Abstract
The polymorphic crystallization and optical properties of Ag-doped TiO2 nanoparticles have been investigated. Sol–gel method has been used to prepare anatase, rutile, and the anatase–rutile mixed phase of TiO2 nanoparticles by Ag doping on Ti(4+) sites. The doped TiO2 nanoparticles exhibit different phase of TiO2 for the different concentration of dopants. The Ag-doping affects the luminescence and morphological properties of TiO2 nanoparticles. The anatase to rutile phase transformation temperature (ART) has reduced significantly. The Ag doping in TiO2 lattice gives a large red shift for a particular concentration of Ag dopants.
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