Observation of low- and high-temperature CuFe2O4 phase at 1100 °C: The influence of Fe3+ ions on CuFe2O4 structural transformation

Recent Advances in Synthesis and Applications of MFe2O4 (M = Co, Cu, Mn, Ni, Zn) Nanoparticles

“…NiFe 2 O 4 was successfully used also as a catalyst in photocatalytic water oxidation using [Ru(bpy) 3 ] 2+ as a photosensitizer and S 2 O 8 2− as a sacrificial oxidant [119]. CuFe 2 O 4 has been used in industrial processes as a catalyst in both organic and inorganic reactions [146]. The main advantages of CuFe 2 O 4 NPs are simple work-up and low-cost procedure, mild reaction conditions, reusable catalyst, high yield, short reaction times, no isomerization during the reaction [38].…”

“…In all cases, the nano-catalyst can be easily recovered and re-used [9,38]. CuFe 2 O 4 NPs were also employed as reusable heterogeneous initiator in the synthesis of 1,4-dihydropyridines, of α-aminonitriles and conversion of CO to CO 2 [38,146]. The successful use of CuFe 2 O 4 NPs as catalyst for the ligand free N-arylation of N-heterocycles and for the cross-coupling of aryl halides with diphenyl diselenide to produce diaryl selenides was also reported [147,148].…”

“…Moreover, CuFe 2 O 4 is considered a prospective material for the water decontamination by photoelectrochemical processes. In combination with a suitable adsorbent, CuFe 2 O 4 can be applied as a cost-effective adsorbent for removal of MB from water and wastewater [146]. The atrazine degradation by a three-dimensional electrochemical process using CuFe 2 O 4 NPs as electrodes and catalyst for the activation of persulfate for were also reported [149].…”

“…The ZnFe 2 O 4 nanomaterials also display good antibacterial activity against Lactobacillus, Bacillus cereus (Gram-positive), Escherichia coli, Aeromonas hydrophila and Vibrio harveyi (Gram-negative) bacterial strains [145,146,155]. The low crystallite size and surface area play a critical role in the antimicrobial activity against tested pathogenic microbes.…”

Solvothermal Etching-Assisted Phase and Morphology Tailoring in Highly Porous CuFe2O4 Nanoflake Photocathodes for Solar Water Splitting

“…Apart from solar energy, hydrogen energy is considered to be the second most important source of clean, renewable energy. , Photocatalysis and photoelectrochemical water electrolysis can provide an efficient and economical pathway toward solar hydrogen generation from water while leaving behind a low carbon footprint. Since the discovery of semiconductor photolysis of water using TiO 2 by Fujishima and Honda, research on efficient nanostructured semiconductors has reached widespread attention in the scientific community, especially in the past few decades, after the advent of advanced and improved cutting-edge nanofabrication techniques. − Transition-metal oxides have seen an upsurge in this research field, primarily because of their desirable properties, such as low cost, abundance, stability, ease of synthesis, and impressive photocatalytic performance. − An extensive range of metal oxides has been explored over the years, such as TiO 2 , SnO 2 , WO 3 , Fe 2 O 3 , and many synthetic strategies have been employed, such as morphology control, doping, design of efficient heterojunctions, and crystal facet engineering, to improve photoelectrochemical performance. ,− In this field of work, spinels have gained a strong foothold, because of their high stability on alkaline media, desirable bandgap, low cost, efficient electron transport, and photoexcited charge carrier generation properties. − Many spinel ferrites have been explored for photoelectrochemical and photocatalytic water splitting in recent times, the most popular being NiFe 2 O 4 , CoFe 2 O 4 , and CuFe 2 O 4 . − Dillert et al and Zhao et al have beautifully reviewed the application of ferrites in photocatalysis and photoelectrochemical water splitting and emphasized structural properties and experimental investigations of ferrites. Yin et al showed the effect of transition-metal doping in hematite nanoparticles to form spinel ferrites and found an enhancement in charge carrier density and photoelectrochemical performance.…”