Photocatalytic activity of synthetic ZnO/WO 3 nanocomposites immobilized on a Y-zeolite in removal of gas-phase styrene.

Autor: Rangkooy HA; Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.; Department of Occupational Health, Health Faculty, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran., Jahani F; Department of Occupational Health, Health Faculty, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.; Expert in Bushehr Petrochemical Compony, HSE Department, Asaluyeh, Iran., Afshar Faroji D; Department of Medicinal Chemistry, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran., Nakhaei Pour M; Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran.
Jazyk: angličtina
Zdroj: Journal of environmental health science & engineering [J Environ Health Sci Eng] 2021 Feb 22; Vol. 19 (1), pp. 181-191. Date of Electronic Publication: 2021 Feb 22 (Print Publication: 2021).
DOI: 10.1007/s40201-020-00594-6
Abstrakt: 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%.
Competing Interests: Conflict of interestNo.
(© Springer Nature Switzerland AG 2021.)
Databáze: MEDLINE
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