Aluminum-Doped Cobalt Ferrite as an Efficient Photocatalyst for the Abatement of Methylene Blue

Abstract

The present study is aimed to access the photodegradation efficiency of methylene blue dye using CoFe2O4 and Co0.1Al0.03Fe0.17O0.4 nanoparticles. The synthesis of spinel ferrites nanoparticles was performed by a facile sol-gel method. The synthesized nanoparticles were characterized by FTIR, XRD, SEM, EDS, Nitrogen adsorption/desorption and UV–Visible spectroscopy. The XRD studies confirmed the spinel cubic structure of ferrite. It was also found that the crystallinity increases at an annealing temperature of 800 °C. The application of these nanoparticles for methylene blue’s photocatalytic degradation was explored and also the optimization of several parameters involving dye’s concentration, amount of catalyst and pH of the solution was done. Photocatalytic degradation of methylene blue showed that at pH 11, using 200 W visible light bulb and in 120 min; 93% methylene blue dye was degraded by using 0.1 g of Co0.1Al0.03Fe0.17O0.4.

Se-Doped Magnetic Co–Ni Spinel Ferrite Nanoparticles as Electrochemical Catalysts for Hydrogen Evolution

“…Such a rational catalyst design provided exceptional OER performance by demonstrating 50 mA/cm 2 at a low overpotential of 265 mV. Abbas et al worked on synthesizing Al 3+ -doped CoFe 2 O 4 NPs using the sol–gel method . The photodegradation efficiency of Al 3+ -doped cobalt ferrite was recorded to be 83% for a 120 min light illumination, which was much better than that of an undoped sample (58%).…”

Enhancing Li-ion capacity and rate capability in cation-defective vanadium ferrite aerogels via aluminum substitution

“…Similarly, enhancements in specic surface area have been noted with various aluminumsubstituted cobalt ferrites. [23][24][25] Scanning electron micrographs of calcined VFe 2 Ox and Al-VFe 2 Ox aerogels show that both oxides comprise highly porous and networked nanostructures (Fig. 2(a and b) and S2a, b †), but VFe 2 Ox has larger particles within its 3D solid network.…”

Review on cobalt ferrite as photo-Fenton catalysts for degradation of organic wastewater

“…In the study of aluminum-doped CoFe 2 O 4 catalytic degradation of MB, it was found that the microscopic morphology of the aluminum-doped catalyst was more uniform and ordered, and the specific surface area increased from 9.217 m 2 g −1 to 14.865 m 2 g −1 . 94 The lattice parameter decreases with Al insertion into the structure due to the replacement of the larger atomic Fe 3+ (0.67 Å) by the smaller atomic Al 3+ (0.51 Å). The final experiments show that Co 0.1 Al 0.03 Fe 0.17 O 0.4 has the highest photocatalytic activity.…”