Rapid photodegradation and detection of zolpidem over β-SnWO4 and α-SnWO4 nanoparticles: optimization and mechanism

We reported the tin (II) tungstate nanoparticles as the photocatalyst and sensor modifier that were synthesized via chemical precipitation reaction and optimized thru the Taguchi design method. The method predicted the best synthesis conditions that led to smaller particles and desired morphologies....

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Bibliographic Details
Published in:Environmental science and pollution research international 2021-02, Vol.28 (5), p.5430-5442
Main Authors: Mirsadeghi, Somayeh, Zandavar, Hamed, Tooski, Hamed Farhad, Rahimi, Mostafa, Sohouli, Esmail, Rahimi-Nasrabadi, Mehdi, Ganjali, Mohammad Reza, Pourmortazavi, Seied Mahdi
Format: Article
Language:English
Subjects:
Aquatic Pollution
Aqueous solutions
Atmospheric Protection/Air Quality Control/Air Pollution
Chemical precipitation
Chemical synthesis
Design optimization
Dyes
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Irradiation
Light irradiation
Morphology
Nanoparticles
Photocatalysis
Photodegradation
Research Article
Taguchi methods
Tin
Ultraviolet radiation
Waste Water Technology
Water Management
Water Pollution Control
Zolpidem
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Summary:We reported the tin (II) tungstate nanoparticles as the photocatalyst and sensor modifier that were synthesized via chemical precipitation reaction and optimized thru the Taguchi design method. The method predicted the best synthesis conditions that led to smaller particles and desired morphologies. Different techniques were used to characterize the chemical structure, morphology, and purity of the nanoparticles. The photocatalytic behavior of different crystalline forms of the SnWO 4 nanoparticles ( α and β ) was considered by photodegradation of methylene orange and zolpidem under UV light irradiation, while the average size of β -SnWO 4 and α -SnWO 4 nanoparticles prepared in optimum conditions is about 17 nm and 20 nm, respectively. Efficiencies of degradation of methyl orange and zolpidem on β -SnWO 4 , in the presence of UV irradiation, were 93% and 98% and in the presence of α -SnWO 4 were 73% and 82% after 2100 s, respectively. Voltammetric sensing of zolpidem was designed by modification of carbon paste electrode via β -SnWO 4 nanoparticles and investigated for determination of the drug in aqueous solution.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-020-10820-1