Fe3O4 Particles Research Articles

Silicon carbide capped magnetite nanoparticles: Role of capping on high-temperature stability, magnetic properties, and water dispersibility

The functionalization of nanoparticles is important to improve their oxidation resistance, prevent agglomeration and improve stability of colloids. However, capping magnetic nanoparticles with a stable ultrathin layer of organic or inorganic materials, without compromising magnetic properties, is still a challenge. In this paper, we report for the first time a novel approach to prepare magnetite (Fe3O4) nanoparticles with superior thermal stability by capping them with a thin shell of silicon carbide (SiC), using sonochemical degradation of dimethyldichloro silane (DMDCSi). The synthesized silicon carbide capped Fe3O4 nanoparticles are characterized using Fourier transform infrared (FT-IR) spectroscopy, and thermogravimetric analyzer. FTIR analysis confirms the hydrophilic SiC capping over the Fe3O4 nanoparticles. The influence of silicon carbide capping over magnetic property and crystal structure was analyzed by vibrating sample magnetometer (VSM) and X-ray diffractometer (XRD) measurements, respectively. The possible mechanism of SiC capping over the particles is explained. SiC capped particles are hydrophilic in nature, where water molecules dissociate spontaneously on the surface of the SiC layer and form Si–OH and electropositive Si atom stabilizes the surface dangling bonds and reduces surface energy. The SiC-capped particles showed better thermal stability with an increased magnetic γ-Fe2O3 to the non-magnetic α-Fe2O3 phase transition temperature of >167 °C as compared to bare particles. The enhancement of phase transition temperature in SiC capped Fe3O4 is due to the increased activation energy by effective binding of SiC with the surface oxidized γ-Fe2O3 layer and the formation of an oxidized passive layer that acts as a thermal barrier. The results suggest that the surface oxidized maghemite (γ-Fe2O3) content over the Fe3O4 particles surface can improve SiC adsorption and enhance their phase stability significantly.

Fe2O3 Synthesized by Sol-Gel Method for Energy Storage Applications

Fe2O3 nanopowders were synthesized by sol-gel method from the iron source material Fe(NO3)3.9H2O and citric acid C6H8O7.H2O without any refined process. The structure and size of the synthesized materials were determined by X-ray diffraction and scanning electron microscopy. The obtained product is α-Fe2O3 with different shapes and sizes depending on the preparation conditions. α-Fe2O3 was applied as anode of iron-air battery. The cyclic voltammetry measurements showed that the size and morphology of Fe2O3 particles affect their electrochemical characteristics. Using K2S as an electrolyte additive improved the electrochemical properties of Fe2O3/AB electrodes as evidenced by increased redox reaction rate of iron, increased capacity of Fe2O3/AB electrode and reduced H2 evolution.

Investigating the Effect of Fe2O3 on Wear Behaviour and Corrosion Resistance of Electroless Ni–P Coating with Different Fe2O3 Concentrations on AISI 4140 Steel

In this study, Ni–P–Fe2O3 composite was deposited on AISI 4140 steel using different concentrations of Fe2O3 ranging from 0.1 to 0.5 gr/lit in an electroless bath. The phase analysis and surface morphology of the samples were characterized using X-ray diffraction and FESEM. The corrosion behavior of the coated samples was investigated in a 3.5 wt. % NaCl solution through potentiodynamic polarization. The results of the potentiodynamic test show that adding Fe2O3 into an electroless bath facilitates the formation of the passive layer. The results show that the coating created at a thickness of (10-16µm) had the highest corrosion resistance compared to other coated and non-coated samples. Furthermore, the results of the friction coefficients of the samples produced by powder metallurgy have decreased because Fe2O3 particles led to a decrease in grain size in the heat treatment of specimens and prevented excessive heat generation during the wear test; thus, the friction coefficient decreased during the test.

