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Traditional liquid-phase adsorbents have limitations in Cu (11) adsorption such as low adsorption difficult separation and recovery, while metal-organic frameworks (MOF) exhibit great potential in the field of heavy metal ion adsorption. Tn this study Fes ()i @MTL-1 0()(Fe) magnetic material was created by an economical and environmentally friendly low-energy room-temperature aqueous-phase method using Fes()i as a nucleus and then modified NH2-Fe3 ()4 ©MTL-1 0()(Fe) was prepared by post-synthesis modification method. The materials before and after modification were characterized using XRD? FT-TR SEM TEM VSM and EA. The adsorption performance of Cu(11) was studied by investigating the effects of pH time concentration and temperature. Due to the coordination reaction and electrostatic interaction between NH-Fes ()i @MTL-1 0()(Fe) and Cu(11) the adsorption capacity of Cu(11) (46.77 mg/g) was significantly higher than that before modification. The ad sorption process of Cu(11) conformed to the Pseudo 1st order and the Freundlich adsorption model in both modified and unmodified materials. Thermodynamic study showed that the adsorption of Cu (11) to the modified material was a spontaneous endothermic process while that was a spontaneous exothermic process before the modification. Tn addition after 5 sorption-desorption cycles the adsorption capacity of Cu(11) by NH-Fes()i @MTL-1 0()(Fe) was still slightly higher than that by Fes()i ©MTL-100(Fe). [ABSTRACT FROM AUTHOR]

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Ecology & Rural Environment is the property of Journal of Ecology & Rural Environment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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MoS2@Fe3O4 composite was fabricated via two-step hydrothermal method, utilizing cetyltrimethyl ammonium bromide(CTAB) as a soft template, thioacetamide as a sulfur source, and sodium molybdate as a molybdenum source. The morphology and structure of MoS2@Fe3O4 were analyzed by SEM and XRD. The efficiency and mechanism of catalytic degradation of iodoprolol(IPM) by MoS2@Fe3O4/H2O2 system was evaluated. The results showed that Fe3O4 was deposited on the surface of MoS2, and MoS2@Fe3O4 had a uniformly dispersed flower ball structure, which provided more catalytic active sites. Under the conditions of initial pH of 4, MoS2@Fe3O4 dosage of 0.15 g/L, H2O2 concentration of 0.5 mmol/L, and IPM concentration of 5 μmol/L, the degradation rate of IPM by MoS2@Fe3O4/H2O2 system reached 89.85% after 30 minutes of reaction. Compared with Fe3O4/H2O2 system, the degradation rate of IPM increased by about 12%. The applied magnetic field facilitated the reusability of MoS2@Fe3O4. The main active species for IPM degradation by the MoS2@Fe3O4/H2O2 system were ·OH and 1O2. The degradation rate of the MoS2@Fe3O4/H2O2 system on IPM remained stable over 80% after 6 cycles, suggesting that MoS2@Fe3O4 had good stability.

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Technology of Water Treatment is the property of Technology of Water Treatment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Graphene oxide (GO) was obtained by the improved Hummers method. The GO/Fe3O4 composite, in which GO was combined with magnetic Fe3O4 nanoparticles, was prepared by co-precipitation method. The crystalline structure, microscopic morphology, magnetic properties and drug loading of the composite were analyzed. The results showed that: The GO/Fe3O4 composite had high crystallinity; GO doping improved the uniformity of Fe3O4 particles, and the grain size of GO/Fe3O4 composite was 13-15 nm. The GO/Fe3O4 composite exhibited superparamagnetic properties with a slight decrease in saturation magnetization. The drug-release properties were studied by using GO/Fe3O4 composite to load doxorubicin (DOX). The average encapsulation efficiency of GO/Fe,O4/DOX inclusion complex was 62.24%, which was quite high. The drug release showed pH dependence. When the pH was 7.4, the cumulative release rate reached 73.3% in 75 h. The cellular uptake test showed that the GO/Fe3O4 carrier had certain targeting properties and could be used as a good new drug carrier. [ABSTRACT FROM AUTHOR]

