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AuthorIrfan, Muhammad
AuthorTahir, Noor
AuthorZahid, Muhammad
AuthorNoreen, Saima
AuthorYaseen, Muhammad
AuthorShahbaz, Muhammad
AuthorMustafa, Ghulam
AuthorShakoor, Rana A.
AuthorShahid, Imran
Available date2024-08-14T06:25:17Z
Publication Date2023
Publication NameMolecules
ResourceScopus
ISSN14203049
URIhttp://dx.doi.org/10.3390/molecules28207022
URIhttp://hdl.handle.net/10576/57711
AbstractRapid industrialization and urbanization are the two significant issues causing environmental pollution. The polluted water from various industries contains refractory organic materials such as dyes. Heterogeneous photocatalysis using semiconductor metal oxides is an effective remediation technique for wastewater treatment. In this research, we used a co-precipitation-assisted hydrothermal method to synthesize a novel I-FeWO4/GO sunlight-active nanocomposite. Introducing dopant reductive iodine species improved the catalytic activity of FeWO4/GO. I− ions improved the catalytic performance of H2O2 by doping into FeWO4/GO composite. Due to I− doping and the introduction of graphene as a support medium, enhanced charge separation and transfer were observed, which is crucial for efficient heterogeneous surface reactions. Various techniques, like FTIR, SEM-EDX, XRD, and UV–Vis spectroscopy, were used to characterize composites. The Tauc plot method was used to calculate pristine and iodine-doped FeWO4/GO bandgap. Iodine doping reduced the bandgap from 2.8 eV to 2.6 eV. The degradation of methylene blue (MB) was evaluated by optimizing various parameters like catalyst concentration, oxidant dose, pH, and time. The optimum conditions for photocatalysts where maximum degradation occurred were pH = 7 for both FeWO4/GO and I-FeWO4/GO; oxidant dose = 9 mM and 7 mM for FeWO4/GO and I-FeWO4/GO; and catalyst concentration = 30 mg and 35 mg/100 mL for FeWO4/GO and I-FeWO4/GO; the optimum time was 120 min. Under these optimum conditions, FeWO4/GO and I-FeWO4/GO showed 92.0% and 97.0% degradation of MB dye.
SponsorOpen Access funding provided by the Qatar National Library, Doha Qatar.
Languageen
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
Subjecthalogenation
heterogeneous catalysis
iodine doping
methylene blue degradation
photo-Fenton
wastewater treatment
TitleThe Fabrication of Halogen-Doped FeWO4 Heterostructure Anchored over Graphene Oxide Nanosheets for the Sunlight-Driven Photocatalytic Degradation of Methylene Blue Dye
TypeArticle
Issue Number20
Volume Number28
dc.accessType Open Access


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