Study of Magnetoelectric Properties of Composites Based on Magnetic Particles of Fe2O3 and Bentonite Using Percolation Theory

Study of Magnetoelectric Properties of Composites Based on Magnetic Particles of Fe2O3 and Bentonite Using Percolation Theory

Adsorption and catalytic degradation of bisphenol A and p-chlorophenol by magnetic carbon nanotubes

Phenolic compounds are common industrial pollutants that seriously endangers water ecology and human health. Therefore, the development of efficient and recyclable adsorbents is of importance for wastewater treatment. In this research, HCNTs/Fe3O4 composites were constructed using co-precipitation way by loading magnetic Fe3O4 particles onto hydroxylated multi-walled carbon nanotubes (MWCNTs), showing excellent adsorption capacity for Bisphenol A (BPA) and p-chlorophenol (p-CP), and excellent catalytic ability of activating potassium persulphate (KPS) for degradation of BPA and p-CP. The adsorption capacity and catalytic degradation potential were evaluated for the removal of BPA and p-CP from solutions. The results showed that the adsorption took only 1 h to reach equilibrium and HCNTs/Fe3O4 had maximum adsorption capacities of 113 mg g−1 for BPA and 41.6 mg g−1 for p-CP at 303 K, respectively. The adsorption of BPA fitted well using the Langmuir, Temkin and Freundlich models while the adsorption of p-CP fitted well using the Freundlich and Temkin models. BPA adsorption on HCNTs/Fe3O4 was dominated by π-π stacking and hydrogen bonding forces. The adsorption included both the mono-molecular layer adsorption on the adsorbent surface and the multi-molecular layer adsorption on the non-uniform surface. The adsorption of p-CP on HCNTs/Fe3O4 was a multi-molecular layer adsorption on a dissimilar surface. The adsorption was controlled by forces such as π-π stacking, hydrogen bonding, partition effect and molecular sieve effect. Moreover, KPS was added to the adsorption system to initiate a heterogeneous Fenton-like catalytic degradation. Over a wide pH range (4–10), 90% of the aqueous BPA solution and 88% of the p-CP solution were degraded in 3 and 2 h, respectively. After three adsorption-regeneration or degradation cycles, the removal of BPA and p-CP remained up to 88% and 66%, indicating that HCNTs/Fe3O4 composite is cost-effective, stable and highly efficient to remove BPA and p-CP from solution.

Iron carbide interface modulating for synergies of 3D-graphene-like and iron-coated Fe3O4 particles for high microwave absorption performance

Iron carbide interface modulating for synergies of 3D-graphene-like and iron-coated Fe3O4 particles for high microwave absorption performance

Nano-Hollow Zeolite-Encapsulated Highly Dispersed Ultra-Fine Fe Nanoparticles as Fischer–Tropsch Catalyst for Syngas-to-Olefins

A nano-hollow zeolite-encapsulating ultra-fine Fe nanoparticle catalyst denoted as Fe@n-hS-HT was successfully synthesized through a simple water steam treatment of the Fe@n-hS catalyst prepared by the “dissolution–recrystallization” (D-R) method. The Fe@n-hS-HT catalyst had a hierarchical porous structure and a high dispersion of Fe2O3 particles with a size of 3.4 nm. Furthermore, the results of several characterization methods, such as XRD, HAADF-STEM, and H2-TPR, further demonstrated the transformation of the skeleton Fe in Fe@n-hS into Fe2O3, which was uniformly dispersed in the Fe@n-hS-HT catalyst. Meanwhile, Fe@n-hS-HT had significantly higher selectivity and yield of C2-C4= than the reference catalysts Fe/S and Fe@n-hS, which provided strong proof for the confined catalysis of the metal@zeolite catalyst.

Fabrication and Characterization of Magnetic Cellulose-Chitosan-Alginate Composite Hydrogel Bead Bio-Sorbent.

The implementation of inorganic adsorbents for the removal of heavy metals from industrial effluents generates secondary waste. Therefore, scientists and environmentalists are looking for environmentally friendly adsorbents isolated from biobased materials for the efficient removal of heavy metals from industrial effluents. This study aimed to fabricate and characterize an environmentally friendly composite bio-sorbent as an initiative toward greener environmental remediation technology. The properties of cellulose, chitosan, magnetite, and alginate were exploited to fabricate a composite hydrogel bead. The cross linking and encapsulation of cellulose, chitosan, alginate, and magnetite in hydrogel beads were successfully conducted through a facile method without any chemicals used during the synthesis. Energy-dispersive X-ray analysis verified the presence of element signals of N, Ca, and Fe on the surface of the composite bio-sorbents. The appearance and peak's shifting at 3330-3060 cm-1 in the Fourier transform infrared spectroscopy analysis of the composite cellulose-magnetite-alginate, chitosan-magnetite-alginate, and cellulose-chitosan-magnetite-alginate suggested that there are overlaps of O-H and N-H and weak interaction of hydrogen bonding with the Fe3O4 particles. Material degradation, % mass loss, and thermal stability of the material and synthesized composite hydrogel beads were determined through thermogravimetric analysis. The onset temperature of the composite cellulose-magnetite-alginate, chitosan-magnetite-alginate, and cellulose-chitosan-magnetite-alginate hydrogel beads were observed to be lower compared to raw-material cellulose and chitosan, which could be due to the formation of weak hydrogen bonding resulting from the addition of magnetite Fe3O4. The higher mass residual of cellulose-magnetite-alginate (33.46%), chitosan-magnetite-alginate (37.09%), and cellulose-chitosan-magnetite-alginate (34.40%) compared to cellulose (10.94%) and chitosan (30.82%) after degradation at a temperature of 700 °C shows that the synthesized composite hydrogel beads possess better thermal stability, owing to the addition of magnetite and the encapsulation in the alginate hydrogel beads.

