Fabrication of double-sided comb-like F/Ce co-doped BiVO4 micro/nanostructures for enhanced photocatalytic degradation and water oxidation

Structure, morphology and photocatalytic performance of europium-doped bismuth vanadate

“…All samples have a broad emission peak near 547 nm, which is due to the recombination of electrons formed in the V 3d band and holes in the O 2p band. 10 The luminescence signal of the EBVO- x sample near 621 nm is actually a characteristic luminescence peak of the trivalent Eu ion. It has a 5D 0 → 7F 3 transition to Eu 3+ , which implies the effective doping of Eu 3+ .…”

“…The average grain size ( D ) of the sample was calculated using the following formula: 10 D = 0.89 γ /( β cos θ )where γ is the X-ray wavelength, which is 1.54056 Å, β is the measured sample diffraction peak half-height width (FWHM) and θ is the Bragg angle. The calculated results are given in Table 1.…”

“…These results show that ˙O 2 − and h + are the main active substances influencing the degradation of MB over EBVO-5 and the actions of the three radicals are in the order ˙O 2 − > h + > ˙OH. 10…”

Structure, morphology and photocatalytic performance of europium and fluorine co-doped bismuth vanadate

“…The average grain size ( D ) of the sample is calculated using the following formula: 15 D = 0.89 γ /( β cos θ )where γ is the X-ray wavelength, β is the full width at half maximum (FWHM) of the diffraction peak of the sample, and θ is the Bragg angle. The calculation results are shown in Table 1.…”

“…Compared with BiVO 4 and B-BiVO 4 , the photocatalytic activity of La-B co-doped BiVO 4 was significantly enhanced due to the synergistic effect of the co-doped ions. Abbood et al 15 prepared a novel monoclinic BiVO 4 (BFCe) codoped with fluorine and cerium, in which F À and Ce 3+ doping replaced the O 2 À and Bi 3+ sites, respectively, which played a synergistic effect and promoted carrier separation and made BFCe exhibit a more excellent photocatalytic effect. Based on this, in this paper, Eu/F co-doped bismuth vanadate samples with different doping ratios were prepared by the hydrothermal method.…”