An interesting Eu,F-codoped BiVO4 microsphere with enhanced photocatalytic performance

Fabrication of Co3+ and B co-doping BiVO4 with improved photocatalytic performance for organic degradation

“…3 (e) shows the V 2p XPS spectra of pure BiVO4, B-BiVO4, and 0.5Co-B-BiVO4. The V 2p3/2 signals have peaks at Eb = 516.3 eV for BiVO4, Eb = 516.5 eV for B-BiVO4, and Eb = 516.7 eV for 0.5Co-B-BiVO4, which correspond the V 5+ [7].The peaks at binding energies of 529.6 eV for pure BiVO4, 529.6 eV for the B-BiVO4, and 529.8 eV 0.5Co-B-BiVO4 correspond to the O1s, as shown in Fig. 3(f).…”

“…It has been found that the photocatalytic activity of BiVO4 is determined by its crystal phase. BiVO4 with a monoclinic scheelite structure can show photocatalytic properties and is commonly used as a photocatalyst in water splitting and oxidative decomposition of organic contaminants under visible light irradiation [6][7][8]. The photocatalytic activity of pure BiVO4 still needs improvement due to its high rate of photogenerated electron-hole pair recombination.…”

“…b) shows the Bi 4f high-resolution XPS scan spectrum of pure BiVO4, B-BiVO4 and 0.3 B-0.5Co-BiVO4; the binding energies of Bi 4f appear at 159.1~159.5 eV and 164.4 ~165.2 eV for Bi 4f7/2 and Bi 4f5/2, respectively, which are characteristic of the Bi 3+ species[2][3][4][5][6][7]. The B 1s XPS spectra of the B-doped and B-Co codoped samples are shown inFig.…”

Synergistic Effects of Ag Nanoparticles/BiV1-xMoxO4 with Enhanced Photocatalytic Activity

“…Due to its visible photocatalytic activity, wide bandgap of 2.42 eV, high stability, and non-toxicity, bismuth vanadate (BiVO 4 ) is a promising n-type semiconductor photocatalyst [19][20][21]. However, its resulting carrier transfer efficiency is relatively poor, leading to the recombination of photogenerated electrons and holes, which severely limits the photocatalytic performance of BiVO 4 .…”

“…However, its resulting carrier transfer efficiency is relatively poor, leading to the recombination of photogenerated electrons and holes, which severely limits the photocatalytic performance of BiVO 4 . Various studies have assessed BiVO 4 modifications [20,[22][23][24], and substitution or metal doping on BiVO 4 has been shown as the most efficient method to change its carrier transport efficiency. Metal element doping introduces new defects or charges in the crystal lattice [25], influencing the motion of electrons and the creation of holes under light irradiation [26,27].…”