Bioactive Materials
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2024
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IF 18
Ying Jin,Hang Liu,Lei Chu,Jin Yang,Xiuyang Li,Hang Zhou,Haitao Jiang,Lei Shi,Jason Weeks,Joshua Rainbolt,Changjiang Yang,Thomas Xue,Haobo Pan,Zhongliang Deng,Chao Xie,Xu Cui,Youliang Ren
Implant-associated Staphylococcus aureus ( S. aureus ) osteomyelitis is a severe challenge in orthopedics. While antibiotic-loaded bone cement is a standardized therapeutic approach for S. aureus osteomyelitis, it falls short in eradicating Staphylococcus abscess communities (SACs) and bacteria within osteocyte-lacuna canalicular network (OLCN) and repairing bone defects. To address limitations, we developed a borosilicate bioactive glass (BSG) combined with ferroferric oxide (Fe 3 O 4 ) magnetic scaffold to enhance antibacterial efficacy and bone repair capabilities. We conducted comprehensive assessments of the osteoinductive, immunomodulatory, antibacterial properties, and thermal response of this scaffold, with or without an alternating magnetic field (AMF). Utilizing a well-established implant-related S. aureus tibial infection rabbit model, we evaluated its antibacterial performance in vivo . RNA transcriptome sequencing demonstrated that BSG + 5%Fe 3 O 4 enhanced the immune response to bacteria and promoted osteogenic differentiation and mineralization of MSCs. Notably, BSG + 5%Fe 3 O 4 upregulated gene expression of NOD-like receptor and TNF pathway in MSCs, alongside increased the expression of osteogenic factors (RUNX2, ALP and OCN) in vitro . Flow cytometry on macrophage exhibited a polarization effect towards M2, accompanied by upregulation of anti-inflammatory genes (TGF-β1 and IL-1Ra) and downregulation of pro-inflammatory genes (IL-6 and IL-1β) among macrophages. In vivo CT imaging revealed the absence of osteolysis and periosteal response in rabbits treated with BSG + 5%Fe 3 O 4 + AMF at 42 days. Histological analysis indicated complete controls of SACs and bacteria within OLCN by day 42, along with new bone formation, signifying effective control of S. aureus osteomyelitis. Further investigations will focus on the in vivo biosafety and biological mechanism of this scaffold within infectious microenvironment.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2024
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IF 4
Xiaoxue Liu,Yangping Wen,Wentao Hu,Xinyu Lu,Lili Chen,Li Zhao,Qian Zeng,Huiyi Tang,Yanping Hong,Kaijie Tang
The label-free immunosensing technique is highly valued for its sensitivity and specificity, and advantages of simple preparation, fast detection (one-step), and rapid signal response. However, the sensitivity, stability, and specificity of this technique not only depend on the performance of antibodies, but also on the immunosensing interface of the bare glassy carbon electrode (GCE). This includes factors such as electrical conductivity , biocompatibility , and antibody loading capacity. In this study, carboxyl multiwalled carbon nanotubes-ferrosoferric oxide-graphene oxide (COOH-MWCNTs-Fe 3 O 4 -GO) was screened as the modified material of GCE to create an ideal immunosensing interface for the biological reaction between antibody-sulfadimidine (anti-SM2) and SM2. The structure of both nanomaterials and the immunosensor were characterized. The nanohybrid exhibited a uniform interwoven structure of laminar and tubular components. This unique structure allows for a higher capacity for antibody loading. Based on this, a novel electrochemical immunosensor was constructed using COOH-MWCNTs-Fe 3 O 4 -GO/GCE, which exhibited a high anti-SM2 loading capacity and a rapid detection time of 30 min. The immunosensor exhibited a linear detection range of 0.01–100 ng/mL for SM2, with a limit of detection (LOD) of 0.003 ng/mL and a limit of quantification (LOQ) of 0.01 ng/mL. Additionally, satisfactory recoveries ranging from 94.40% to 109.00% were achieved in crayfish samples, with a relative standard deviation (RSD) of 4.97–8.64%. A novel immunosensors for highly sensitive detection of SM2 has been developed, which may provide an alternative idea for determination of SM2 in crayfish and other seafood.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2024
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IF 5.9
Zhi-Jie Liu,Hong-Liu Jiang,Jian-Wu Xiao,Hu-Wei Lv,Fu-An He,Jing-Shui Xu,Qing-Di Hu,Feng-Tao Zeng,Eder C. Lima,Ahmad Hosseini-Bandegharaei
