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Zr 4+ doped nano titania was prepared by sol–gel method using titanium(IV) isopropoxide and zirconium nitrate as precursors. The materials were characterized by XRD, BET, UV–vis, FT-IR, SEM-EDX and TEM techniques. The nanoparticles of pure TiO 2 contained both anatase and rutile phases together but Zr 4+ doped TiO 2 gave anatase phase only. The framework substitution...
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