NEW CARBON MATERIALS
·
2021
·
IF 1.905
Ai-li Yang,Sheng-ya Yang,Yu-kuan Zhu
Used tea leaves, or tea waste (TW), were crushed into powder and mixed with graphene oxide (GO) in water, followed by adjusting the pH value of the resulting suspension with ammonia to 11, adding FeCl 2 ·4H 2 O under magnetic stirring, filtration and drying to prepare a rGO/Fe 3 O 4 /TW (with mass ratios of 1:2:1) hybrid material. The structure and crystalline phases of the material were characterized by FTIR and XRD. Isotherms for uranium adsorption were obtained and its kinetics were measured in a conical bottle that was placed in a shaker. The effects of the pH value of the uranium solution, adsorption time and initial concentration on the uranium adsorption were investigated. Results indicate that the hybrid has a much faster adsorption rate than TW with a uranium removal rate up to nearly 100% in 20 min for an initial uranium concentration of 10 mg L −1 . The maximum adsorption capacity of the hybrid is 103.84 mg g −1 while that of TW is 97.70 mg g −1 . The hybrid with adsorbed uranium can be easily separated from the solution by applying a magnetic field. The isotherms and kinetics of uranium adsorption on the hybrid are best fitted by the Langmuir isotherm model and the pseudo-second-order model, respectively. The hybrid has good reusability with an uranium removal rate of about 85% after 5 cycles.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Magnetochemistry
·
2026
·Vol. 12
·期 7
·74
·
IF 2.8
Bin Chen,Ge Gao,Yuhua Liu,Wei Ding,Hong Li
Conventional water treatment relies on sequential flocculation and disinfection, which inflates infrastructure costs and heightens the risk of disinfection byproduct formation. Here, we report a magnetic lignin-based flocculant (LS-DMC-AM@Fe3O4) that integrates flocculation, sterilization, and rapid magnetic separation within a single material. The composite was synthesized by thermally initiated graft copolymerization of methacryloyloxyethyl trimethylammonium chloride (DMC) and acrylamide (AM) onto sodium lignosulfonate (LS), followed by incorporation of Fe3O4nanoparticles (NPs) at 15 wt% loading; the product exhibited a saturation magnetization of 12.8 emu g−1. LS-DMC-AM@Fe3O4achieved 98.2% kaolin turbidity removal at 1 mg L−1and 98.6%E. coliremoval at 8 mg L−1, and displayed a markedly broader effective dosage window than its non-magnetic analog. We attribute this broadened window to Fe3O4-enhanced membrane disruption, which liberates anionic intracellular contents that buffer excess cationic charge and thereby suppress restabilization. The bactericidal efficiency reached 90% at 18 mg L−1, 1.6-fold higher than LS-DMC-AM, governed by a synergistic dual mechanism: quaternary ammonium contact-killing coupled with Fe3O4NP-induced intracellular reactive oxygen species (ROS) accumulation. Under an external magnetic field, flocs underwent rapid phase separation and displayed enhanced shear-regrowth capacity (E. colifloc recovery factor: 53% vs. 26%); Fe3O4NPs were recovered at >95% efficiency over two cycles. Despite higher unit production costs, LS-DMC-AM@Fe3O4delivers competitive per-unit-volume treatment economics through its ultralow effective dosage and magnetic seed recyclability. These results establish a viable strategy for engineering multifunctional, recyclable flocculants from industrial lignin waste.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Jianfei Zhang,Chengyi Chu,Aihua Sun,Si Ma,Xuanxuan Qiao,Chongyang Wang,Jianjun Guo,Zhixiang Li,Gaojie Xu
The double-sided structural color of Fe 3 O 4 @SiO 2 NPs under external electric field was found. Corresponding colloidal suspension of Fe 3 O 4 @SiO 2 showed a highly adjustable structure color change on both sides of the display cell with the applying of electric fields. As the applied voltage increased, the color changed from red to green then to blue at positive plate, at the same time, the color changed from red to gray then to red at the negative plate. Under a certain electric field, the reflection peak move backwards within a particular range of wavelength. It may be caused by the emergence of another repulsive force-“solvation force” at small interparticle distances.
