Effect of bismuth doping on the ZnO nanocomposite material and study of its photocatalytic activity under UV-light

Visible light driven degradation of methylene blue dye using Ag3PO4

“…In addition, valence band holes are responsible to form OH radicals as shown in Eq. (6)[46].Furthermore, various forms of active oxygen such as O 2 are produced from following processes which may be responsible for degradation of MB dye[45].…”

Catalytic activity of bismuth doped zinc aluminate nanoparticles towards environmental remediation

“…Higher the quantity of the catalyst, the more the surfaces are provided for the catalytic activity [48]. From Table 2 congo red respectively due to some inter-band formation or heterojunction formation which inhibits the electron-hole recombination [50,51].…”

Hazardous o-toluidine mineralization by photocatalytic bismuth doped ZnO slurries

“…The best performances for nanosized ZnO can be reached either modifying the strategy of synthesis 14 or doping the material with different species, including transition metals (Mn, Cu) but also rare earth elements (La, Er) 15,16 . Also bismuth has been tested as dopant, proving its ability to shift the adsorption edge of ZnO (reducing the band gap of the material) to lower energy, exploiting solar light and modifying the separation rate of photoinduced charge carriers [17][18][19] . Bismuth is a great alternative to noble metals since it is cheaper, non-toxic and environmentally friendly material; besides, it is also able to favour trapping of photo-generated electrons, reducing the rate of recombination processes between electrons and holes 20-22 . In the present paper a study on both bare (a commercial oxide available by Sigma Aldrich) and bismuth doped ZnO nanopowders (obtained by impregnation of the commercial one with Bi/Zn molar ratios in the range 0.01-0.03) was performed with the aim of photodegrading o-toluidine.…”