Superior adsorption of methyl blue on magnetic Ni–Mg–Co ferrites: Adsorption electrochemical properties and adsorption characteristics

Abstract

The harm and treatment of methyl blue (MB) were described, and the necessity for the removal of MB by magnetic nanomaterials was explained. Magnetic Ni-Mg-Co ferrites were prepared by the rapid combustion approach of an active nitrate solution and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIR), energy dispersive spectroscopy, and vibrating sample magnetometer. Magnetic Ni 0.1 Mg 0.7 Co 0.2 Fe 2 O 4 nanoparticles prepared at 400 C with the saturation magnetization of 19.7 emu g À1 and the average diameter of about 15.2 nm were used to adsorb MB from the aqueous medium. The Brunauer-Emmett-Teller (BET) analysis showed that the specific surface area was 143.17 m 2 g À1 and the average pore size was 9.44 nm. The adsorption mechanism of MB onto magnetic Ni 0.1 Mg 0.7 Co 0.2 Fe 2 O 4 nanoparticles was studied, and the results revealed that the adsorption properties conformed the pseudo-second-order kinetics model due to the square deviation values (R 2 > 0.98), and Temkin model could describe the adsorption state of MB onto Ni 0.1 Mg 0.7 Co 0.2 Fe 2 O 4 nanoparticles, which suggested that the adsorption of MB onto Ni 0.1 Mg 0.7 Co 0.2 Fe 2 O 4 nanoparticles was monolayer-multilayer hybrid chemisorption mechanism. When the pH value exceeded 3, the adsorbance reached large value; while, the adsorbance was 97.6% of the initial adsorption value for seven cycles. The electrochemical impedance spectroscopy and cyclic voltammetry curves of MB adsorbed onto the nanoparticles before and after the adsorption were determined.

Raw sunflower seed shell particles as a green adsorbent for the adsorption of synthetic organic dyes from wastewater

“…Additionally, the pH of samples was adjusted to optimum values by 0.1 M HCl or 0.1 M NaOH solutions. The impact of the factors at their different ranges, that is, pH (3)(4)(5)(6)(7)(8)(9)(10)(11)(12), contact time (2-20 min), dose (0.003-0.03 g), temperature (25-85 C), and the initial dye concentration (50-200 mg/L), interference ion (0.1-0.9 M), and agitation speed (200 rpm) on adsorption of dyes was investigated.…”

“…Because of growing concern regarding human health and environmental problems in recent years, several wastewater treatment techniques have been used extensively 3,4 . Various methods such as irradiation and ozonation, reverse osmosis, membrane filtration, coagulation and flocculation, ultrafiltration, biological treatments, aerobic and anaerobic degradation, chemical oxidation, electrochemical degradation, sonochemical degradation, and photocatalytic degradation and adsorption have been widely used for removal of dyes from the industrial waste 5–15 . In comparison with other wastewater treatment techniques, adsorption has demonstrated its economic feasibility and effectiveness 16–19 .…”

“…3,4 Various methods such as irradiation and ozonation, reverse osmosis, membrane filtration, coagulation and flocculation, ultrafiltration, biological treatments, aerobic and anaerobic degradation, chemical oxidation, electrochemical degradation, sonochemical degradation, and photocatalytic degradation and adsorption have been widely used for removal of dyes from the industrial waste. [5][6][7][8][9][10][11][12][13][14][15] In comparison with other wastewater treatment techniques, adsorption has demonstrated its economic feasibility and effectiveness. [16][17][18][19] The one failure of the adsorption method was the high cost of adsorbents but applying cheap and at the same time efficient adsorbents; rose to become an economical method of dye removal.…”

Immobilization and property of penicillin G acylase on amino functionalized magnetic Ni0.3Mg0.4Zn0.3Fe2O4 nanoparticles prepared via the rapid combustion process

“…Using magnetic nanoparticles as carrier materials not only facilitates separation but also preserves the mobilities of PGA ( Ansari and Husain, 2012 ; Liu et al, 2018 ). Magnetic nanomaterials have numerous advantages, such as high mechanical strength, large specific surface area, high mass transfer, uniform pore size distribution, facile recycling from the system, and easily modified surfaces ( Yu et al, 2019a ; Ling et al, 2022 ). There are many approaches used for the preparation of magnetic nanomaterials, such as the microemulsion method, ball-milling method, and co-precipitation and ultrasonic-assisted sol-gel methods ( Akgul and Akgul, 2022 ; Liu W. et al, 2022 ; Muşat et al, 2022 ).…”

Highly efficient removal of methylene blue from aqueous solution by magnetic biochar prepared from hawthorn seeds

“…7 The adsorption process is highly efficient for the removal of dyestuff from wastewater in terms of its low cost, ease of operation, and insensitivity to toxic substances in comparison with the other used processes. There are different types of adsorbents such as biomass, 8 nanoparticles, [9][10][11][12][13][14] polyvinyl alcohol, 15 active carbon [16][17][18] and clay material 5 to remove dyestuffs from the environment. Biochar is one of the most commonly used carbon-rich material in different studies due to its high surface area.…”