Copyright of Hydrometallurgy of China is the property of Hydrometallurgy of China Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Surfactant Detergent & Cosmetics (2097-2806) is the property of China Surfactant Detergent & Cosmetics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Polymer Materials Science & Engineering is the property of Sichuan University, Polymer Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To enhance the degradation rate of methylene blue (MB) in water, ultrasonication and solvothermal methods were used to prepare Fe3O4/ZIF-9 composite catalysts. The morphology of the catalyst revealed the attachment of cubic ZIF-9 particles to spherical-like Fe3O4 particles. The particle sizes of these ZIF-9s slightly varied, which might be due to the influence of the increased number of nucleation sites originating from the addition of Fe3O4 on the nucleation and growth of ZIF-9s as well as the effects of the variation in Fe3O4/Co salt ratio on the nucleation quantity and growth rate of ZIF-9s. Using this catalyst at a Fe3O4/Co salt molar ratio of 1∶1, 95.1% of the MB was degraded within 30 min. Its pseudo-first-order kinetic constant for a 10-min catalytic reaction reached 0.101 min−1, and it remained stable and had high catalytic performance within the pH range from 5 to 9. X-ray photoelectron spectroscopy results showed that the valence state changes of Fe and Co in Fe3O4/ZIF-9 after MB degradation, verifying the electron transfer between the Fe and Co sites. Meanwhile, the divalent unsaturated Fe and Co sites in the Fe3O4/ZIF-9 structure were likely to synergistically transfer electrons based on the fast degradation kinetics mentioned above. Consequently, compared with the pure ZIF-9, the addition of Fe ions can effectively reduce the reduction potential of Co ions and accelerate the valence state changes of Co ions and the corresponding redox cycle. Furthermore, electron paramagnetic resonance results demonstrated that Fe3O4/ZIF-9 can activate peroxymonosulfate to generate singlet oxygen (1O2), sulfate radicals(SO\begin{document}${}_4^- $\end{document}·), and hydroxyl radicals (·OH), with 1O2 being the primary active species, as further confirmed by the free radical quenching test. Hence, such a redox cycle of Fe and Co sites continuously generated 1O2, SO\begin{document}${}_4^- $\end{document}·, and ·OH, which degraded the MB molecules into carbon dioxide and water. Moreover, a saturation magnetization value of 7.6 A·m2·kg−1 was measured using the vibrating sample magnetometer method, indicating that the Fe3O4 imparts good ferromagnetic properties to the composite catalyst, facilitating its collection and recovery after the catalytic reaction. In addition, after four cycles of use, the catalyst maintained its structure and high degradation rate without significant changes, thereby demonstrating excellent reusability. In conclusion, this study systematically explored the influence of the Fe3O4/Co salt molar ratio on the structure and catalytic performance of the catalyst, qualitatively analyzed the active species during catalysis, and further elucidated the mechanism by which Fe3O4/ZIF-9 improves the catalytic efficiency. This study offers insight into techniques for the organic dye remediation.

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Copyright of Journal of Xinyang Normal University Natural Science Edition is the property of Journal of Xinyang Normal University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Dalian Polytechnic University is the property of Journal of Dalian Polytechnic University Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purposes Combining the high selectivity of natural enzymes with the high stability of nanoenzymes in a one-pot reaction has emerged as an ideal solution to improving the diversity/complexity of biocatalytic cascades and the stability of multi-enzyme systems. Methods In this paper, we designed and synthesized an ionic magnetic Fe3O4@EB-COFs material to prepare glucose oxidase (GOx)-magnetic covalent organic framework material(GOx/Fe3O4@EB-COFs) through electrostatic interaction induction. Findings Fe3O4@EB-COFs played the role of nanoparticle enzyme and carrier material, and the obtained composite could be used for glucose concentration for colorimetric determination. Under acidic conditions, GOx/Fe3O4@EB-COFs exhibited a good cascade of catalytic glucose oxidation and 2,2′-biazo-bis-3-ethylbenzothiazoline-6-sulfonic acid oxidation. The kinetic study showed that the reaction followed the Lineweaver-Burk equation, indicating that the cascade reaction of the constructed nanoenzyme with natural enzyme still exhibited biocatalytic characteristics. GOx/Fe3O4@EB-COFs exhibited good recoverability with the addition of magnetic Fe3O4. Conclusions Therefore, the construction of a multi-enzyme catalytic system of nanoenzymes and natural enzymes is important for the realization of biomimetic catalysis.

