Photocatalytic and biocidal activities of ZnTiO2 oxynitride heterojunction with MOF-5 and g-C3N4: A case study for textile wastewater treatment under direct sunlight
dc.Affiliation | October University for modern sciences and Arts (MSA) | |
dc.contributor.author | Younis, S.A | |
dc.contributor.author | Serp, P | |
dc.contributor.author | Nassar, H.N | |
dc.date.accessioned | 2020-12-05T10:30:32Z | |
dc.date.available | 2020-12-05T10:30:32Z | |
dc.date.issued | 44153 | |
dc.description | Scopus | en_US |
dc.description.abstract | The work aimed to synthesize three heterojunction photocatalysts (Eg = 2.65–2.78 eV) via in-situ encapsulation of 5% zinc doped titanium oxynitride (Zn0.05TiOxNy) catalyst into MOF-5 and bulk (BCN)/sulfur-doped (SCN) g-C3N4 supports using a microwave method. The prepared photocatalysts were characterized and utilized to purify textile industrial wastewater from the organic dye (e.g., methylene blue, MB) and microbial (e.g., E. coli, S. aureus, and C. albicans) contaminants under dark, visible, and solar lights. The output data confirmed the higher activity of Zn0.05TiOxNy@SCN and Zn0.05TiOxNy@MOF-5 for photo-induced microbial growth inactivation (> 90%) under visible light, with photo-biocidal efficiency of 0.91–1.69 mCFU/Einstein. Such a phenomenon is ascribed to the synergism between the high antimicrobial capacity of supports and photoactivity of Zn0.05TiOxNy. Also, Zn0.05TiOxNy@SCN exhibited far superiority to mineralize MB dye (Kphoto of 2.73 × 10−2 min−1) under direct sunlight due to its high photonic (ζ% of 4.4–8.3%)/quantum (QE of 0.56–0.54%) efficiencies for the generation of hydroxyl and superoxide (–•O2/•OH) oxidative species. As a practical case study, all heterojunction photocatalysts also demonstrated high-performance stability (5 cycles) for real textile wastewater treatment under sunlight (efficiency = 76.1–84.6%). | en_US |
dc.description.sponsorship | The French and Egyptian Governments supported this work through a co-financed fellowship granted by the French Embassy in Egypt (Institut Français d′Egypte, IFE) and the Science and Technology Development Fund (STDF), funded project (IFE-STDF No. 26470). The authors are appreciative to the Egyptian Petroleum Research Institute (EPRI) Laboratories for providing the required analytical techniques used in this study. The authors are also grateful to David Neumeyer at the Centre d′Élaboration de Matériaux et d′Etudes Structurales (CEMES-CNRS) for providing the optical analysis support. | en_US |
dc.identifier.issn | 3043894 | |
dc.identifier.other | 10.1016/j.jhazmat.2020.124562 | |
dc.identifier.uri | https://qrgo.page.link/5F9C1 | |
dc.language.iso | en_US | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.relation.ispartofseries | Journal of Hazardous Materials;2020, Article number 124562 | |
dc.subject | Zinc-titanium oxynitride | en_US |
dc.subject | Metal-organic framework | en_US |
dc.subject | Carbon nitrideTextile | en_US |
dc.subject | wastewater treatment | en_US |
dc.subject | Biocidal activity | en_US |
dc.title | Photocatalytic and biocidal activities of ZnTiO2 oxynitride heterojunction with MOF-5 and g-C3N4: A case study for textile wastewater treatment under direct sunlight | en_US |
dc.type | Article | en_US |
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