Tapioca starch in the sol-gel synthesis of cobalt ferrites with divalent cation substitutions

Hunyek, Anuchit; Sirisathitkul, Chitnarong; Koyvanich, Krit

doi:10.33640/2405-609x.3250

Cited by 1 publication

(5 citation statements)

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“…The Williamson-Hall model (W-H) is a simplified integral breadth method that separates the contributions from diffraction line broadening. The crystallite sizes (L) and lattice microstrain (ε) were determined from XRD using the Williamson-Hall method [45][46][47][48][49][50][51][52].…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…where (a) is the lattice constant, λ is the wavelength, (h k l) is Miller indices and θ is the position of the peak, respectively [55,56]. The (a) value for each sample extracted from the prominent XRD line (hkl = 311) with the maximum peak intensity [46]. The (a) values were plotted against Nelson Riley function F(θ)…”

Section: Synthesis Of Lowmentioning

confidence: 99%

“…The increase in particle size in the S-028 sample with the increase of hematite content may be explained by the fact that the hematite nano crystallites may agglomerate at the grain boundaries causing a steady increase in particle size [46].…”

Section: Synthesis Of Lowmentioning

confidence: 99%

“…X-ray density d XRD and porosity P values of ferrite samples were computed by the following equations [46,59]:…”

Section: Synthesis Of Lowmentioning

confidence: 99%

“…In comparison to the pure Cu ferrite, they found that adding the Co to the copper ferrite lowers the density and raises the lattice constant. Hunyek et al [46] found that for the sol-gel synthesis of the cobalt-copper ferrite nanoparticles, an aqueous solution of tapioca starch was used as a chelating agent. This material exhibited the lowest coercive field and the highest saturation magnetization.…”

Section: Introductionmentioning

confidence: 99%

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A Facile Glycerol-Assisted Synthesis of Low-Cu2+-Doped CoFe2O4 for Electrochemical Sensing of Acetaminophen

Alfonso-González,

Granja-Banguera,

Morales-Morales

et al. 2023

Biosensors

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This work devised a simple glycerol-assisted synthesis of a low-Cu2+-doped CoFe2O4 and the electrochemical detection of acetaminophen (AC). During the synthesis, several polyalcohols were tested, indicating the efficiency of glycerin as a cosolvent, aiding in the creation of electrode-modifier nanomaterials. A duration of standing time (eight hours) before calcination produces a decrease in the secondary phase of hematite. The synthesized material was used as an electrode material in the detection of AC. In acidic conditions (pH 2.5), the limit of detection (LOD) was 99.4 nM, while the limit of quantification (LOQ) was found to be (331 nM). The relative standard deviation (RSD), 3.31%, was computed. The enhanced electrocatalytic activity of a low-Cu2+-doped CoFe2O4-modified electrode Cu0.13Co0.87Fe2O4/GCE corresponds extremely well with its resistance Rct, which was determined using the electrochemical impedance spectroscopy (EIS) technique and defined its electron transfer capacity. The possibility of a low-Cu2+-doped CoFe2O4 for the electrochemical sensing of AC in human urine samples was studied. The recovery rates ranging from 96.5 to 101.0% were obtained. These findings suggested that the Cu0.13Co0.87Fe2O4/GCE sensor has outstanding practicability and could be utilized to detect AC content in real complex biological samples.

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