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Chemical doping of metal oxide nanomaterials: Characterization of their physical chemical properties,Used
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Photocatalysis is considered by many as the most promising solution for energy and environment problems. Among all the photocatalysts available, titanium dioxide remains one of the most studied for decades. Reducing its bandgap via doping is crucial to harvest visiblelight, which accounts for 48% of the total solar energy. In addition, it is very important to keep the particle size small to avoid recombination of the photogenerated electrons and holes. In this book, nanoscaled metal and / or nonmetal elements have been used as dopants to modify the electronic structure of TiO2. Xray diffraction patterns (XRD), Raman spectroscopy, UVVis diffuse reflectance spectroscopy (UVDRS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Xray photoelectron spectroscopy (XPS) have been used to obtain detailed information of the crystal structure, lightabsorbing property, organic remains, particle appearance, size distribution and elemental compositions, respectively. Preliminary data indicates that the electronic structure of TiO2 has been effectively reduced to render visiblelight reactivity.
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