| Photocatalytic treatment of synthetic wastewater containing 2,4 dichlorophenol on TiO2-Cu2O nanocomposite |
| Paper ID : 1125-UFGNSM-FULL (R1) |
| Authors: |
|
Alireza Gharaee *1, Azadeh Ebrahimian Pirbazari2, Ziba Khodaee3 12nd unit, No 521, saligheh Dead end, saadi ave, Rasht, Guilan, Iran (P.O Box: 41349-35561) 2Assistant professor, Fouman Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 43515-1155, Fouman 43516-66456, Iran 3Assistant Professor, University of Applied Science and Technology, P.O.Box 41635-3697, Guilan, Iran |
| Abstract: |
| The removal of hazardous organic pollutants has become necessary and important for environmental safety because they are carcinogenic. For example, 2,4-dichlorophenol (2,4 DCP)may cause some pathological symptoms and changes human endocrine systems.Organic contaminants removal processes involves biological processes, adsorption, Ion-exchange and advanced oxidation processes. Advanced oxidation processes can be used in standard tempreture and pressure.The photocatalytic treatment particularly using TiO2 semiconductor is one of the advanced oxidation processes that has special place in the destruction of toxic compounds due to its unique features.Cu2O has been proved to be a good prometer to hybridize with TiO2.In this work,TiO2-Cu2O was synthesized by a simple method of impregnation-calcination and pure TiO2 was synthesized for control experiments.The synthesized samples were characterized by XRD, FESEM/EDX,Elemental mapping, DRS techniques.The XRD results showed the prepared samples including 100% anatase phase.Also,we calculated the crystal size and cell parameters for the synthesized samples.The crystal size of TiO2 is in the range of 7-8 nm in the synthesized samples.The band gap energy of pure TiO2 and TiO2-Cu2O was calculated from DRS spectra.We obtained the band gap energy 3.074 and 3.066 eV for pure TiO2 and TiO2-Cu2O respectively,these results confirmed that Cu2O semiconductor is present on the surface of TiO2 nanoparticles.The EDX/mapping elemental results showed the presence and homogeneous distribution of Ti,O and Cu atoms in the synthesized samples.The performance of the synthesized samples was studied for photocatalytic treatment of synethic waste water containing 2,4 DCP under UV irradiation and visible light.TiO2-Cu2O nanocomposite showed a higher activity for treatment of 2,4 DCP under visible light compared to pure TiO2. |
| Keywords: |
| Photocatalytic treatment, TiO2, Cu2O, 2,4-dichlorophenol, impregnation-calcination |
| Status : Paper Accepted (Oral Presentation) |