Monitoring of the Fe2O3 Particle Size Distribution by Intensity in the Context of Digital Company

This research studies monitoring of Fe2O3 iron particle size produced in industrial companies on the premises of a hot rolling mill. The analysis used the distribution curve method - particle size distribution by intensity. This method determined which particles occur most often in the sample, what is the average particle size, smallest and largest particles. Digitization of individual procedures and monitoring of technological processes provides data that can be worked with at a given time.The obtained data represent a source of information for their further processing in the field of maintenance prediction.

H2O2 scavenging and biocompatibility assessment of biosynthesized cellulose/Fe3O4 nanocomposite showed superior antioxidant properties with increasing concentration

Cellulose-based multi-component nanocomposites and biomaterials have some unique properties that give rise to construction in various fields. Recently many studies focused on green technology, which avoids toxic chemicals to make the environment sustainable. The hot-plate combustion method (HPCM) provides a green synthesis that can be used to achieve this goal. Present work deals with the synthesis of cellulose/Fe3O4 nanocomposite (1:1 ratio) via the co-precipitation method and analyzes the biocompatibility and photocatalytic activity. X-ray diffraction (XRD) pattern confirms the formation of cellulose II phase for cellulose and cubic crystalline phase of Fe3O4 particles. Fourier transform infrared (FTIR) analysis showed that the synergy of carbohydrates and proteins is responsible for the fabrication of Fe3O4 nanoparticles and confirms the formation of cellulose/Fe3O4 nanocomposite by the green method. Field emission scanning microscopy (SEM) images revealed two different shapes of cellulose/Fe3O4 nanocomposites including rods and spherical shapes of nanomaterials with particle sizes observed between 20 and 30 nm. The bandgap of cellulose/Fe3O4 nanocomposite was achieved to 2.79 eV, which depicted the best active antibacterial and photocatalyst. The cellulose/Fe3O4 nanocomposite exhibited strong antibacterial as well as antioxidant activity compared with Fe3O4 nanoparticles, towards with maximum of (17.3 ± 0.5 mm) at 2.5 µg/mL against Escherichia coli (MTCC 443) and minimum zone of inhibition of (9.6 ± 1.1 mm) on Staphylococcus aureus (MTTC 3615) at 0.5 µg/mL, respectively. The breakdown of an aqueous medium of methyl orange (MO) dye by the cellulose/Fe3O4 nanocomposite was investigated under visible light irradiation and a higher degradation efficiency of 96.25% was attained at 120 min. The synthesized cellulose/Fe3O4 nanocomposite showed a positive response for photocatalytic and antibacterial activity.

Efficient removal of methylene blue from water using magnetic Alyssum homolocarpum seed gum-based matrix

