| Photocatalytic removal of p-nitrophenol from artificial wastewater by Ternary magneticTiO2/Fe3O4/MWCNTs nanocomposites |
| Paper ID : 1152-UFGNSM-FULL |
| Authors: |
|
Sara Pakdaman *1, Azadeh Ebrahimian Pirbazari2, Neda Gilani3 1shamsipour bldg - shahid beheshti blvd - fouman city - Gilan province -
postal code:4351914969 2Assistant professor, Fouman Faculty of Engineering, College of Engineering, University of Tehran, Iran 3Assistant professor, Fouman Faculty of Engineering, College of Engineering, University of Tehran |
| Abstract: |
| Environmental pollution is a major concern in our society and numerous researches are undertaken to treat water, air, and soil pollution. Pollutants can be aromatic compounds, pesticides, chlorinated compounds, heavy metals, or petroleum hydrocarbons. As an important organic chemical, p-nitrophenol (PNP) is widely employed as raw materials or intermediates in the preparation of explosives, preservatives, and dyes. Semiconductor photocatalysis has emerged as a versatile technique for the removal of pollutants from water because of its desirable properties such as low cost, high efficiency, complete mineralization of various organic compounds, and no secondary pollution .In this paper, we have synthesized ternary nanocomposites, TiO2/Fe3O4/multiwalled carbon nanotubes (MWCNTs) containing different amounts of MWCNTs and characterized by XRD, FTIR and SEM/EDX to reveal the crystal structure, morphology and property of the nanocomposites. The photocatalytic performance of the synthesized samples was evaluated by photocatalytic removal of PNP under visible light. Morphology and structural characterization showed that TiO2 nanoparticles (in pure anatase phase) with the size of about 8.56-14.38 nm and Fe3O4 nanoparticles (in cubic spinel phase) with the size of about 12.20 nm are present in nanocomposites. We obtained 33% and ~50% removal of PNP in the presence of pure TiO2 and TiO2/Fe3O4/MWCNTs nanocomposite containing 0.12g MWCNTs under visible light respectively. These enhanced and unique properties of TiO2/Fe3O4/MWCNTs nanocomposite can be ascribed to the synergistic effect among three components. |
| Keywords: |
| Fe3O4, p-nitrophenol, MWCNTs, TiO2, Removal |
| Status : Paper Accepted (Poster Presentation) |
