High performance B doped BiVO4 photocatalyst with visible light response by citric acid complex method

Structural, electronic and optical features of molybdenum-doped bismuth vanadium oxide

“…Substitutional Mo doped BiVO 4 synthesized by solid state reaction has shown remarkable enhancement in water oxidation and degradation of organic pollutants as reported by Yao et al [23]. So far, metal doped BiVO 4 have been synthesized by several chemical routes, such as co-precipitation [24], sol-gel [25,26] and the impregnation method [14]. However, the sol-gel process is one of the most widely used methods because of easy synthesis, low processing temperature, good control of the composition and better homogeneity of the final solids.…”

Synthesis of Co doped BiVO 4 with enhanced visible-light photocatalytic activities

“…The absorption onsets of the samples were measured by linear extrapolation from the inflection point of the curve to the baseline, reaching a quantitative estimate of the band gap energy [21] . The band gap energy values (Eg, eV) for different samples were calculated using the function (αhν) 2 = A(hν -Eg) n , where A, α and hν present constant, absorption coefficient and photon energy, respectively [22] .…”

Enhanced photocatalytic activity of S-doped BiVO4photocatalysts

“…Recently, Li et al 26 reported the fabrication of F-doped BiVO 4 by the two-step hydrothermal method, and showed that an appropriate amount of F À ions introduced into BiVO 4 crystal lattices can effectively hinder the recombination of photogenerated electron-hole pairs. Similarly, Wang et al 27 found that doping B into BiVO 4 using citric acid complex method could prolong the lifetimes of photo-excited electrons and holes and enhance the photocatalytic activity. Therefore, doping catalysts with nonmetal elements could be an efficient way of enhancing the photocatalytic activity.…”