In this study, we fabricated magnetic Fe3O4 nanoparticles conjugated with anionic hydroxypropyl starch-graft-acrylic acid (Fe3O4@AHSG) for the efficient removal of methylene blue (MB) dye from aqueous solutions. The synthesized nanoconjugates were characterized using various techniques. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analysis revealed that the particles exhibited homogeneously distributed nanosized spherical shapes with a mean diameter of 41.72 ± 6.81 nm. The EDX analysis confirmed the absence of impurities, with the Fe3O4 particles comprising 64.76 % iron and 35.24 % atomic oxygen. Dynamic light scattering (DLS) measurements showed a monodisperse particle system with a mean hydrodynamic size of 135.4 nm (polydispersity index, PI = 0.530) for the Fe3O4 nanoparticles and 163.6 nm (PI = 0.498) for the Fe3O4@AHSG adsorbent. Vibrating sample magnetometer (VSM) analysis indicated superparamagnetic behavior for both Fe3O4 and Fe3O4@AHSG, with higher saturation magnetization (Ms) observed for Fe3O4. The dye adsorption studies demonstrated that the adsorbed dye capacity increased with increasing initial MB concentration and adsorbent dose. The pH of the dye solution significantly influenced the adsorption, with the highest adsorption observed at basic pH values. The presence of NaCl reduced the adsorption capacity due to increased ionic strength. Thermodynamic analysis indicated the thermodynamically favorable and spontaneous nature of the adsorption process. Kinetic studies revealed that the pseudo-second-order model provided the best fit to the experimental data, suggesting chemisorption as the rate-limiting step. Overall, Fe3O4@AHSG nanoconjugates exhibited excellent adsorption capacity and could be a promising material for effective removal of MB dye from wastewater.

Simplified hydrometallurgical route for the synthesis of silica-free hematite from iron ore tailings

The processing of iron ore generates large volumes of tailings. Acid leaching enables the solubilization of iron in an aqueous solution, allowing the production of ferric liquor and a silica-rich residue. The purpose of this investigation was to use the leachate resulting from this process to synthesise high-quality iron oxide. The conducted methodology involved acid leaching, selective iron precipitation as a function of pH, and the thermal conversion of the precipitated iron oxy-hydroxides into iron oxide particles. The iron oxide consisted of micro/nano Fe2O3 particles which were free of silica, with iron contents of 64% and particle sizes of less than 28 μm. The process presented an overall iron recovery around 84%. The resulting material could be used as a commercial pigment or be incorporated into steel-making iron pellets. The hydrometallurgical conversion of iron ore wastes into valuable products may contribute to the future of mining and to green steel production.

Selective Adsorption Behavior and Mechanism for Cd(II) in Aqueous Solution with a Recoverable Magnetie-Surface Ion-Imprinted Polymer.

A novel recoverable magnetic Cd(II) ion-imprinted polymer was synthesized on the surface of silica-coated Fe3O4 particles via the surface imprinting technique and chemical grafting method. The resulting polymer was used as a highly efficient adsorbent for the removal of Cd(II) ions from aqueous solutions. The adsorption experiments revealed that Fe3O4@SiO2@IIP had a maximum adsorption capacity of up to 29.82 mg·g-1 for Cd(II) at an optimal pH of 6, with the adsorption equilibrium achieved within 20 min. The adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm adsorption model. Thermodynamic studies showed that the adsorption of Cd(II) on the imprinted polymer was spontaneous and entropy-increasing. Furthermore, the Fe3O4@SiO2@IIP could rapidly achieve solid-liquid separation in the presence of an external magnetic field. More importantly, despite the poor affinity of the functional groups constructed on the polymer surface for Cd(II), we improved the specific selectivity of the imprinted adsorbent for Cd(II) through surface imprinting technology. The selective adsorption mechanism was verified by XPS and DFT theoretical calculations.

Separation of iron from converter dust by superconducting HGMS: A simulation analysis and experimental study

Converter dust (LT dust) is an important solid waste from steelmaking, in which iron oxides are the preferred raw material for preparing high value-added α-Fe2O3. Since LT dust contains many impurities, the iron oxides in the LT dust must be enriched and purified before the preparation of α-Fe2O3. Particle trapping behaviors of the matrices as well as the magnetic flocculation of LT dust particles in superconducting high gradient magnetic separation (S-HGMS) were investigated with numerical simulations and experiments. The geometric shape, aspect ratio a:b, and angle α between the axis and the magnetic field direction of the matrices affected the maximum magnetic field intensity (Hmax) and effective capture area (Seca). Diamond matrices had better particle-capture capacity than elliptic and circular matrices because the diamond matrices produced a tip effect and increased the magnetic field force. When the cross section of the matrices was parallel to the direction of the particle velocity, magnetic/weakly magnetic particles were more easily captured by the upper and lower ends of the matrices compared with that of two sides because the particle velocity at the upper and lower ends of the matrices was smaller than that of two sides, making the magnetic force greater than the drag force. Fe2MgO4 and Fe2O3 particles were more prone to magnetic flocculation than other particles because of their higher magnetic susceptibility. The dispersant changed the pH of the solution and the charges on the surface of LT dust particles, and the particles were effectively dispersed because of the action of electrostatic forces. When the magnetic induction was 1.8 T, the dispersant dosage was 20 mg/L, the pulp concentration was 1.5%, and the total Fe content increased by 8.72%, corresponding to an Fe recovery of 91.65%. Finally, a method was developed for extracting iron oxides from LT dust using S-HGMS, to prepare high value-added α-Fe2O3.

