Synthesis of Nanosized Cesium Ferrite by Precursor and Combustion Method: A Comparative Study

Abstract

Thermolysis of cesium hexa(carboxylato)ferrate(III) precursors, Cs 3 [Fe(L) 6 ].xH 2 O (L = formate, acetate, propionate, butyrate), has been carried out in flowing air atmosphere from ambient temperature to 1000°C. Various physico-chemical techniques, that is, simultaneous TG-DTG-DTA, XRD, TEM, IR, Mössbauer spectroscopy, have been employed to characterize the intermediates and end products. After dehydration, the anhydrous precursors undergo exothermic decomposition to yield various intermediates, that is, cesium carbonate/propionate/butyrate and a-Fe 2 O 3 . A subsequent decomposition of these intermediates leads to the formation of cesium ferrite above 800°C. Similar ferrite has been prepared by the combustion method at comparatively lower temperature (600°C) and in less time than that of conventional ceramic method.

Gold-selenide quantum dots supported onto cesium ferrite nanocomposites for the efficient degradation of rhodamine B

“…Further, the successful synthesis of pure Cs 2 Fe 2 O 4 NC was verified. These peaks are well agreed with previously reported literature [ 34 , 53 ]. On the other hand, the peak patterns of 5.0 wt.…”

“…Also, XRD patterns for pure Cs 2 Fe 2 O 4 and 5.0 wt.% AuSe QDs/Cs 2 Fe 2 O 4 NCs were displayed in Figure 1 (b and c). The patterns of Bragg reflection of the Cs 2 Fe 2 O 4 NC observed at 2ϴ angle equal 18.30, 38.26, 43.36, 48.21, 54.95, 63.06 and 68.4° [ 34 , 53 ] . The patterns suggested that the Cs 2 Fe 2 O 4 peaks have a crystalline nature referring to different reflections of the cubic Cs 2 Fe 2 O 4 phase.…”

New insights into the thermal behavior and decomposition of sodium propionate

“…They are due to two successive solid-solid transitions followed by melting. with Fe in view of ferrite compounds manufacture and the evolved gaseous products were not analyzed [28,29].…”

Fabrication and characterization of rubidium ferrites by the solution‐based combustion method using diverse organic fuels

“…XRD powder pattern (Figure 1) of the RbFeO 2 ferrite obtained resembles to that of cubic alkali metal ferrites already reported. [23][24][25] The diffraction peaks (2 2 0), (3 1 1), (4 0 0), (4 2 2), (5 1 1), and (4 4 0) reveal the formation of pure cubic ferrite. 40 Various parameters such as lattice parameter, average particle size, calculated from XRD, are listed in Table 1.…”

“…[18][19][20] Consequently, an emphasis on methodological aspects becomes crucial for the design and preparation of ferrite materials. 2,[21][22][23][24][25] Although the conventional ceramic method is widely employed for bulk ferrite preparation, it has many limitations. 15,26 Hoque et al 27 prepared mixed lithium ferrites by the solid-state reaction at various sintering temperatures.…”