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 20
·3699
·
IF 5.719
Congyi Qian,Xiaohui Liang,Mei Wu,Xingxin Zhang
A lightweight microwave-absorbing material with a strong electromagnetic-absorption capability of practical significance in the field of electromagnetic compatibility was obtained by adjusting the ratio of Fe3O4and rGO. A nanoparticle material with a chain-typed structure consisting of a combination of Fe3O4and rGO was produced by a hydrothermal method under an applied magnetic field. The electromagnetic loss property of the Fe3O4@rGO composites is studied in the frequency range from 2 to 18 GHz. In addition, the reflection loss and the mechanism of microwave absorption are explored. By changing the amounts of rGO, the electromagnetic loss of the Fe3O4@rGO composites can be effectively regulated, which obtain better reflection loss. The minimum reflection loss of the Fe3O4@rGO composites is −49.4 dB at 16.2 GHz only with a thickness of 1.75 mm. Thus, the Fe3O4@rGO composites have an extremely thin thickness and a strong electromagnetic wave absorption capacity, which is a candidate for the development of lightweight magnetic absorbing materials.Keywords:magnetic composites;microwave absorption;electromagnetic loss;lightweight
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 7
·9640-9649
·
IF 2.478
Ding Xiao,Fan Guang,Huang Yi,Wang Jianguo
Reduced graphene oxide-molybdenum disulfide (RGO-MoS 2 ) loaded Fe 3 O 4 nanoparticles composite (RGO-MoS 2 -Fe 3 O 4 ) is prepared via two-step hydrothermal reaction. RGO-MoS 2 possesses three dimension architecture structures. This structure can prevent RGO and MoS 2 nanosheets restacked together and provide substrates for the Fe 3 O 4 nanoparticle decoration. The sizes of Fe 3 O 4 are in the range of 5–20 nm. As a microwave absorbent: the minimum reflection loss (R L ) value is -47.67 dB at 17.44 GHz when the thickness is only 1.5 mm. The absorption bandwidth (R L < −10 dB) can reach 4.72 GHz with the thickness is 1.7 mm. Compared with the previously reported literature, RGO-MoS 2 -Fe 3 O 4 nanocomposite exhibits excellent microwave absorption performance and can be served as an light-weight microwave absorber.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2021
·
IF 5.268
Marhaba Mamat,Xiaofeng Wang,Lin Wu,Rong Zhao,Jin Cao,Xueyong Qi,Song Shen
The hypoxic tumor environment prevents the generation of reactive oxygen species (ROS), reducing the therapeutic efficiency. We construct oleylamine (OA) coated CaO 2 /Fe 3 O 4 nanocomposites to realize oxygen-independent generation of ROS and high efficient treatment of cancer. In the tumor site, CaO 2 reacts with water to generate H 2 O 2 , which can be catalized by Fe 2+ that is produced by Fe 3 O 4 , to form highly toxic hydroxyl radicals (∙OH). To inhibit the premature reaction, CaO 2 /Fe 3 O 4 nanoparticles were coated with pH sensitive OA. The nanocomposites exhibited remarkable tumor growth inhibition ability and favorable biocompatibility, holding a great potential for hypoxic tumor therapy.
研究领域:
纳米医学
·
癌症治疗
·
材料科学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 7
·496
·
IF 5.4
Yao Haixu,Wang Yan,Shi Jincheng,Gao Xinzhuo,Yang Xueqiong,Liu Mengyuan,Li Yuxin,Jin Yingyu,Zhou Qin,Cui Feiyun
Real-time, synchronous profiling of key inflammatory cytokines such as IFN-γ, IL-6 and TNF-α is critical for understanding and managing dysregulated immune responses, including cytokine storms associated with severe infections. However, conventional immunoassays are not readily compatible with the requirements of rapid, multiplexed analysis in point-of-care settings. Herein, we report a multiplexed electrochemical biosensing platform based on biomimetic interfacial encoding using Fe 3 O 4 @Au nanoplatforms (BIENs). The core sensing element consists of extracellular vesicle-mimetic nanocomposites functionalized with cell membranes overexpressing specific cytokine receptors, enabling native-like molecular recognition. This encoded biomimetic interface affords high-affinity and selective detection of IFN-γ, IL-6 and TNF-α with wide linear ranges (0.1 ~ 1000 pg/mL) and low detection limits (0.043 ~ 0.159 pg/mL). The sensor exhibits excellent selectivity, operational stability, and reproducibility, and maintains high accuracy in serum samples with minimal matrix interference. Beyond analytical performance, this work establishes a receptor-mimetic interfacial encoding strategy for multiplexed biosensing, offering a versatile and scalable paradigm for the development of next-generation intelligent biointerfaces and dynamic immune monitoring systems. Graphical
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·Vol. 8
·期 15
·12992-13005
·
IF 5.2
Wang Guoyong,Dai Weifan,Peng Shuping,Li Xiaofen,Wu Jiaxiang,Sun Bingxin,Shuai Cijun
Chronic osteomyelitis is a severe clinical challenge
due to its
high recurrence rates and poor antibiotic penetration. Microwave thermal
therapy (MTT) has emerged as a potential strategy to address these
issues owing to its noninvasiveness and deep tissue penetration. However,
its therapeutic efficacy is often limited by single-component microwave
sensitizers with low conversion efficiency and poor impedance matching.
