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Metal doping and sensitization of photocatalyst have been jointly exploited as a novel strategy to improve photocatalytic activity under visible light irradiation. 5, 10, 15, 20-tetrakis (4-chlorophenyl) porphyrin-Cu (II) (CuPp) is chosen to sensitize La-doped TiO 2 (La–TiO 2 ) nanocrystalline. La doping results in smaller crystallite and larger specific surface area. La doping or...
Chromium doped titanium dioxide (TiO 2 ) nanocrystal films with various doping concentration have been successfully prepared by a sol–gel dip-coating process. These films have been characterized by XRD, XPS, AFM, and UV–vis absorption spectroscopy. It is found that Cr doping can effectively reduce the transition temperature of anatase to rutile phase as well as the grain size. The absorption...
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