Novel TiO₂/GO/CuFe₂O₄ nanocomposite: a magnetic, reusable and visible-light-driven photocatalyst for efficient photocatalytic removal of chlorinated pesticides from wastewater

Abstract

A TiO2/GO/CuFe2O4 heterostructure photocatalyst is fabricated by a simple and low cost ball milling pathway for enhancing the photocatalytic degradation of chlorinated pesticides under UV light irradiation.

Synthesis of CuFe2O4‐Ti and CuFe2O4‐Ti‐GO nanocomposite photocatalysts using green‐synthesized CuFe2O4: determination of photocatalytic activity, bacteria inactivation and antibiotic degradation potentials under visible light

“…Briefly, the increased adsorption capacity of GO‐based NCs (CFT‐GO %3–10% and CF ‐GO) in this study (see BET surface analysis results section above, and Fig. S4) are hypothesized to have caused limited adsorption and decomposition of H 2 O, hindering the formation of OH ∙ and O 2 ∙ species, which are reported to be the dominant oxidative species in the photocatalytic degradation mechanism of MB 68,72,73 …”

“…CFT‐GO may resctrict hole−electron recombination by trapping delocalized electrons. Briefly, the transfer of phot‐generated electron from CF spinel ferrite to Ti nanoparticles through the heterojunction and/or GO layer result gives rise to formation of ROS in the form OH ∙ and O 2 ∙ 68 . The PL exciton peak around 378 cm −1 is ascribed to the recombination of electron and hole.…”

“…• . 68 The PL exciton peak around 378 cm −1 is ascribed to the recombination of electron and hole. The relatively lower PL peaks (at broad green-red emission due to recombination of photogenerated electron-hole pairs) of CFT-GO 3% tend to decrease with increasing GO content, whereas the exciton peak around 378 cm −1 is higher compared to CFT 1%.…”

“…• species, which are reported to be the dominant oxidative species in the photocatalytic degradation mechanism of MB. 68,72,73 Recovery and reusability of NC photocatalysts The magnetically separated and recovered CFT %1 NC photocatalysts (following the regeneration procedure) were reused and subjected to four consecutive cycles of photocatalytic activity test. The activity of the photocatalyst decreased by <15%, as shown in Fig.…”

Synthesis of magnetic CuFe2O4/Fe2O3 core-shell materials and their application in photo-Fenton-like process with oxalic acid as a radical-producing source

“…On the other hand, it should be reminded that our catalysts did not display photocatalytic activities in the experimental conditions (using a 9 W Osram Dulux S lamp as visible light source and a 9 W Radium 78 lamp as UVA light source) although in some studies, the authors reported the photocatalytic activity of CuFe 2 O 4 materials. For these studies, the authors usually used a 500 W xenon lamp [Zhu et al 2013] or a 150 W xenon arc lamp [Ismael et al 2020]. Their capacity is much higher than that of our lamps (only 9 W).…”