In this study, a Fe 3 O 4 /Prussian blue heterointerface
(Fe 3 O 4 /PB) was synthesized and integrated into
poly- l -lactic acid (PLLA) scaffolds via selective laser sintering
to develop a microwave-responsive therapeutic platform for osteomyelitis
treatment. Benefiting from Fe 3 O 4 /PB, the scaffold
exhibited optimized electromagnetic parameters through the synergistic
contributions of magnetic loss, dielectric loss, and interfacial polarization,
thereby improving impedance matching and microwave absorption capability.
Under microwave irradiation, the scaffold rapidly heated to ∼45
° C within 10 min and simultaneously generated abundant reactive
oxygen species, enabling a combined thermal-dynamic antibacterial
effect. In vitro assays demonstrated that the scaffold achieved bactericidal
rates of up to 94.7% against both Staphylococcus aureus and E. coli while inhibiting biofilm
formation by more than 80%. Overall, this study introduces a scaffold-based
strategy for treating osteomyelitis by combining microwave thermal
and dynamic therapies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 10
·691
·
IF 3.2
Danli Yao,Cheng Rong
Radar absorbing materials (RAMs) for electromagnetic wave attenuation and EMI mitigation are increasingly required to exhibit broadband microwave absorption and low density. However, pure graphite suffers from poor impedance matching, lack of magnetic loss (resulting in weak low-frequency absorption), and excessive thickness requirements, while pure Fe 3 O 4 has limited broadband absorption capability. To address these issues, Fe 3 O 4 /graphite composites with mass ratios ranging from 5:0 to 5:8 were prepared via an in-situ solvothermal method, integrating magnetic loss from Fe 3 O 4 and dielectric loss from graphite to achieve synergistic microwave absorption. XRD, SEM–EDS, VSM, and vector network analyzer measurements were carried out. Results showed that Fe 3 O 4 formed a pure cubic spinel phase, with nanoparticles uniformly dispersed on graphite sheets, creating layered mixed interfaces. As the graphite content increased, saturation magnetization decreased steadily, consistent with the magnetic phase dilution model. The microwave absorption originated from the synergistic effect of Fe 3 O 4 ’s natural resonance (magnetic loss) and graphite’s dielectric loss (via multiple scattering and interface polarization). Among the samples, the 5:4 ratio composite exhibited a minimum reflection loss of –62.48 dB at 4.88 GHz with a thickness of 4.5 mm, attributed to near-optimal impedance matching and a high attenuation constant. The 5:2 ratio composite achieved the widest effective absorption bandwidth of 4.48 GHz (13.28–17.76 GHz) at 1.5 mm thickness. These Fe 3 O 4 /graphite composites demonstrate promising microwave absorption performance with low density, making them strong candidates for lightweight radar-absorbing structures, where broadband effectiveness and mass efficiency are critical design considerations.
