An advanced oxidation process by photoexcited heterogeneous sodium decatungstate for the degradation of drugs present in aqueous environment

Photoelectrocatalytic degradation of emerging contaminants at WO3/BiVO4 photoanodes in aqueous solution

“…44 Finally, spin trap EPR spectra recorded with BiVO4 powder revealed no presence of OH radical intermediates (Figure S8 hyperfine coupling constant with the unpaired electron. 45,46 This observation is consistent with Saison et al 1 who did not practically observe the photo-production of OH radicals with BiVO4 despite very intense UV illumination and the fact that the estimated valence band edge of BiVO4 should make OH radical formation weakly exoergonic; kinetic barriers may thus render this reaction prohibitively slow compared to other water oxidation pathways.…”

Molybdenum Isomorphously Substituted Decatungstates as Robust and Renewable Photocatalysts for Visible Light‐Driven Oxidation of Hydrocarbons by Molecular Oxygen

“…[1,42] The following re-oxidation of the reduced DT to its starting state (catalysis cycling) and the formation of the oxygenated products can be achieved under the participation of O 2 . [44][45][46][47][48][49] The incorporating Mo, as supported by our present studies, plays key roles in improving the redox capacity and visible light harvesting efficiency of DT anion, especially in enhancing the photo-excited quantum efficiency (probability and lifetime). As a result, the visible-light-catalytic performance of Mo-DT can be improved significantly.…”

Tetra-n-butylammonium decatungstate supported on Fe3O4 nanoparticles: a novel nanocatalyst for green synthesis of nitroso compounds

“…2 Decatungstate (DT) is a catalyst commonly used for organic selective synthesis, especially in photo-catalyzed oxidation. 12 A variety of methods have been developed to prepare heterogeneous DT photocatalysts. [12][13][14][15][16] Considering the selection of the support material, a previous study proved that the interaction exists between iron oxide and tungstate oxide.…”

“…12 A variety of methods have been developed to prepare heterogeneous DT photocatalysts. [12][13][14][15][16] Considering the selection of the support material, a previous study proved that the interaction exists between iron oxide and tungstate oxide. 17 Rakshit et al proved that tungsten forms innersphere-type bonds on hematite surfaces using in situ ATR-FTIR.…”