Surface Morphology Characteristics Research Articles

Candida Antarctica Lipase B-assisted top-down visualization of surface morphology of poly(ε-caprolactone)/poly(ethylene oxide) blend films

A series of enzymatic degradation experiments were designed to examine the surface morphology of phase separated poly(ε-caprolactone) (PCL)/poly(ethylene oxide) (PEO) blend films. Candida antarctica Lipase B (CALB), previously reported to have superior degradation selectivity when used at low concentrations, was utilized to selectively dissect interlamellar amorphous PCL chains and therefore to reveal the crystalline region of PCL phase. Water soluble PEO can be simultaneously removed by the CALB aqueous solutions, allowing one to envision the topological features of phase separated PCL/PEO films with various blend ratios. The transition of phase-separated PCL/PEO from nucleation and growth to spinodal decomposition was fully mapped out, along with the spatial distribution and surface morphological features of the crystalline PCL phase. The morphological characteristics of PCL/PEO blend films were further correlated to their reported physicochemical properties, demonstrating the impact of microscopic structures on the macroscopic properties of given semicrystalline polymer systems.

Preparation, characterization, in vitro and in vivo studies of liposomal berberine using novel natural Fiber Interlaced Liposomal technology

Berberine hydrochloride (BBR), used in various traditional medicinal practices, has a variety of pharmacological effects. It is a plant-derived quaternary isoquinoline alkaloid with a low water solubility and can be used in the treatment of various conditions. However, the therapeutic use of BBR has been compromised because of its hydrophobic characteristics, in addition to its low stability and poor bioavailability. To overcome these drawbacks of BBR’s oral bioavailability, technologies like liposomal delivery systems have been developed to ensure enhanced absorption. But conventional liposomes have low physical and chemical stability due to delicate liposomal membranes, peroxidation and rapid clearance from the bloodstream. Surface modification of liposomes could be a solution and creating a liposome with plant-based fibers as surface material will provide enhanced stability, aqueous solubility and protection against degradation. Consequently, the aim of this study is to create and describe a Fiber Interlaced Liposome™ (FIL) as a vehicle for an enhanced bioavailability platform for BBR and other biomolecules. This optimised FIL-BBR formulation was analysed for its structural and surface morphological characteristics by using FTIR, SEM, TEM, XRD, zeta potential and DSC. Encapsulation efficiency, stability, and sustained release studies using an in vitro digestion model with simulated gastric and intestinal fluids were also examined. FIL formulation showed a sustained release of BBR at 59.03 % as compared to the unformulated control (46.73 %) after 8 h of dialysis. Furthermore, the FIL-BBR demonstrated enhanced stability in the simulated gastric fluid (SGF) in addition to a more sustained release in the simulated intestinal fluid (SIF). The efficacy of FIL-BBR were further anlaysed by an in vivo bioavailability study using male Wistar rats and it demonstrated a 3.37−fold higher relative oral bioavailability compared to the unformulated BBR. The AUC 0-t for BBR in FIL-BBR was 1.38 ng.h/mL, significantly greater than the unformulated BBR (0.41 ng.h/mL). Similarly, the Cmax for BBR in FIL-BBR (50.98 ng/mL) was discovered to be far greater than unformulated BBR (15.54 ng/mL) after the oral administration. These findings imply that fruit fiber based liposomal encapsulation improves the stability and slows down BBR release, which could be advantageous for applications requiring a higher bioavailability and a more sustained release.

Machining damage in the fabrication of polycrystalline diamond micro end mill with laser and grinding combined processing method

The high hardness and wear resistance of polycrystalline diamond (PCD) micro tool make it widely used in precision machining of small parts of difficult-to-machine materials. The laser and grinding combined machining is an effective method to fabricate PCD micro tools, but the machining damage is difficult to control, which will reduce the cutting performance and tool life. Therefore, this paper aims to deeply study the damage forms and damage formation mechanisms during the fabrication process of PCD micro end mills, so as to improve the quality of the PCD micro mills. The laser and grinding combined machining experiments of PCD micro end mill are carried out, and the surface morphology characteristics and cutting edge of the mill are observed and analyzed. The influence of process parameters on the fabrication quality of PCD micro mill is investigated. The experimental results show that the high temperature of the laser is the main factor causing damage, which causes the melting and oxidation of the surface material, and further forms micro cracks, pits and oxidized attachments on the PCD mill. In addition, diamond phase transformation and excessive removal of cobalt-rich layer will also lead to graphitization and micro-grooves on the mill surface. For the grinding process, the cutting edge is fractured by the impact of the wheel, resulting in micro notches, micro pits and micro cracks. The intergranular crack expansion of PCD material and cleavage breakage of diamond particles are the main causes of micro cracks and micro pits on the mill surface. In addition, the chips will also scratch the tool surface to produce micro nicks and cause the chips coating on the rake face. The research results are helpful to further understand the damage mechanism of laser and grinding combined machining PCD mill, so as to improve the fabrication quality of micro tools.

