Photocatalytic Degradation of Phenol in Water Solution by Phosphotungstic Acid on TiO2/ZnO Nanoparticles as supporting solid
Marzieh Nasiriyan
1
(Department of Environment)
معصومه طباطبایی
2
(ریاست دانشگاه آزاد اسلامی واحد یزد / مدرس)
Seyed Abolghasem Mirhoseini
3
(Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran)
کلید واژه: Phosphotungstic Acid, photocatalytic activity, solid supporting, Phenol pollutant ,
چکیده مقاله :
In this research, a Keggin-type heteropolyoxometalate (H3PWO12O40) supported on TiO2/ZnO nanoparticles were used for degradation of phenol under UV light and H2O2 was used as oxidant. Based on the results, heterogenization of H3PWO12O40 on TiO2/ZnO could be improved photocatalytic process and could be considered an appropriate heterogonous photocatalyst in the removing of phenol from aqueous solutions in the presence of hydrogen peroxide. Degradation of phenol in the presence of the H3PWO12O40/ZnO could lead to the disappearance of approximately 95% of phenol under UV irradiation and optimized condition. In the same experiment H3PWO12O40 as homogenous catalyst, removed 70% phenol and heterogenous TiO2/ZnO catalyst removed less than 70% phenol from water solution in the same condition.
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