Photothermal and thermoelectric power generation performance based on bionic structure and composite nanofluids

Thermoelectric power generation (TEG) technology is a green energy utilization technology that is spread over a wide range of industrial fields. Based on the Seebeck effect, in order to provide a higher output voltage of the thermoelectric power generation, raising the temperature difference at both ends of the thermoelectric power generation is a very effective method. Fe3O4 particles were modified on the nanotube particles by co-precipitation method to produce novel composite magnetic FCNTs nanofluids. They have excellent paramagnetism under geomagnetic field and exhibit promising photothermal efficiency. The cooling scheme based on bionic structure and photothermal nanofluids were coupled to the TEG technology, and a TEG experimental platform was built. The temperature rises of photothermal nanofluids in the TEG system was studied. Effects of Reynolds number (Re=600–1200), light intensity (2 sun, 3 sun, 4 sun) and nanofluids concentration (50 ppm, 100 ppm, 150 ppm) on thermoelectric power generation were studied. Results showed that the capacity of the TEG can be strengthened by increasing mass fraction of nanofluids and light intensity. The maximum open circuit voltage of the system can reach 6.48 mV, and the max increase ratio is 25.06%.

Ferrocene-based catalysts for in-situ hydrothermal upgrading of heavy crude oil: Synthesis and application

In this work, the effect of synthesized Ferrocene-based ligand catalysts, including Mono-, Di- and Tri-Ferrocene, as additives for promoting the catalytic in-situ hydrothermal upgrading of Tatarstan (Russia) heavy crude oil was studied. In addition, the changes in composition of upgraded oil samples as well as the in-situ transformation and characteristics of used catalysts were evaluated in detail using comprehensive analyzing techniques. All of the catalytic and non-catalytic hydrothermal upgrading experiments were carried out under the steam stimulation conditions at 300 °C, 72 bar (1044.27 psi) and 24 h of reaction time. The results show that introducing Ferrocene-based ligand catalysts to the upgrading system promotes the in-situ upgrading of heavy crude oil and improves the physical and chemical properties of upgraded oil samples. The maximum viscosity reduction was observed in presence Tri-Ferrocene and reached around 40% compared to non-catalytic hydrothermal upgrading. In addition, the upgrading performance also reflects in increase of H/C ratio, reduction of sulfur content, increase of saturates and aromatics, and decrease of the content of resins and asphaltenes as well as a noticeable change (increase) in the light fractions of C10-C20 are observed for all upgraded oil samples. Mono-Ferrocene as an oil-soluble catalyst mainly transformed to the particles of Fe3O4 (Magnetite) and FeS, which can act as active forms of catalysts and accelerate the hydrothermal conversion of heavy crude oil and its heavy fractions including resins and asphaltenes. These transformations were confirmed using XRD, SEM-EDX and Mössbauer analyzing techniques. Generally, the good catalytic performance of used ferrocene-based ligand catalysts as well as their low cost and commercial availability makes them great potential catalysts for improving the efficiency of steam injection for heavy oil production and in-situ upgrading.

Utilization of agricultural waste to herbicide removal: Magnetic BEA zeolite adsorbents prepared by dry-gel conversion using rice husk ash–derived SiO2 for paraquat removal

This study presents a method that will allow for the sustainable utilization of rice husk ash-SiO2 (RHAS), an agricultural-waste–derived material, as a bulky solid SiO2 source in the zeolite beta (BEA)/Fe3O4 composite (magnetic RHAS-BEA) synthesis via a dry-gel conversion method for the removal of paraquat, a typical herbicide, from aqueous solutions. Ultrasonic waves were used to facilitate the formation of uniform Fe3O4-contained dry precursor gel before converting to the magnetic BEA zeolite composite for the first time. Magnetic RHAS-BEA was then characterized and compared with a non-magnetic sample (RHAS-BEA) using X-ray diffraction and field-emission scanning electron microscopy. In terms of adsorption, we found that paraquat had a high adsorption rate on the samples and conformed to a pseudo-second-order kinetic model. The adsorption behavior of paraquat on the synthesized RHAS-BEA and magnetic RHAS-BEA obeyed the Langmuir adsorption isotherm model. The synthesized adsorbents were reusable for at least four cycles, via thermal regeneration at 450 °C. The inclusion of Fe3O4 particles in magnetic RHAS-BEA disrupted neither the crystallization of the BEA zeolite nor the adsorption of paraquat and enabled easy collection via an external magnet.