Study on the influence of wood ray morphological characteristics on the tensile strength of wood parallel to grain

The tensile strength of wood parallel to grain is one of the important indicators of wood physical and mechanical properties. Cross-sectional shape possesses a significant effect on the tensile strength parallel to grain, especially for broad-leaved trees with broad wood rays. However the influence of the structural feature of wood rays on the test results, which was commonly ignored. The article focuses on the beech tree with two types of wood rays: broad and narrow, poplar wood with extremely fine wood rays, and dilleniad with extremely rich wood rays. The relationship between the inclination angle and fracture mode of wood rays and the microstructure of wood rays is studied, in order to provide a more accurate scientific basis for determining the tensile strength of wood parallel to grain. The results showed that the inclination angle between the wood ray and the tensile direction has a significant impact on the fracture mode and tensile strength, and the tensile strength parallel to grain without inclination angle is greater than that with inclination angle. Different types of wood rays have a effect on the coefficient of variation of the tensile strength parallel to grain of the specimen. Under the same inclination angle, the Pearson correlation between the wood ray parenchyma ratio and the tensile strength parallel to grain is significantly negative at the 0.01 level (double tailed) or 0.05 level (double tailed). Besides, as the wood ray parenchyma ratio gradually increases, the overall tensile strength of wood parallel to grain shows a downward trend. The fracture surface morphology characteristics of specimens with different fracture modes are different.

Composite hydrogels fabricated from CMC-PVA-GG incorporated with ZiF-8 for wound healing applications

The skin is at risk for injury to external factors since it serves as the body’s first line of defense against the external environment. Hydrogels have drawn much interest due to their intrinsic extracellular matrix (ECM) properties and their biomimetic, structural, and durable mechanical characteristics. Hydrogels have enormous potential use in skin wound healing due to their ability to deliver bioactive substances easily. In this study, composite hydrogels were developed by blending guar gum (GG), polyvinyl alcohol (PVA), and carboxymethyl cellulose (CMC) with crosslinker TEOS for skin wound treatment. The structural, surface morphology, surface roughness, and stability features of the composite hydrogels were characterized by several techniques, such as FTIR, SEM-EDX, AFM, and DSC. The increasing ZiF-8 causes more surface roughness, with decreased swelling in different media (Aqueous > PBS > NaCl). The increasing ZiF-8 amount causes less hydrophilic behavior and biodegradation with increasing gel fraction. The cytocompatibility of Zinc imidazolate framework-8 (ZiF-8) based composites was evaluated against fibroblast cell lines by cell viability, proliferation, and cell morphology. The increasing ZiF-8 caused more cell viability and proliferation with proper cell morphology. Hence, the results show that synthesized composite hydrogels may be a potential candidate for numerous wound repair applications.

Scale effect of rock discontinuity considering all morphological information

Having an accurate understanding of the scale effect of surface morphology characteristics is crucial to examining the mechanical behavior of rock structural plane. At present, the quantification and sampling methods of surface morphology show diversity, which is the potential reason for the inconsistent research conclusions on scale effect. Firstly, based on mathematical statistics and correlation analysis, the most representative parameter is proposed from hundreds of morphological parameters. Then, the previous scale effect sampling methods are analyzed. In order to ensure that the selected samples are representative, a novel sampling method, considering all morphological information, is proposed. By means of the novel quantification and sampling methods, the size effect characteristics are systematically analyzed. Under the conditions of different rock types, shear directions and sampling locations, etc., discontinuity roughness does not change significantly with sampling scale. As sampling scale increases, the distribution range of representative samples is gradually concentrated, the total amount decreases, and the proportion increases. However, the distribution of representative samples on the initial structural plane does not show obvious regularity. These findings would provide theoretical support for the deformation control and stability analysis of rock mass in engineering.

