| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Fe$^{3+}$-Doped Anatase TiO$_{2}$ Study Prepared by New Sol-Gel Precursors |
| Bahram Khoshnevisan1, Mohammad Bagher Marami1, Majid Farahmandjou2** |
1Department of Physics, Faculty of Science, University of Kashan, Kashan, Islamic Republic of Iran
2Departments of Physics, Varamin Pishva Branch, Islamis Azad University, Varamin, Iran
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| Cite this article: |
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Bahram Khoshnevisan, Mohammad Bagher Marami, Majid Farahmandjou 2018 Chin. Phys. Lett. 35 027501 |
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Abstract Fe$_{x}$Ti$_{1-x}$O$_{2}$ ($x=0.00$, 0.05, 0.10) nanocomposites are synthesized using a sol-gel method involving an ethanol solvent in the presence of ethylene glycol as the stabilizer, and acetic acid as the chemical reagent. Their structural and optical analyses are studied to reveal their physicochemical properties. Using the x-ray diffractometer (XRD) analysis, the size of the nanoparticles (NPs) is found to be 18–32 nm, where the size of the NPs decreases down to 18 nm when Fe impurity of up to 10% is added, whereas their structure remains unchanged. The results also indicate that the structure of the NPs is tetragonal in the anatase phase. The Fourier transform infrared spectroscopy analysis suggests the presence of a vibration bond (Ti–O) in the sample. The photoluminescence analysis indicates that the diffusion of Fe$^{3+}$ ions into the TiO$_{2}$ matrix results in a decreasing electron–hole recombination, and increases the photocatalytic properties, where the best efficiency appears at an impurity of 10%. The UV-diffuse reflection spectroscopy analysis indicates that with the elevation of iron impurity, the band gap value decreases from 3.47 eV for the pure sample to 2.95 eV for the 10 mol% Fe-doped TiO$_{2}$ NPs.
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Received: 04 November 2017
Published: 23 January 2018
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| PACS: |
75.50.Tt
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(Fine-particle systems; nanocrystalline materials)
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75.75.Cd
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(Fabrication of magnetic nanostructures)
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81.16.-c
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(Methods of micro- and nanofabrication and processing)
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81.07.-b
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(Nanoscale materials and structures: fabrication and characterization)
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73.63.Bd
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(Nanocrystalline materials)
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