Effect of iron doped titanium oxide encapsulated in alginate on photocatalytic activity for the removal of dye pollutants

Abstract

Iron oxide/titania oxide are encapsulated in alginate biopolymer. These bio-nanocomposites are suitable for the photodegradation of dissimilar organic pollutants under UV irradiation as well as visible light.

Solar‐light‐driven ZnO/biochar treatment of pesticides contaminated wastewater: A practical and computational study

“…TiO 2 was 1.2 wt% useful for photocatalytic degradation 30 . The Fe 2 O 3 , CaO, and ZnO, values were 12.7, 9.9, and 0.41 wt%, respectively, in the BC, which have a positive effect on the photocatalytic process and minimize the required catalyst concentration to accomplish the degradation process 18,31 . The specific surface area, pore volume, and pore size of the BC were 88.7 m 2 /g, 0.09 cm 3 /g, and 3.32 nm, respectively.…”

“…16 The wide bandgap and fast charge carriers recombination of commonly used semiconductors (TiO 2 and ZnO) are major limitations preventing the photocatalysis process from being used in practice. 17,18 Zinc oxide, on the other hand, is distinguished by its stability, low cost, and abundance. 16 To overcome the limitations associated with ZnO, iron was doped in the lattice of ZnO to decrease the recombination rate, as iron could act as an electron trap.…”

“…16 To overcome the limitations associated with ZnO, iron was doped in the lattice of ZnO to decrease the recombination rate, as iron could act as an electron trap. 19 Chkirida et al 18 reported enhancing the photodegradation performance of ZnO doped with iron compared to pure ZnO for the degradation of MB. 18 Despite the high level of interest in water contamination, the problem of solid waste management has intrigued much interest due to the serious environmental consequences.…”

“…19 Chkirida et al 18 reported enhancing the photodegradation performance of ZnO doped with iron compared to pure ZnO for the degradation of MB. 18 Despite the high level of interest in water contamination, the problem of solid waste management has intrigued much interest due to the serious environmental consequences. After anaerobic digestion of substrates, large amounts of sludge can be produced 20 ; thus, managing them is crucial.…”

“…In comparison to other AOPs, the photocatalysis process stands out due to its sustainability (use of solar light), green nature (no secondary pollutant), and high degradation performance 16 . The wide bandgap and fast charge carriers recombination of commonly used semiconductors (TiO 2 and ZnO) are major limitations preventing the photocatalysis process from being used in practice 17,18 …”