A novel adsorbent, aminated Fe 3 O 4 (Fe 3 O 4 -NH 2 )/graphite oxide (GO)/carboxylated cross-linked β-cyclodextrin polymer (CDP-COOH) composite, was fabricated for influential removal of various types of dyes from waters. The morphology and structure of resulting Fe 3 O 4 -NH 2 /GO/CDP-COOH composite was studied by SEM, two-dimensional EDS map, FTIR, WAXD, XPS, TGA, and zeta potential meter, and its saturation magnetization was determined to be 46.3 emu/g by VSM. The maximal sorption capacities of Fe 3 O 4 -NH 2 /GO/CDP-COOH composite for methylene blue (MB, as a model of cationic dyes) and Congo red (CR, as a model of anionic dyes) at 303 K were 201.75 mg/g and 2211.05 mg/g, respectively, which can be mainly assigned to multiple adsorptive forces like electrostatic attractions, hydrogen bonds, host–guest self-assembly interactions, π-π electron cloud interactions, and Lewis acid-base interactions. The dye sorption by the Fe 3 O 4 -NH 2 /GO/CDP-COOH composite had a spontaneous nature according to the sorption thermodynamic calculation and can be well explained by pseudo-second-order model. The Langmuir and Freundlich models could explain the sorption isotherms of Fe 3 O 4 -NH 2 /GO/CDP-COOH composite for MB and GO, respectively. The Fe 3 O 4 -NH 2 /GO/CDP-COOH composite possessed many other advantages including the good sorption capability for different heavy metal ions (like Pb 2+ , Ni 2+ , and Cu 2+ ) and organic compounds (like dichlorophenol and propranolol) as well as the good recyclability and reusability.
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TALANTA
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2015
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IF 3.545
Mei Xu,Minhua Liu,Meirong Sun,Kun Chen,Xiujun Cao,Yaoming Hu
In this paper, novel core–shell structured magnetic Fe 3 O 4 /silica nanocomposites with triblock-copolymer grafted on their surface (Fe 3 O 4 @SiO 2 @MDN) were successfully fabricated by combining a sol–gel method with a seeded aqueous-phase radical copolymerization approach. Owing to the excellent characteristics of the strong magnetic responsivity, outstanding hydrophilicity and abundant π-electron system, the obtained core–shell structured microspheres showed great potential as a magnetic solid phase extraction (MSPE) adsorbent. Several kinds of phthalate esters (PAEs) were selected as model analytes to systematically evaluate the applicability of adsorbents for extraction followed by gas chromatography–mass spectrometry (GC–MS) analyses. Various parameters, including adsorbents amounts, adsorption time, species of eluent , and desorption time were optimized. Under the optimized conditions, Validation experiments such as recovery, reproducibility, and limit of detection were carried on and showed satisfactory results. The analysis method showed excellent linearity with a wide range of 0.2–10 mg/kg ( R 2 >0.9974) and low limits of detection (LOD) of 0.02–0.09 mg/kg ( S / N =3). Ultimately, the novel magnetic adsorbents were successfully employed to detect the PAEs in apparel textile samples. And the results indicated that this novel approach brought forward in the present work offered an attractive alternative for rapid, efficient and sensitive MSPE for PAEs compounds.
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ENERGY
·
2024
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IF 9
Bingshuo Li,Aorong Ding,Tianhua Yang,Zhuo Wang,Haijun Zhang,Xingping Kai,Rundong Li
Hydrodeoxygenation (HDO) of phenols has significant potential for the synthesis of cycloalkane. In this study, a Ni-based magnetic molecular sieve catalyst, Ni/HZSM-5@SiO 2 @Fe 3 O 4 , was carefully prepared and systematically characterized using various analytical methods. A screening of the HDO reaction conditions was carried out using a typical phenolic compound of 4-ethylphenol. Under the optimal reaction conditions (240 °C, 3 h) with n-dodecane as the solvent, the 6 % Ni/HZSM-5@SiO 2 @Fe 3 O 4 catalyst showed excellent performance, achieving a 4-ethylphenol conversion of 59.3 % and an ethylcyclohexane selectivity of 85.1 %. In comparison to conventional Ni/HZSM-5, the magnetic micromesoporous molecular sieve catalyst exhibited superior catalytic activity, alkane selectivity and recyclability, with a catalyst recovery ratio of 95 %. Furthermore, the effect of liquid-solid mass transfer efficiency on the ethylcyclohexane selectivity considering of the stirring speed was studied, and the selectivity was increased from 81.6 to 85.1 % when the speed was increased from 400 to 600 rpm. This finding was further substantiated by Fluent numerical simulation. To elucidate the HDO pathway of 4-ethylphenol on Ni/HZSM-5@SiO 2 @Fe 3 O 4 , a comprehensive reaction pathway was proposed, providing insights into the catalytic mechanism.
