المستخلص: |
The effect of phosphomolybdic acid (H3PMo12O40; PMo12) on structural, surface, morphology, optical as well as photoluminescence and photocatalytic properties of Tio2 prepared by sol-gel method under template-free condition has rarely been reported. The present work has found that the content of different PMO12 manipulated of Tio2 crystal phase (rutile/anatase ratio). The TEM analysis confirms the formation of titania mesoporous in the presence of PM012. The increasing of PMoi2 contents significantly increased the Tio2 surface area and decreased of crystal size as a result of introducing of kegging unit. The PMO12contents were not only controlled the crystal and surface properties of Tio2 nanoparticles but also were controlled the optical properties also. The UV- Vis light reflectance spectra and PL emission of PMO12 doped Tio2 were blue shifted in as compared to pure Tio2 nanoparticles. The photoluminescence measurements for pure and PMO12doped Tio2 confirm that PMO12 significantly decrease the electron-hole recombination chance in the obtained Tio2. The photo-oxidative activity of different PMO12 doped Tio2 mesoporous was evaluated using new fluorescent probe and dye methods. Moreover, the effect of different calcination temperatures and time during preparation on physicochemical properties of PMo2 doped Tio2 were also studied.
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