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The rare-earth (RE) elements [Holmium (Ho) and Ytterbium (Yb)] doped vanadiumpentoxide (V2O5) with a series of doping concentrations (1 mol.%, 3 mol.%, and5 mol.%) have been successfully synthesized using environment-friendly facilehydrothermal method. The effect of RE ions on the photocatalytic efficiency ofdoped V2O5 has also been analyzed. The stable orthorhombic crystal structure ofdoped V2O5 confirms by the X-ray diffraction with no secondary phase, andhigh-stressed conditions are generated for the 3 mol.%. The crystallite size,strain, and dislocation density are calculated to perceive the doping effect onthe bare V2O5. The optical characteristics have been measured using UV-visspectroscopy. The absorptions are found to be increased with increasing dopingconcentrations; however, the bandgap remains in the visible range. Thephotocatalytic properties are examined for the compounds with varying pH, andit is observed that higher efficiency is exhibited for the pH 7 and catalystconcentration 500 ppm. The highest degradation efficiency is found to be 93%and 95% for the 3 mol.% of Ho and Yb-doped V2O5 samples within 2 hours,respectively. It is elucidated that the RE ions significantly impact thecatalytic behavior of V2O5, and the mechanism behind these extraordinaryefficiencies has been explained thoroughly.

Enhancement of photocatalytic performance of V2O5 by rare-earth ions doping, synthesized by facile hydrothermal technique