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MATERIALS CHEMISTRY AND PHYSICS
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2024
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IF 4.3
Huijie Qin,Tongwei Zhang,Lihong Bao,Bo Dang,Jianxi Li
The high flammability of ethylene vinyl acetate copolymers (EVA) limits its important applications in fire safety, and the addition of highly effective flame retardants can improve this deficiency. Melamine cyanurate (MCA) has limited carbon-forming ability and therefore is often combined with other flame retardants to achieve synergistic flame retardant effects and thus improve the flame retardancy of EVA. Therefore, in this study, MoS 2 @Fe 3 O 4 hybrid materials were synthesized by in-situ growth of molybdenum disulfide (MoS 2 ) and ferric oxide (Fe 3 O 4 ) and their structures were characterized using various techniques. The hybrids were blended with melamine cyanurate (MCA) into ethylene vinyl acetate copolymer (EVA) by melt blending method to reduce the fire hazard. The EVA composites with 1.0 wt% MoS 2 @Fe 3 O 4 blends significantly improved the coke residue and limiting oxygen index values to 22.5 % and 23.2 %, while their peak heat release rate, total heat release, and total smoke release were reduced by 62.5 %, 11.7 %, and 35.3 %, respectively, as compared to pure EVA. The results suggest that the use of MoS 2 @Fe 3 O 4 hybrids in combination with MCA is a promising strategy for the development of advanced flame-retardant materials.
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MATERIALS RESEARCH BULLETIN
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2024
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IF 5.3
Siyuan Zhang,Zisen Li,Jinlei Tao,Jian Jiao
Optimizing the composition and structure of polymers and carbon nanomaterials to obtain composite films with excellent mechanical and electromagnetic wave (EMW) properties is an excellent solution for exploring EMW absorbing materials. In this work, a flexible composite film with a regular three-dimensional network structure was designed and prepared. The modified rGO@MWCNTs/Fe 3 O 4 -PVA composite nanofilm with optimized composition and structure has a multi-component heterogeneous interface, three-dimensional network structure. The composite film has high EMW absorption performance, excellent flexibility, mechanical strength and stability, and can be used in a wide range of application scenarios. At a thickness of 2.8 mm, the effective absorption bandwidth ( f E ) reaches 3.72 GHz, the minimum reflection loss (RL min ) is -48.99 dB, and the tensile stress reaches 32 MPa. This work realizes the regulation of the mechanical properties and EMW absorbing properties of the composite film, and provides an efficient and stable flexible composite EMW absorbing material.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Xiaopeng Han,Huiwu Cai,Guangheng Wang,Shuai Zhang,Xudong Liu,Ying Huang
Hierarchical structural design has been verified as a feasible strategy to fabricate effective electromagnetic wave (EMW) absorbers, so we designed hierarchical core–sheath composites with magnetic particles and dielectric layers. In this work, a hierarchical structure of carbon fiber (CF)@Fe3O4@MoS2 (CPDF7-M) was prepared by introducing Fe3O4 and depositing MoS2 layers on the surface of fibers. Due to the synergistic effects from the CF@Fe3O4 increasing the conductive and magnetic loss and the outer MoS2 layers improving the impedance matching, the optimal reflection loss (RL) value was −63.1 dB at 2.7 mm and the effective absorption bandwidth (EAB) was 9.1 GHz covering the X and Ku band. Moreover, the EAB values were adjusted with a specific MoS2 loading at different thicknesses, which provided the necessary reference for the construction of efficient and flexible absorbers in the EMW absorption fields.
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ACS Applied Polymer Materials
·
2025
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IF 4.7
Jie Hu,Yuheng Zhang,Xin Wang,Xuezhong Gong,Zhongjie Cheng,Yao Wang,Sui Mao,Alexander Fainleib,Peter Strizhak,Jianguo Tang
In this study, a hierarchical reinforcement with multiple structures is innovated to improve the mechanical properties of short carbon fiber-filled epoxy resin composites (SCFs-EP) through the carbon fiber surface modification by Fe3O4 nanocluster-anchored unzipped carbon nanotubes (CNTs). The results demonstrate that the Fe3O4–unzipped CNTs (Fe3O4–UCNTs)-assisted SCFs-EP exhibit enhanced mechanical properties, tensile strength, and flexural strength up to 200 and 267 MPa, respectively, which are 300 and 231% higher than that of the pure epoxy matrix. The dominant fracture mechanism of the optimized SCFs-EP changes from adhesive failure to cohesive failure after the incorporation of Fe3O4–UCNTs composites. The enhancement effect is mainly attributed to the Fe3O4-terminated nanostructures of finely rebuilt CNTs, which offer sufficient chemical bonding and admirable pinning effect at the interface. Additionally, a large amount of Fe3O4–UCNTs hybrids endow the interface with a favorable modulus transition, decreasing the stress concentration. This research provides a promising strategy to realize substantial reinforcement of short carbon fiber-based composites by optimizing interfacial interactions.
