Synthesis, physical and electrochemical properties of the spinel CoFe2O4: Application to the photocatalytic hydrogen production

Green catalyst of cobalt ferrite magnetic nanoparticles using petai peel extract for the synthesis of thiazolidinedione-based chalcone 4H-thiopyran as an antioxidant

“…This statement is consistent with the results of Benlembarek et al (2022), which suggests that the semiconductor band gap is 1.27 eV. 65…”

Preparation and spectroscopic study of nanosized aluminate spinels Al2XO4 (X = Cd, Ni and Co) synthesized by solution combustion technique

“…The Al-Al length, in the spinel is greater that the inter-ionic distance of orbital overlap for itinerant electrons and the Al 2 CoO 4 exhibits a semiconducting behavior [37].…”

Poly Meta-Aminophenol (PmAP) as a Solid-State Electron Mediator in the Z-Scheme, Ag3PO4/CoFe2O4 Heterojunction: Mineralization of Highly Concentrated Bisphenol-A and Reactive Dyes Water Pollutants

“…CoFe 2 O 4 (CFO), being a magnetic iron-based semiconductor oxide with high chemical stability, low toxicity, and high coercivity, has garnered significant interest in the field of photocatalysis . Many review articles have been published focusing on its augmented activity in wastewater treatment and H 2 production from water. − The potential of CoFe 2 O 4 in H 2 evolution reactions via water splitting, superconductivity, photocatalysis, and lithium-ion batteries has been explored. , Use of the CoFe 2 O 4, neat or in association with a cocatalyst/noble metals for H 2 production has been reported by several workers. − In contrast, Ag 3 PO 4 is a superior visible light active catalyst that has 90% quantum efficiency in oxygen evolution reactions. − It has dozens of times more potential than the commercial TiO 2 and BiVO 4 catalysts in terms of dye degradation reactions. − The combination of both CFO and Ag 3 PO 4 showed exceptional photoactivity in dye removal applications but failed with highly concentrated dye solutions and recyclability points. − Many authors designed the Z-scheme catalyst based on Ag 3 PO 4 /CoFe 2 O 4 with and without a mediator or electron shuttle. − Herein for the first time, PmAP was used in this heterojunction as a mediator to yield a Z-scheme heterojunction with augmented activity for remediation of highly concentrated aquatic pollutants within minutes under visible light illumination. Establishing a dynamic equilibrium among the mediator’s electron-donating and electron-accepting capabilities is the difficult part of creating a solid-state electron mediator as it keeps the mediator mostly unaltered during the process. , An ongoing electron flow between the source and target photocatalysts is also dependent upon the photocatalyst mediator photocatalyst contact interface.…”

“…Poly meta-aminophenol (PmAP), a derivative of polyaniline (PANI) with two potentially active functional groups (−NH 2 and −OH) possesses good adsorption capacity in comparison to PANI with relatively good conductivity, electrochemical recurrence, and stability in water-based solutions. , Many studies have been published on the use of polyaniline in photocatalysis, − but there is no report available to date on the use of PmAP in a photocatalytic system as far as we are aware. In this work, the PmAP was introduced in a Z-scheme catalytic system with H 2 evolving (CoFe 2 O 4 ) and O 2 evolving (Ag 3 PO 4 ) cocatalysts.…”