By-product distribution and cytotoxicity assessment of ZnO-assisted photocatalytic degradation of reactive blue 250 dye.

Autor: Bokhari TH; Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan., Naveed A; Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan., Khosa MK; Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan., Haq AU; Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan., Muneer M; Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan., Iqbal M; National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan., Mohammed OA; Department of Pharmacology, College of Medicine, University of Bisha, Bisha, 61922, Saudi Arabia., Doghish AS; Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo, 11829, Egypt.; Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt., Abdel-Reheim MA; Department of Pharmacology, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia.; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef 62521, Egypt., Iqbal M; School of Chemistry, University of the Punjab, Lahore 54590, Pakistan., Nazir A; Department of Chemistry, The University of Lahore, Lahore, Pakistan.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2024 Oct 23; Vol. 10 (22), pp. e39670. Date of Electronic Publication: 2024 Oct 23 (Print Publication: 2024).
DOI: 10.1016/j.heliyon.2024.e39670
Abstrakt: This research examined the effectiveness and feasibility of utilizing ultraviolet (UV) assisted photo-catalysis to treat wastewater effluents from textile production containing reactive blue 250 (RB 250) dye. Molecular oxygen and active species like O 2 •- , HO 2 • , H 2 O 2 and • OH play crucial roles in the degradation process. Additionally, the degradation of dyes is influenced by several factors, including dye concentration, duration of UV irradiation, pH levels, concentration of H 2 O 2 , and the catalyst. The concentration of H 2 O 2 and catalyst dose for the decolorization was studied at 0.6 mL and 0.5 g respectively. The discoloration was higher at low dye concentration, high H 2 O 2 concentration, acidic conditions and high catalyst concentration. The maximum degradation (97 %) of RB 250 dye was obtained in the presence of zinc oxide nanoparticles within 90 min. The extent of decolorization of the dye was determined by UV-Vis spectroscopy. Fourier transform infrared spectroscopy (FTIR) was employed to analyze the changes in functionalities after degradation. The disappearance of characteristic peaks associated with specific groups within the dye molecule confirmed the extensive degradation of RB 250 dye. LCMS analysis was conducted to examine the intermediates and a mechanistic degradation pathway was subsequently proposed. The cytotoxicity of the irradiated dye samples was evaluated through a hemolytic test both pre and post-treatment. The findings suggest that the UV/H 2 O 2 /ZnO treatment represents a promising approach for effectively degrading RB 250 dye.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 The Authors.)
Databáze: MEDLINE
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