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Photocatalytic properties of TiO2 sol-gel modified nanocomposite films |
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| Authors: | Akbar Eshaghi Reza MozaffariniaMahmoud Pakshir Ameneh Eshaghi |
| Affiliation: | a Department of Materials Science and Engineering, Faculty of Engineering, Shiraz University, Shiraz, Iran b Faculty of Materials Science and Engineering, Maleke Ashtar University of Technology, Esfahan, Iran c IslamicAzad University, Sari, Iran |
| Abstract: | TiO2 nanocomposite films with different concentrations of TiO2 MT-150A nanoparticles were immobilized on glass substrates using a dip coating process. The crystalline structure and surface chemical state of nanocomposite film properties were examined by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The specific surface area and morphology of TiO2 MT-150A nanoparticles were evaluated by the BET method and Field Emission Scanning Electron Microscopy (FE-SEM). The photocatalytic activities of films were evaluated by the methyl orange decoloring rate. XPS measurements showed that the oxygen amount (%) was related to the film composition. The composite film with 10 g/L MT-150A loading yielded the highest amount of surface oxygen (26.82%) and TiO2 rutile showed the lowest amount of surface oxygen (13.67%) in the form of surface hydroxyl groups. The remaining oxygen was identified as lattice oxygen. In addition, the nanocomposite film with 10 g/L MT-150A loading yielded the highest photocatalytic activity. |
| Keywords: | A Sol-gel processes B Nanocomposites D TiO2 |
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