Effects of Fe Doping on the Structural, Optical, and Magnetic Properties of TiO$_{2}$ NanoparticlesEffects of Fe Doping on the Structural, Optical, and Magnetic Properties of TiO$_{2}$ Nanoparticles

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 Author Thu, Dang Xuan ♦ Trung, Vu Quoc ♦ Nghia, Nguyen Manh ♦ Khang, Nguyen Cao ♦ Lam, Tran Dai Source SpringerLink Content type Text Publisher Springer US File Format PDF Copyright Year ©2016 Language English
 Subject Keyword Fe-doped TiO$_{2}$ ♦ magnetic properties ♦ photocatalytic activity ♦ Optical and Electronic Materials ♦ Characterization and Evaluation of Materials ♦ Electronics and Microelectronics, Instrumentation ♦ Solid State Physics Abstract Fe-doped TiO$_{2}$ nanoparticles have been prepared by the hydrolysis method. The effects of Fe doping on the structural, optical, and magnetic properties of the Ti$_{1−x }$Fe$_{ x }$O$_{2}$ (x = 0.00, 0.03, 0.06, 0.10, 0.13) materials were thoroughly investigated by a combination of various methods, including transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) analysis, x-ray diffraction (XRD) analysis, ultraviolet–visible (UV–Vis) reflectance spectroscopy, Raman spectroscopy, and vibrating-sample magnetometry. Analysis of the TEM and XRD measurements showed that the resulting powders had nanoscale particle size. The Fe-doped samples were found to be paramagnetic at room temperature (by magnetization measurements), with Fe acting as substitutional impurity at Ti sites in the anatase TiO$_{2}$ phase. Substitution of Fe at Ti sites was also confirmed by Raman spectra. The paramagnetic nature of the Ti$_{1−x }$Fe$_{ x }$O$_{2}$ samples was further investigated using density functional theory calculations of their electronic band structure and density of states. Finally, the photocatalytic activity of the Fe-doped TiO$_{2}$ samples was studied by investigating their photocatalytic decomposition of methylene blue. ISSN 03615235 Age Range 18 to 22 years ♦ above 22 year Educational Use Research Education Level UG and PG Learning Resource Type Article Publisher Date 2016-08-15 Publisher Place New York e-ISSN 1543186X Journal Journal of Electronic Materials Volume Number 45 Issue Number 11 Page Count 5 Starting Page 6033 Ending Page 6037