Enhancement of Eu and Ce doped TiO2 thin films photoactivity: Application on Amido Black photodegradation

Synthesis, characterization and photocatalytic properties of nanostructured lanthanide doped β-NaYF4/TiO2 composite films

“…This behavior may be interpreted considering the recent results reported for the Eu 3+ doped TiO 2 systems. It has been proposed that Eu 3+ doping successfully enhances the photocatalytic activity of TiO 2 , by reducing the recombination of electron/hole pairs by trapping photogenerated electrons 35 , 45 , 46 . In the present case, it seems reasonable that the Eu 3+ doped NaYF 4 system plays a similar role, decreasing the electron–hole recombination of the TiO 2 anatase component under UV irradiation, thus enhancing the photocatalytic activity.…”

ZnSe and CdS Co‐Sensitized TiO2Nanorod Arrays as Photoanodes for Bias‐Free Solar Hydrogen Evolution

“…As explained in the chronoamperometric results, the higher built‐in potential at no applied bias state indicates the lesser accumulation of carriers in the respective (conduction, valence) band edges. The photo potential increases the carrier conduction through the semiconductor and electrolyte interface which is a primary requirement of the PEC hydrogen evolution process using photoanode [41,42] . The in‐built and decay of photo‐potential has been qualitatively measured for the TZC5, TZC10, TZC15, TZC20 and TZC25 photoanodes under illumination as shown in (Figure 9).…”

“…The photo potential increases the carrier conduction through the semiconductor and electrolyte interface which is a primary requirement of the PEC hydrogen evolution process using photoanode. [41,42] The in-built and decay of photo-potential has been qualitatively measured for the TZC5, TZC10, TZC15, TZC20 and TZC25 photoanodes under illumination as shown in (Figure 9). The cathodic side shifting of OCPV hints at strong evidence of wavering of bands at the photoelectrode-electrolyte interface which is always very high for heterojunction semiconductor-type photoanodes.…”