Interfacial strength and its regulation in the carbon monofiber/epoxy binder system

The strength of polymer composite materials (CMs) is largely determined by the strength of interfacial interactions at a fiber/matrix interface. In this work the strength in a unit cell of CM carbon monofiber/cured epoxy matrix is investigated. The relevance of the work is due to direct measurements of strength at the monofiber/matrix interface, excluding defects of micro-droplet and technological errors associated with impregnation in a traditional assessment of polymer composite materials strength. Changes of surface morphology and energy characteristics of fibers in plasma chemical treatment process is shown. The study of fiber surface energy and formation of carbon monofiber/epoxy matrix interface of carbon fiber reinforced composite unit cell was carried out on the specially developed original device Drop-Sting test. Micro pull-out test was used to investigate the shear mechanical properties of interface and to determine the strength of carbon fiber reinforced composite unit cells before and after treatment in oxygen discharge plasma. It is shown that the increase in the strength of the monofiber/matrix interfacial interface after the treatment of carbon fiber in plasma occurs due to the increase in the surface energy and wettability of monofibers.

Eggshell membrane and green seaweed (Ulva lactuca) micronized powders for in vivo diabetic wound healing in albino rats: a comparative study

BackgroundNonhealing diabetic wounds are a serious complication associated with extremely lethargic wound closure and a high risk of infection, leading to amputation or limb loss, as well as substantial health care costs and a poor quality of life for the patient. The effects of either eggshell membrane (ESM) and green seaweed (Ulva lactuca) extracts alone or in combination were evaluated for in vivo skin wound healing in a rat model of induced diabetes.MethodsMicronized powders of waste hen ESM, Ulva lactuca, and their 1:1 mixture were prepared using regular procedures. The mechanical, electrical, and surface morphology characteristics of powders were examined using direct compression, LCR-impedancemetry, and scanning electron microscopy. The effect of ESM, Ulva lactuca, and their mixture as compared to standard Dermazin treatments were evaluated on wounds inflicted on male Wistar Albino rats with induced diabetes. Quantitative wound healing rates at baseline and at 3, 7, 14, and 21 days of treatments among all rat groups were conducted using ANOVA. Qualitative histological analysis of epidermal re-epithelization, keratinocytes, basement membrane, infiltrating lymphocytes, collagen fibrines, and blood vessels at day 21 were performed using Image J processing program.ResultsCompressive strength measurements of tablets showed a Young’s modulus of 44.14 and 27.17 MPa for the ESM and ESM + Ulva lactuca mixture, respectively. Moreover, both samples exhibited relatively low relative permittivity values of 6.62 and 6.95 at 1 MHz, respectively, due to the porous surface morphology of ESM shown by scanning electron microscopy. On day 21, rats treated with ESM had a complete diabetic wound closure, hair regrowth, and a healing rate of 99.49%, compared to 96.79% for Dermazin, 87.05% for Ulva lactuca, 90.23% for the mixture, and only 36.44% for the negative controls. A well-formed basement membrane, well-differentiated epithelial cells, and regular thick keratinocytes lining the surface of the epidermal cells accompanied wound healing in rats treated with ESM, which was significantly better than in control rats.ConclusionGround hen ESM powder, a low-cost effective biomaterial, is better than Ulva lactuca or their mixture for preventing tissue damage and promoting diabetic wound healing, in addition to various biomedical applications.

An Evaluation of the Corrosion Inhibition Performance of Chitosan Modified by Quaternary Ammonium Salt for Carbon Steel in Stone Processing Wastewater.

Chitosan was used as the raw material. A quaternization reaction was carried out between 2,3-epoxypropyltrimethylammonium chloride and water-soluble chitosan to prepare quaternary ammonium salt water-soluble chitosan (QWSC), and its corrosion inhibition performance against the corrosion of carbon steel in stone processing wastewater was evaluated. The corrosion inhibition efficiencies of QWSC on carbon steel in stone processing wastewater were investigated through weight loss, as well as electrochemical and surface morphology characterization techniques. The results show that QWSC has superior corrosion inhibition performance for A3 carbon steel. When an amount of 60 mL·L-1 is added, the corrosion inhibition efficiency can reach 59.51%. Electrochemical research has shown that a QWSC inhibitor is a mixed-type corrosion inhibitor. The inhibition mechanisms of the QWSC inhibitor revealed that the positive charge on the surface of carbon steel in stone wastewater was conducive to the adsorption of Cl- in the medium, which produced an excessive negative charge on the metal's surface. At the same time, the quaternary ammonium cation and amino cation formed in QWSC in stone processing wastewater can be physically absorbed on the surface of A3 carbon steel, forming a thin-film inhibitor to prevent metal corrosion.