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Lican Chen,Minzhen Bao,Yu Wang,Weigang Zhang,Yanjun Li,Tiancheng Yuan
Hierarchical carbon/Fe 3 O 4 composites were successfully fabricated using wood as a sustainable carbon precursor via in situ magnetic nanoparticle loading and subsequent carbonization. Benefiting from the intrinsic porous cellular architecture of wood and the homogeneous anchoring of Fe 3 O 4 nanoparticles, the resulting composites exhibit a synergistic combination of conductive loss, magnetic loss, and interfacial polarization. Systematic electromagnetic characterization reveals that the optimized composite delivers a minimum reflection loss of −59.21 dB at a thin matching thickness, along with a broad effective absorption bandwidth covering multiple frequency regions. The enhanced microwave absorption performance is primarily attributed to the improved impedance matching induced by hierarchical porosity, multiscale interfaces, and the balanced dielectric-magnetic loss mechanisms. This work demonstrates a feasible strategy for converting renewable biomass into high-performance, lightweight, and broadband microwave absorbers, highlighting significant potential for electromagnetic interference shielding and stealth applications.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Luyao Su,Huili Liu,Chenyang Zhu,Zidan Jia,Xiangang Meng,Bingjian Wang,Cao Ma,Xinpei Kong,Dongyu Bai
Stereocomplex polylactide composite microspheres decorated with ferroferric oxide nanoparticles (SC-PLA@Fe 3 O 4 ) with excellent photocatalysis and magnetic recyclability were successfully prepared via a facile strategy combining phase separation and Fe 3 O 4 surface modification. First, poly(ethylene oxide) (PEO) was used as the phase-separation agent and porogen to trigger phase separation of the PEO/SC-PLA blend and produce SC-PLA microspheres with porous surfaces. Subsequently, SC-PLA@Fe 3 O 4 composite microspheres were fabricated by immobilizing Fe 3 O 4 nanoparticles onto porous SC-PLA microspheres via polydopamine adhesion. The results revealed that the as-prepared SC-PLA microspheres consisted exclusively of SC crystallites, and their porous surface was highly favorable for the immobilization of Fe 3 O 4 nanoparticles. With increasing Fe 3 O 4 dosage, the Fe 3 O 4 loading within SC-PLA@Fe 3 O 4 composite microspheres rose gradually, alongside an increase in diameter from 2.49 to 2.98 μm. SC-PLA@Fe 3 O 4 composite microspheres exhibited superior photocatalytic activity toward methylene blue (MB) degradation, with a maximum MB removal efficiency of 87.65%. Kinetic results indicated that MB degradation conformed well to the pseudo-second-order model via synergistic surface adsorption and photocatalytic oxidation. Moreover, SC-PLA@Fe 3 O 4 composite microspheres possessed rapid magnetic responsiveness and outstanding cyclic reusability, retaining a degradation efficiency exceeding 83% after five cycles. This work offers significant guidance for the fabrication and application of functional SC-PLA microspheres. Download: Download high-res image (137KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Food Bioscience
·
2026
·
IF 6.2
Xiao-Feng Chen,Xiang-Yu Huang,Hao-Ran Liu,Li Ding,Li Wen,Xu-Feng Wang,Zhou Xu,Yun-Hui Cheng,Mao-Long Chen
This study presents an effective strategy for the screening and enrichment of antioxidant peptides from soybean protein using Fe 3 O 4 -modified carbon fibers with abundant metal-binding sites. Successful material synthesis was confirmed via scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) and X-ray diffraction (XRD) analyses. Under optimized adsorption conditions, an adsorption ratio of 22.95% was achieved, and the resulting peptide fractions displayed significantly enhanced antioxidant activity. Through integrated Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) analysis, bioactivity prediction tools, four high-activity peptides were identified: KFFFR, RYFPF, FLWLR, and WERLY. Among them, WERLY exhibited the most potent antioxidant properties, with IC 50 values of 0.437, 0.638, 0.182, and 0.583 mg/mL for ABTS, superoxide, hydroxyl radical scavenging, and ferrous ion chelation, respectively. Notably, its hydroxyl radical scavenging capacity was comparable to that of the positive control, glutathione. Cellular assays further demonstrated that WERLY protected HepG2 cells against oxidative damage, as evidenced by increased activities of Catalase (CAT), Superoxide Dismutase (SOD), and Glutathione Peroxidase (GSH-Px), along with reduced Malondialdehyde (MDA) levels. Molecular docking and molecular dynamics simulations suggested that WERLY may interact with the Keap1 protein, providing supportive insight into its potential involvement in cellular antioxidant defense mechanisms. However, the precise molecular mechanism requires further validation. Overall, this study demonstrates that Fe 3 O 4 -modified carbon fibers provide an efficient platform for screening antioxidant peptides from soybean protein, offering a promising strategy for the development of functional bioactive peptides.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）