Photocatalytic Degradation of Phenol in Water Solution by Phosphotungstic Acid on TiO2/ZnO Nanoparticles as Supporting Solid
محورهای موضوعی : نانوMarzieh Nasiriyan 1 , معصومه طباطبایی 2 , Seyed Abolghasem Mirhoseini 3
1 - Department of Environment
2 - ریاست دانشگاه آزاد اسلامی واحد یزد / مدرس
3 - Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran
کلید واژه: Phosphotungstic Acid, photocatalytic activity, solid supporting, Phenol pollutant,
چکیده مقاله :
A Keggin-type heteropolyoxometalate (H3PW12O40) supported on TiO2/ZnO nanoparticles was used for the degradation of phenol under UV light and H2O2 as oxidant. Based on the results, heterogenization of H3PW12O40 on TiO2/ZnO could improve the photocatalytic process and could be considered an appropriate heterogonous photocatalyst in the removal of phenol from aqueous solutions in the presence of hydrogen peroxide. Degradation of phenol in the presence of the H3PW12O40/TiO2/ZnO could lead to the disappearance of approximately 95% of phenol under UV irradiation and optimized condition. In the same experiment H3PW12O40 as a homogenous catalyst, removed 70% phenol and the heterogeneous TiO2/ZnO catalyst removed less than 70% phenol from the water solution in the same conditions.
A Keggin-type heteropolyoxometalate (H3PW12O40) supported on TiO2/ZnO nanoparticles was used for the degradation of phenol under UV light and H2O2 as oxidant. Based on the results, heterogenization of H3PW12O40 on TiO2/ZnO could improve the photocatalytic process and could be considered an appropriate heterogonous photocatalyst in the removal of phenol from aqueous solutions in the presence of hydrogen peroxide. Degradation of phenol in the presence of the H3PW12O40/TiO2/ZnO could lead to the disappearance of approximately 95% of phenol under UV irradiation and optimized condition. In the same experiment H3PW12O40 as a homogenous catalyst, removed 70% phenol and the heterogeneous TiO2/ZnO catalyst removed less than 70% phenol from the water solution in the same conditions.
