Activated carbon/NiFe2O4 magnetic composite: A magnetic adsorbent for the adsorption of methyl orange

Preparation of NiFe2O4/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

“…The characteristic peak belonging to Fe–O stretching vibrations of NiFe 2 O 4 appears at 598 cm −1 . The same peak is also observed in NiFe 2 O 4 /Pth spectrum illustrating the presence of NiFe 2 O 4 in the composite . Other peaks at 1057, 712, and 636 cm −1 in bare NiFe 2 O 4 correspond to Fe–O and Ni–O stretching vibrations.…”

“…Nickel ferrite (NiFe 2 O 4 ) is an interesting soft magnetic material with notable magneto‐conductivity and low hysteresis loss . In recent past, ferrite‐based nanocomposites have drawn significant attention on account of their potential application as adsorbents for removal of dyes from wastewater . In context of polymer nanocomposites, conducting polymers are of considerable interest because of their high conductivity, environmental stability, cost effective monomer, ease of synthesis and unique physicochemical properties .…”

Magnetic calcinated cobalt ferrite/magnesium aluminum hydrotalcite composite for enhanced adsorption of methyl orange

“…To evaluate the relationship between MO ions and the adsorbent at equilibrium and to seek the maximum adsorption capacity of the adsorbent, the adsorption isotherm data were further fitted by Langmuir, Freundlich and Dubnin-Radushkevich (D-R) models [19,22,41]. The equations are expressed as follows:…”

“…Freundlich: as MgNiAl-LDH (118.5 mg/g) and calcined MgNiAl-LDH (375.40 mg/g) [24], ZnAl-LDO (181.90 mg/g) [25], activated carbon/NiFe 2 O 4 (182.82 mg/L) [41], Graphene oxide (16.83 mg/g) [42], Lapindo volcanic mud (333.30 mg/g) [45], MWCNTs/Fe 3 O 4 /pplyaniline (446.25 mg/g) [46], chitosan/Al 2 O 3 /magnetite composite (416 mg/g) [47], rGO/Ni/MMO (210.80 mg/g) [48], and Co/MWCNTs composite (170 mg/g) [49] (as summarized in Table 3), which expressed a strong potential in the application of MO removal from aqueous phase. The high adsorption capacity of CoFe 2 O 4 /MgAl-LDO for MO should be attributed to the high surface area of the adsorbent [31].…”

Selective Adsorption and Photocatalytic Degradation of Dyes Using Polyoxometalate Hybrid Supported on Magnetic Activated Carbon Nanoparticles under Sunlight, Visible, and UV Irradiation

“…Consequently, treatment of dye-contaminated wastewaters with decontamination processes is necessary before their discharge. Adsorption of dyes on inexpensive and efficient solid supports especially on activated carbon (AC) and AC composites is one of the simplest and most economical methods for removing dyes from wastewater [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]; however, the disposal of residues is still a problem. Advanced oxidation processes (AOPs) are widely accepted as an efficient method for dye-contaminated wastewater due to complete degradation of organics into carbon dioxide and water.…”