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TiO2 doped with Cu2+ initiates the formation of brookite phase along with anatase. Doping of Cu2+ introduces structural defects into TiO2. The direct evidence is the low intense and broad diffraction peaks. Raman peaks of doped TiO2 are also broad and are blueshifted. Pure TiO2 exhibits an absorption in the UV region, the position of which is shifted towards the visible region on incorporation of...
TiO 2 nanoparticles acquire complete crystalline anatase phase on thermal treatment of as-prepared anatase TiO 2 at 450°C. Anatase-rutile mixed phase and rutile phase are achieved by annealing anatase TiO 2 at 700°C and 950°C respectively. The anatase-rutile mixed phase TiO 2 has 87.8% rutile phase. This signifies that the percentage of rutile...
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