Photocatalytic activity of synthetic ZnO/WO3 nanocomposites immobilized on a Y-zeolite in removal of gas-phase styrene
| Autor: | Hossein Ali Rangkooy, Davoud Afshar faroji, Fereshte Jahani, Mojtaba Nakhaei Pour |
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| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Materials science Health Toxicology and Mutagenesis Kinetics 02 engineering and technology 010501 environmental sciences 01 natural sciences Applied Microbiology and Biotechnology Catalysis Styrene chemistry.chemical_compound Adsorption 020401 chemical engineering Molecule 0204 chemical engineering Zeolite Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Nanocomposite Public Health Environmental and Occupational Health Pollution Chemical engineering chemistry Photocatalysis Research Article |
| Zdroj: | J Environ Health Sci Eng |
| ISSN: | 2052-336X |
| DOI: | 10.1007/s40201-020-00594-6 |
| Popis: | PURPOSE: The widespread use of styrene along with its harmful effects on human health has led to many studies on how to control and reduce its vapors in the workplace. In this study, efficient removal of styrene molecules in the gas phase was attempted by using Y-ZnO/WO(3) hybrid photocatalysts. METHODS: ZnO/WO(3) nanocomposites with different WO(3) Wt% were prepared and immobilized on Y-zeolite. The samples’ characteristics were evaluated using X-ray diffraction (XRD), energy dispersive X-ray spectrum (EDS), Brunauer-Emmet-Teller (BET) and field emission scanning electron microscopy (FESEM). RESULTS: The Y- ZnO/WO(3) catalyst exhibits an improved photocatalytic activity as compared to Y-ZnO and Y-zeolite alone. This higher photocatalytic activity of the ZnO/WO(3) supported on Y-zeolite can be attributed to a more efficient interaction of the ZnO/WO(3) with the zeolite leading to higher adsorption capacities. Results reveal that the photocatalyst was highly photoactive in mineralizing styrene. The high activity can be attributed to the synergetic effects of strong UV, ZnO/WO(3) nanocomposite and surface hydroxyl groups. The photocatalytic degradation reaction of styrene with the Y-ZnO/WO(3) follows Langmuir-Hinshelwood kinetics. CONCLUSIONS: The results of this study indicate that this photocatalyst is suitable for the removal of styrene under UV light. The highest removal efficiency achieved was with Y-ZnO/WO(3) at 2%. GRAPHICAL ABSTRACT: [Image: see text] |
| Databáze: | OpenAIRE |
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