Sonocatalytic degradation of tetracycline hydrochloride with CoFe2O4/g-C3N4 composite

Charge transfer in TiO2-based photocatalysis: fundamental mechanisms to material strategies

“…Moreover, when metal sulphides are used as H 2 generators combined with O 2 generators to form a Z-scheme system, the metal ions of the ionic redox shuttle strongly adsorb on the surface of the metal sulphides due to their low solubilities, resulting in the photocorrosion of the photocatalyst. 228,229 Therefore, solid-state mediators urgently need to be developed to alleviate the shortcomings associated with ionic redox shuttles. The introduction of solid charge mediators such as noble metals, reduced graphene, carbon, and indium-doped SnO 2 has resulted in superior activities than ionic redox mediators, which can be easily recovered and restrict the back reaction.…”

“…[53][54][55] Also, single photocatalysts are associated with many issues including limited visible light absorption and rapid charge recombination, and therefore, binary and ternary nanocomposites have been tested to realize greater visible light absorption and extend charge separation to achieve the required efficiencies. [56][57][58][59][60] Consequently, the dream of full usage of solar energy in green technologies is far away given that the introduction of dopants in parent semiconductors and applying binary and ternary nanocomposite systems also induce instability in the parent semiconductors. Therefore, more work is required in this field to prevent the slow and toxic pollution of Earth by properly reducing the greenhouse effect to achieve a more sustainable environment.…”

Biogenic Preparation of ZnO Nanostructures Using Leafy Spinach Extract for High-Performance Photodegradation of Methylene Blue under the Illumination of Natural Sunlight

“…Research on the proposed project aims at enhancing photocatalysis through the development of new classes of materials or the modification of surfaces. Therefore, a great deal of research has been conducted regarding the development of active photocatalytic materials [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. In comparison to other metal oxide semiconductors, titanium dioxide (TiO 2 ) is effective in removing dyes from water effluents, but it has been well-explored to synthesize inexpensive ZnO photocatalysts for removing synthetic organic dyes from aqueous solutions [ 32 , 33 , 34 ].…”

Titanium‐based MOFs‐derived Cabon‐supported Photocatalysts for the Efficient Degradation of Tetracycline

“…The combination of many metal ferrites and C 3 N 4 semiconductors is an excellent way to prepare photocatalysts. NiFe 2 O 4 /g‐C 3 N 4 , [6] prepared by compounding nickel ferrite with g‐C 3 N 4 , and CoFe 2 O 4 /g‐C 3 N 4 , [7] prepared by coupling CoFe 2 O 4 with g‐C 3 N 4 , can significantly expand the visible light response range and improve the carrier separation rate, thereby enhancing the photocatalytic activity to degrade tetracycline efficiently. In addition, small‐sized nanocatalysts also have good degradation effects on the photocatalytic degradation of pollutants.…”

“…In addition, using MOFs as precursors after controlled calcination, MOFs‐derived materials with larger specific surface area and smaller pore diameter can be obtained [19] . Kai et al, [20] synthesised an organic/inorganic hybrid composite catalyst by coupling Fe 3 O 4 @MIL‐100(Fe)(FM) with nano‐ZnS by solvothermal evaporation. After further optimisation of the reaction conditions, the prepared photocatalyst can remove 78.25 % of antibiotics in 20 min.…”