Structuring of the Surface of Thin Carbon Films During Activation by Microsecond Current Pulses

The influence of current activation by electric pulse breakdown on changes in surface morphology and emission characteristics of a field emission cathode made on the basis of carbon films obtained by deposition in a microwave gas discharge plasma was studied. Current activation of these films was carried out by applying voltage pulses of microsecond duration until an electrical breakdown occurred. It is shown that during activation, the morphology of the film surface in the breakdown region changes with the formation of a micro-sized emitting structure, which significantly improves the field emission characteristics of cathodes based on carbon films.

Efficient removal of tetracycline from water using copper MOFs/bismuth molybdate composite nano adsorbent

A composite nanomaterial comprising of bismuth molybdate and copper-based MOFs (BCuM) was obtained by a facile hydrothermal technique and applied as a nano-adsorbent for the decontamination of wastewater with tetracycline (TC). The nanosorbents' internal elemental constitution, surface morphologic features and internal crystallite structure were analysed using EDS, SEM and XRD techniques. As can be seen from the kinetics of adsorption, the dominating forces of adsorption are chemisorption. At 323 K, the total sorption was in accordance with the Langmuir isotherm reaching 354.610 mg/g. The results of the thermodynamic analysis of the desorption reaction indicate that TC through BCuM occurs spontaneously and is related to an intrinsic heat absorption process. The findings indicated that the BCuM adsorbent showed excellent adsorption over the pH range of 3 ∼ 8 with good reusability. Fourier Transform Infrared (FT-IR) spectroscopy shows that this adsorption is mainly a function of the π-π bonds present in the reaction system of the sorbent and polluting substance. Composite bismuth molybdate nano-adsorbent BCuM of Copper based MOF demonstrated superior adsorption properties and wider application prospects for treating TC from sewage in comparison to single bismuth molybdate nanomaterials.

Novel zirconium phosphate/MXene/ionic liquid membranes for PEM fuel cells operating up to 145°C

In this work, zirconium phosphate, MXene, and a hexyl-based ionic liquid were incorporated into a porous PTFE polymer to synthesize novel composite proton exchange membranes (PEM) for fuel cell applications. The synthesized composite membranes were evaluated for their conductivity at temperatures above the boiling point of water as well as their water uptake properties, thermal stability, surface morphology, and structural characteristics via several characterization techniques. It was observed that the inclusion of MXene had a direct impact on the thermal stability of these membranes and caused substantial structural modifications within the membrane’s matrix. The fabricated membranes displayed a high proton conductivity at room temperature, reaching a peak of approximately 10−2 S/cm when all materials were combined. The membranes exhibited good proton conductivity of 10−4 S/cm at high temperature ranges up to 145℃ and appeared to be stable at higher temperatures, as thermogravimetric analyses showed. The results reported here demonstrate the suitability of the MXene-based synthesized membranes for hydrogen-fueled PEM fuel cell applications. This, in turn, will contribute to enhanced energy efficiency and cleaner energy transition.

Fabrication of multifunctional cotton fabrics with quaternized N-halamine endowing the synergetic rechargeable antibacterial, wound healing and self-cleaning performances

Cotton has attracted considerable attention due to its functional characteristics. The focus of research on cotton has shifted in recent years towards designing multi-functional and modified media for cotton fibers, which can be firmly combined with textiles, giving them reusability and extending their service life. This study constructed a synergistic antibacterial layer of quaternary ammonium compounds (QACs) and N-halamine (Hals) using an in-situ free radical copolymerization method in water, named QACs/Hals@cotton-Cl. The route significantly increases the number of antibacterial active centers. FTIR, XPS, and SEM were used to systematically analyze the product's chemical structure, surface morphology, and other characteristics. The modified fabric's antibacterial efficiency, wound healing, renewability, and durability were also evaluated. The chlorinated modified cotton fabric could completely eradicate S. aureus and E. coli within 10 min. Compared with pure cotton, it notably promoted the healing rate of infected wounds in mice. The modification method imparted excellent hydrophobicity to the cotton fabric, with a contact angle exceeding 130°, making it easy to remove surface stains. After 30 days of regular storage and 24 h of UV irradiation, the active chlorine concentration (Cl+%) only decreased by 25 % and 39 %, respectively, and the reduced Cl+% was effectively recharged via simple re-chlorination. The hydrophobicity and antimicrobial properties of QACs/Hals@cotton-Cl remained stable even after 20 cycles of friction. This simple synthesis technique provides a convenient approach for the scalable fabrication of multifunctional and rechargeable antibacterial textiles, with potential applications in medical devices and personal hygiene protection.

