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The bandgap of mesoporous nanocrystalline TiO2 was modified by wet impregnation with Li, Mg, Pd, and Sr metal ion salt solutions. X-ray Diffraction (XRD), UV–Vis Diffuse Reflectance Spectrophotometer (DRS), Scanning Electron Microscope (SEM), and BET techniques were used for the characterization of TiO2 samples. DRS data showed highest blue shift of 21nm and lowest of 9nm for Pd and Li ion impregnated...
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