
ID Guo, Qian (Author)
ID Chouki, Takwa (Author)
ID Belén Jorge Sobrido, Ana (Author)
ID Dimitrov, Stoichko (Author)
ID Emin, Saim (Author)
Files:.pdf 1-s2.0-S1010603023005919-main.pdf (2,44 MB)
MD5: D8857A66548AD0944804BCAD182EADB1
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Introduction of oxygen vacancies (OVs) has been investigated as a promising way to improve the electrical and catalytic characteristics of a hematite (α-Fe2O3) based photoelectrode. In this work, we develop a novel method for preparing porous Sn-doped α-Fe2O3 (Sn:Fe2O3) thin films with intrinsic OVs. The procedure included spin- coating an iron precursor onto a fluorine-doped tin oxide (FTO) substrate, followed by thermal treatment at elevated temperatures. The influence of Sn dopant on the optoelectronic properties of α-Fe2O3 was demonstrated by X-ray photoelectron spectroscopy and photoelectrochemical (PEC) measurements. The combined effect of OVs and Sn doping was found to play a synergistic role in reducing the charge recombination’s. The Sn:Fe2O3 photoanodes were used as a dual catalyst to oxidise water and break down an anti-inflammatory drug called 2-(4- isobutylphenyl)propanoic acid (IBPA). The Sn:Fe2O3 thin film with a 30-minute heat treatment time displayed the highest incident photon-to-current efficiency. For the first time, Sn:Fe2O3 thin films were utilised in the effective PEC degradation of IBPA employing peroxymonosulfate (PMS) under visible light illumination. The hydroxyl radicals (•OH), singlet oxygen (1O2), photogenerated holes (h+), and sulfate radicals (SO4 • ) were discovered to be the main reactive species during PEC degradation. IBPA degradation and the formation of new compounds were verified using liquid chromatography-mass spectrometry. The Lepidium sativum L phytotoxicity test reveals that PEC-treated wastewater with IBPA exhibits decreased toxicity.
Keywords:Sn-doped Fe2O3, oxygen vacancies, photoelectrochemical degradation, 2-(4-isobutylphenyl)propanoic acid, peroxymonosulfate
Publication date:01.01.2024
Year of publishing:2024
Number of pages:str. 1-10
Numbering:Vol 446, [article no.] ǂ115126
PID:20.500.12556/RUNG-8747 New window
COBISS.SI-ID:180408835 New window
ISSN on article:1010-6030
DOI:10.1016/j.jphotochem.2023.115126 New window
Publication date in RUNG:10.01.2024
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Record is a part of a journal

Title:Journal of photochemistry and photobiology. Chemistry
Shortened title:J. photochem. photobiol.,A Chem.
Publisher:Elsevier Sequoia
COBISS.SI-ID:356162 New window


Licensing start date:01.01.2024

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:13.12.2023