Experimental study on the fracture surface morphological characteristics and permeability characteristics of sandstones with different particle sizes

AbstractTo study the seepage law and sectional morphological characteristics in splitting sandstones of different grain sizes, three‐dimensional morphological scanning tests and seepage characteristics tests are conducted on the splitting rock samples of siltstone, fine‐, medium‐ and coarse‐grained sandstone, and the differences in morphological characteristics and seepage law in different grain size sandstones are compared and analyzed. The test results show that the sections of siltstone and fine‐grained sandstone have the overall morphological characteristics of “one high and one low” with large undulation, while the sections of medium‐ and coarse‐grained sandstone have a more uniform distribution and less undulation. In the relationship between pressure gradient and flow velocity, siltstone and fine‐grained sandstone are precisely characterized by the Forchheimer formula, and medium‐ and coarse‐grained sandstone are well characterized by the Izbash formula, and the fitting effect is good. The results of the study are of great reference significance for improving the cross‐sectional morphological characteristics and seepage law of the splitting rock samples.

A new strategy to prepare ammonium aluminum carbonate hydroxide using plasma electrolytic oxidation in electrolyte containing carbon nanotubes

In this work, a plasma electrolytic oxidation (PEO) technique was used to prepare ammonium aluminum carbonate hydroxide (AACH) in an electrolyte containing carbon nanotubes (CNTs). CNTs were also involved in the composite coating on the surface of 6063 aluminum alloy. The formation mechanism of AACH and effects of CNTs on the microstructure and corrosion behavior of the PEO coatings were investigated. The surface morphology, pore distribution, phase composition, functional groups and electrochemical characteristics of the PEO composite coatings were examined using scanning electron microscopy (SEM), Image Pro software, X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR) and electrochemical workstations, respectively. Results showed that the rod-like AACH was generated around the discharge channel by reacting between ammonia, carbon dioxide and AlOOH under transient high temperature and high pressure environment with the presence of CNTs. The surface micropores of the composite coatings were enlarged due to the excellent electrical conductivity of CNTs. With the by addition of CNTs of 1.5 g/L, the self-corrosion current of the coating was the smallest, and the polarization resistance Rp was larger than that of 1.0 g/L and 2.0 g/L CNTs.

Chemical bath co-deposition of Co3O4 and In2O3 on TiO2 nanotubes, aiming for photoanodes with improved photoelectrochemical properties

This study investigates the implications of the deposition of Co3O4 and In2O3 onto TiO2 nanotube thin films for the photoelectrochemical activity of TiO2 nanotubes (TNTs). Initially, TiO2 nanotubes were fabricated through an electrochemical anodizing process. Subsequently, a facile chemical bath deposition (CBD) method was used to deposition Co3O4 and In2O3 oxides. The resulting composites are used as photoanodes for the photoelectrochemical cathodic protection of AISI304 stainless steel (304SS) in marine environments. The surface morphology, compositions, crystalline structures, and optical characteristics of samples were examined using a combination of FESEM, TEM, EDX, XPS, XRD, and UV-Vis absorption spectroscopy. Electrochemical measurements under both illuminated and dark conditions were conducted to assess the photoelectrochemical characteristics of synthesized samples. The optimal co-deposited photoanode, significantly shifted the open circuit potential of the coupled AISI 304SS to −708 mV under intermittent light exposure, demonstrating appropriate photocathodic protection (PCP) performance. This potential was further enhanced and maintained at −720 mV for an hour in continuous light tests. Additionally, the photoanodes showed some degrees of delayed cathodic protection even after the light was switched off. The Co3O4-In2O3-modified TNTs composite exhibits superior photoelectrochemical cathodic protection activity due to the synergistic effects of Co3O4 and In2O3 nanoparticles.

Electroactive Shewanella algae accelerates the crevice corrosion of X70 pipeline steel in marine environment

Crevice corrosion causes severe damage to metallic materials in marine environments. The inner mechanism of crevice corrosion in the presence of microbes deserves in-depth investigation. Herein, the electroactive Shewanella algae was found to accelerate the crevice corrosion of X70 pipeline steel through weight loss analysis, electrochemical tests, characterization of surface morphology, and analysis of corrosion products. The corrosion current increased to 2.3 μA cm−2, which was 2.3 folds of that in a sterile medium. Further electrochemical tests were carried out with exogenous addition of riboflavin. It confirmed that extracellular electron transfer accelerated the crevice corrosion in which S. algae participated.

