Cobalt ferrite nanoparticles for the preferential oxidation of CO

Topotactic Synthesis of Porous Cobalt Ferrite Platelets from a Layered Double Hydroxide Precursor and Their Application in Oxidation Catalysis

“…Cobalt ferrite, CoFe 2 O 4 , is a highly interesting compound due its ferrimagnetic properties, (electro‐)chemical reactivity, and catalytic activity . For example, recent reports have highlighted the potential of cobalt ferrite as a component in multiferroic ceramics, as an electrode material in lithium batteries, and as a water oxidation catalyst in electrolysis .…”

“…To demonstrate that the unique structural properties of the ex‐LDH CoFe 2 O 4 are related to interesting chemical properties, we here briefly introduce two application examples to compare the new material to commercial CoFe 2 O 4 (purchased from Sigma–Aldrich). Cobalt ferrite is known as an oxidation catalyst showing high activity, for example, in the electrocatalytic oxygen evolution reaction (OER), in the gas phase oxidation of CO, or in the selective oxidation of terpenes . We have used the ex‐LDH CoFe 2 O 4 and commercial CoFe 2 O 4 in the temperature‐programmed oxidation of 2‐propanol and in the OER.…”

The effect of agarose content on the morphology, phase evolution, and magnetic properties of CoFe2O4 nanoparticles prepared by sol‐gel autocombustion method

“…The CoFe 2 O 4 NPs have been synthesized by various methods including coprecipitation, microemulsion, mechanical alloying, hydrothermal, and sol‐gel autocombustion . Among these methods, sol‐gel method offers a flexible approach to obtaining a diverse range of materials without use of expensive processing technologies, such as vacuum methods .…”

“…7-10 Based on these excellent properties, CoFe 2 O 4 is used in high frequency magnets, microwave absorbers, magnetic catalysis, magnetic bulk cores, magnetic resonance imaging, and drug delivery. 8,11 The CoFe 2 O 4 NPs have been synthesized by various methods including coprecipitation, [12][13][14][15][16] microemulsion, [17][18][19][20] mechanical alloying, [21][22][23] hydrothermal, [24][25][26][27][28][29][30] and sol-gel autocombustion. [31][32][33][34][35] Among these methods, sol-gel method offers a flexible approach to obtaining a diverse range of materials without use of expensive processing technologies, such as vacuum methods.…”

Synthesis of cobalt ferrite nanoparticles by constant pH co-precipitation and their high catalytic activity in CO oxidation

“…6,7 Due to its remarkable chemical stability, mechanical hardness and high activity, it is also interesting as an oxidation catalyst. [8][9][10][11] A number of chemical methods such as co-precipitation, 12,13 sol-gel, 14 hydrothermal, 15 micro-emulsion, 16,17 spray pyrolysis, 18 reverse micelles, 13 sonochemical, 19 and organic precursor decomposition 20 are available for the synthesis of ferrite nanoparticles. It was generally found that the size and shape and the physical properties of nanoparticles prepared using these techniques are highly dependent on the method of synthesis and the nature of the surfactant used.…”