Role of α-Fe2O3 nano-particles in protecting wood from ultraviolet light degradation

Abstract The incorporation of nano-particles into coatings to protect wood against UV light has tremendous potential for improving coating performance. However, the understanding of the mechanisms by which these particles function on wood surfaces remains limited. The distribution and potential chemical interactions between alpha Fe2O3 and wood were studied. The ability of different sizes of Fe2O3 particles to intercept various wavelengths of light was assessed using ultraviolet/visible (UV–vis) spectroscopy using TiO2 and ZnO particles for comparison. All particles intercepted UV light, but α-Fe2O3 also intercepted a portion of the visible spectrum which might help explain its better performance. Scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM-EDS) analysis of α-Fe2O3 nano-particle distribution on different wood orientations of radiata pine (Pinus radiata D. Don) and shining gum (Eucalyptus nitens) showed that iron particles were uniformly distributed on both pine and shining gum, but provided better UV protection to the more permeable radiata pine surfaces. Characterization of chemical interactions between α-Fe2O3 and isolated lignin and cellulose by Fourier Transform Infrared Spectroscopy (FTIR) suggested substantial interactions between these particles and lignin components, but little interaction with cellulose. The results suggest that the role of nano-particles in the UV protection of wood surface is to intercept and disperse the light energy while interacting with the wood.

Preparation of a new green magnetic Fe3O4 @TiO2-P25 photocatalyst for solar advanced oxidation processes in water

A novel green method has been investigated to obtain a magnetic recoverable photocatalyst. Fe3O4 particles formed in situ by aerial oxidative precipitation of aqueous Fe(II) in the presence of terephthalate were bonded to TiO2-P25 nanoparticles, giving rise to a coupled semiconductor heterostructure with superparamagnetic behavior at room temperature (Fe3O4 @TiO2-P25). The synthesis method is carried out in water at room temperature with almost full recovery and recycling of terephtalic acid. The prepared samples were fully characterized by XRD, TGA-DTA-MS, ATR-FTIR, WDXRF, TEM, SEM/EDX, N2 adsorption-desorption, elemental analysis, XPS, DRS, PL spectroscopy and SQUID. Photo-stability tests showed that Fe3O4 @TiO2-P25 does not undergo photodissolution under simulated solar radiation. The photocatalytic performance of Fe3O4 @TiO2-P25 was examined based on its ability to degrade aqueous metoprolol under UV–vis radiation in the presence of O2 and O3/O2. Also, the catalyst was successfully reused in six solar photocatalytic ozonation runs with negligible loss of photocatalytic activity.

A novel clay/sludge-based magnetic ceramsite: Preparation and adsorption removal for aqueous Cu(II)

ABSTRACT Printing and dyeing sludge (PADS) and magnetic clay (MC, clay loaded with Fe3O4) were utilized as raw materials to prepare a novel ceramsite for Cu(II) removal from wastewater. The optimal preparation conditions were calcination temperature = 600°C, magnetic attapulgite (MA) : magnetic bentonite (MB) = 3:1, PADS = 40%, and iron content = 20%. The ceramsite prepared under these conditions (i.e. A600-3-20) had the best removal capacity for aqueous Cu(II). N2 adsorption and desorption isotherm confirmed that A600-3-20 was a porous material, with an average pore size of 14.78 nm and a surface area of 49.943 m2/g. Fe3O4 particles were successfully loaded onto the surface of the ceramsite, with a magnetic saturation intensity of 26.83 emu/g. The removal rate of Cu(II) from 40 mg/L solution by A600-3-20 reached 90%-98% under the optimal adsorption conditions. Adsorption kinetics fitted the pseudo-second-order dynamic model. Adsorption isotherm followed the Langmuir isotherm model, with the maximum adsorption capacity (qm) was 2.40 mg/g. The adsorption mechanisms were mainly dominated by chemisorption, including ion exchange and surface complexation. The magnetic ceramsite had no heavy metal leaching risk and displayed an excellent reusability, indicating its potential as an environment-friendly and low-cost adsorbent for aqueous Cu(II) removal.