Accelerating antibiotic degradation by integrating tertiary magnetic ZnFe2O4/BiVO4/rGO heterojunction with ozone-nanobubbles

In this study, ZnFe2O4, BiVO4, and ZnFe2O4/BiVO4/rGO materials were synthesized using the hydrothermal method in mild conditions to study the oxytetracycline (OTC) degradation process. The results on surface morphology, functional group, structure, and optical and electrochemical characteristics revealed that ZnFe2O4/BiVO4/rGO were successfully prepared with high purity and good distribution of chemical elements. The impact of different parameters like pH, catalyst load, reaction time, initial OTC concentration, and the presence of ozone-nanobubbles on the OTC degradation efficiency was systematically examined to obtain optimal treatment conditions. Synergic effects between ozone-nanobubbles and ZnFe2O4/BiVO4/rGO heterojunction led to an enhancement of over 20 % of OTC degradation yield. The OTC degradation reached 96.3 % within 100 min at optimal conditions (pH 7.0, [Cat.] = 0.5 g/L, and [OTC] = 20 mg/L). The combination of ZnFe2O4 and BiVO4 allowed to benefit from the generation of both effective electrons and holes, which enhanced the generation rate of both superoxide and hydroxyl radicals responsible for degrading the pollutant in water while rGO sheets contributed to slowing down the recombination rate between electrons and holes and improving the photocatalytic activities of the ZnFe2O4/BiVO4/rGO. Liquid chromatography-mass spectrometry (LC-MS) analyses were deployed to figure out intermediate substances and possible degradation pathways of the OTC degradation process. The ZnFe2O4/BiVO4/rGO heterojunction exhibited a pretty good durability and stability, and was easily recovered with the aid of a magnet. The toxicity of the by-products was significantly declined compared to the OTC antibiotic.

Fe2TiO5 nanoparticle-based novel gas sensor with high response to ethanol and acetone

This paper presents a novel Fe2TiO5 sensing material for ethanol and acetone detection. Pure Fe2TiO5 nanomaterial was synthesized by a combined solvothermal and calcination method using ferrous sulfate as precursor and urea as a surfactant. The microstructure and surface morphology indicate that Fe2TiO5 belongs to the orthorhombic crystal structure with a Bbmm space group and is composed of loose aggregates of irregular nanoparticles (20–30nm) and abundant pores. X-ray photoelectron spectroscopy analysis indicates that the Fe2TiO5 aggregates contain mixed valence states of Fe2+ and Fe3+ and abundant oxygen vacancies. Examination of gas sensing properties suggests that Fe2TiO5 is an excellent gas-sensitive material. Particularly, at a low optimum operating temperature (240 °C), the gas response of the Fe2TiO5 aggregates to 100 ppm ethanol and acetone is as high as 84.1 and 220.9, respectively. The linear relationship between log(S-1) and logC indicates that Fe2TiO5 can accurately detect ethanol and acetone over a wide concentration range. The gas-sensing performance of the novel Fe2TiO5 nanomaterial can be explained based on the synergistic effect of oxygen vacancy defects and the characteristic surface morphology.

Enhancement of the microwave absorption properties of the SrFe12O19@Fe3O4@rGO composite material

In this work, graphene oxide (GO) was prepared via the Hummers’ method, whereas SrFe12O19, SrFe12O19@Fe3O4, and SrFe12O19@Fe3O4@rGO were fabricated using the hydrothermal techniques. The samples' phase structure, surface morphology, magnetic properties, and electromagnetic wave absorption characteristics were studied and compared. Findings show that the Fe3O4 particles adhered to the surface of the SrFe12O19 hexagonal plates, and the combination of SrFe12O19@Fe3O4 foam flakes and two-dimensional graphene rGO could enhance the absorption electromagnetic wave performance. The composite SrFe12O19@Fe3O4@rGO sample exhibited an ideal impedance matching within the frequency f range of 11 GHz–12.4 GHz. The minimum reflection loss reached −62.3 dB at 12.2 GHz with a thickness of 2 mm. With a thickness of 2 mm, the effective absorption bandwidth obtained the value of −20 dB, covering a range of 9.3 GHz. The composite SrFe12O19@Fe3O4@rGO sample, which shows the highest performance both in reflectivity and bandwidth, can find potential application in microwave absorptions.