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ENVIRONMENTAL RESEARCH
·
2025
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IF 7.7
Runnan Zhang,Yanyan Liu,Wanqi Ou,Yuying Ye,Kai Xu
Polycyclic Aromatic Hydrocarbons (PAHs) are persistent organic pollutants that are widely present in aquatic environments and pose a significant threat to the ecological environment and human health. This study introduces a novel magnetic biochar-supported metal oxide catalyst (CeO 2 /BC@Fe 3 O 4 , CBF) as a peroxymonosulfate (PMS) activator in phenanthrene (PHE) degradation in aqueous environments. The degradation performance of the CeO 2 /BC@Fe 3 O 4 composite material was investigated through degradation experiments. The results showed that under the optimal reaction conditions, the degradation efficiency of 20 mg/L PHE solution within 60 minutes could reach 99.55% and maintained stability within a wide range of pH values. Radical quenching and EPR studies confirmed the involvement of SO 4 ·- , ·OH and 1 O 2 in the removal of PHE during the degradation process. The possible degradation pathways were proposed based on the identification of intermediates. The catalyst demonstrated excellent reusability and was effective in real water samples and for other organic pollutants, highlighting its potential for practical environmental applications.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Huanggen Yang,Pei Zhang,Qi Zheng,Guochao Nie,Asif Hayat,Majed A. Bajaber,Saleem Raza,Duofu Li,Yan Sui
A unique combination of cotton fabric (CF) with a mixture of EDTA and APTES Fe 3 O 4 magnetic particles was developed and utilized for the first time as an adsorbent for removing pollutants from wastewater. Initially, Fe 3 O 4 was synthesized using the co-precipitation method. Further, the surface of Fe 3 O 4 was modified by introducing amino functional groups through a reaction with APTES, resulting in Fe 3 O 4 -NH 2 . Following this, the surface of carbon fiber (CF) was altered using ethylenediaminetetraacetic acid (EDTA) to create CF@EDTA. Through the use of EDC-HCl and NHS, Fe 3 O 4 -NH 2 was attached to the surface of CF@EDTA, resulting in the final product CF@EDTA/Fe 3 O 4 . Subsequently, the prepared CF@EDTA/Fe 3 O 4 was utilized to adsorb metal pollutants from wastewater, with a thorough analysis conducted using various characterization techniques including FTIR, SEM, EDX , XRD , VSM , and XPS to study the materials. The study specifically aimed to assess the adsorption performance of our cotton-based material towards As(III) and Cr 3+ metal ions. The pH study was also performed. Results indicated that the material exhibited an adsorption capacity of approximately 714 mg/g for As(III) ions and 708 mg/g for Cr 3+ ions. The Langmuir and Freundlich models, as well as pseudo-first and second-order models were also analyzed. The Langmuir and pseudo-second-order models were found to best fit the data. In terms of regeneration and reusability, the materials showed straightforward regeneration and recyclability for up to 15 cycles. The remarkable adsorption capacity, combined with the unique blend of cotton and Fe 3 O 4 magnet, along with its recyclability, positions our material CF@EDTA/Fe 3 O 4 as a promising contender for wastewater treatment and other significant areas in water research.
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BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
·
2025
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IF 3.8
Kiguchi Manabu,Wang Jingshen,Yuxin Li,Zhang Dan,Liang Zhongoing,Ma Mei,Fujishima Akira,Hanada Nobuhiro
Nano-sized magnetic photocatalysts (nano TiO2-SiO2/Fe3O4) with a particle size of approximately 20 nm were developed for efficient water treatment. Their photocatalytic performance was comparable to the nano particle photocatalysts, P25. Furthermore, the photocatalysts could be conveniently separated from treated water using a magnet. We then applied the photocatalysts to photokilling of Lactobacillus casei and degradation of persistent herbicides (simetryn, prometryn, metolachlor, and sulfometuron methyl). Lactobacillus casei, a Gram-positive bacterium lacking an outer membrane, was introduced and validated as a reliable model bacterium for photocatalytic antibacterial assessments. Complete photokilling of Lactobacillus casei occurred within 50 minutes of UV irradiation, demonstrating simpler kinetic behavior compared to traditionally used Gram-negative model organisms. The photocatalysts also exhibited effective degradation toward four persistent herbicides. Their concentrations decreased from 10 ppm to below 1 ppm within 120 minutes.
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