Prepared by the method of grafting polymerization on the surface of a new type of magnetic flocculant Fe3 O4-g-PAM, the flocculant to non-toxic environmental ferroferric oxide and industry commonly used polyacrylamide together, overcome the shortcomings of the two kinds of materials respectively ・ Results show that the preparation of magnetic flocculants its good flocculation performance・ By flocculating 1 g/L Kaolin suspension, the flocculation effect is the best when the dosage of PAC is L 0 mL/L, the flocculation time is 20 min, the dosage of Fe3O4-g・PAM is L 0 g/L, and the turbidity can be decreased from 1 245. 37 NTU to 0. 69 NTU. [ABSTRACT FROM AUTHOR]

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The hydrogenated TiO2 coated core-shell structure C/Fe3O4@rGO (H-TiO2/C/Fe3O4@rGO) composite material with oxygen vacancy defects was prepared by a simple method as high-performance anode material for lithium-ion batteries (LIBs). The volume expansion coefficient of TiO2 in the process of Li+ deintercalation is about 4%, which can alleviate the volume expansion of Fe3O4 during charging and discharging, and improve the stability of the anode material structure. At the same time, the lower conductivity of TiO2 (about 1×10-12 S·m-1) is improved by hydrogenation. After 200 cycles, the H-TiO2/C/Fe3O4@rGO specific capacity is 867 mAh·g-1 at a current density of 0.3 A·g-1, and the specific capacity is 505 mAh·g-1 after 700 cycles at a current density of 1 A·g-1, these results is far greater than the theoretical capacity of graphite (372 mAh·g-1). These findings indicate that the H-TiO2/C/Fe3O4@rGO composite materials may be used as a suitable anode material for LIBs.

Magnetic geopolymer (Fe3O4-CGGP) was prepared from coal gangue, and evaluated by Fenton-like degradation of phenol. It was found that Fe3O4 with a particle size of 10-20 nm was uniformly dispersed on the surface of coal gangue geopolymer (CGGP). The saturation magnetization of Fe3O4-CGGP reached 35.68 emu/g. These indicated that Fe3O4-CGGP had a good catalytic activity and magnetic responsiveness. The effects of pH value, catalyst dosage, H2O2 dosage, and initial phenol concentration were investigated on Fenton-like degradation of phenol. The optimum conditions were as follows: pH is 3.5, catalyst dosage 0.5 g/L, and H2O210 mmol/L. Under the parameters, phenol can be completely degraded in 60 min. The free radical quenching experiment revealed that ·OH dominates the catalytic process in the Fe3O4-CGGP/H2O2 system.

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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In order to improve the efficiency of photocatalytic materials and realize the greening of materials, in this study, the magnetic photocatalytic materials were prepared by doping Ni-NiO/Fe3O4-GR with lignocellulose as the initial material and TiO2 as the catalytic bulk material. The results showed that the photocatalytic efficiency of methylene blue was significantly different with different proportions of Fe3O4-GR (G1F1). When the addition of photocatalytic material complex G1F1 was at 8.3% of the mass of lignocellulose, the photocatalytic efficiency could reach 91.92%, indicating excellent photocatalytic performance. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Molecular Science is the property of Journal of Molecular Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Molecular Science is the property of Journal of Molecular Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The hydrophobic magnetic materials of HMC-1 and HMC-2 were obtained by blending synthesized Fe3O4 nanoparticles and commercial CaCO3 powder with stearic acid solution, which is used as hydrophobic modifier. HMC-2 was loaded on the PU sponge for the further improvement of the applicability. The structural properties of the two materials were detected by X-ray powder diffractometer and infrared spectrometer. Thermal stability of HMC-2 was analysed by differential scanning calorimeter. The hydrophobic properties of the samples were determined by contact angle meter. The results show that HMC-2 has more stable hydrophobic properties than HMC-1. HMC-2 exhibits more stable hydrophobic performance. The contact angle remains nearly unchanged (about 150°) after oil removal. HMC-2 shows no release of Fe(Ⅲ) ions, which has taken place during the oil removal experiment using HMC-1. PU sponge loaded with HMC-2 can remove 98% oil in 3 s. The oil removal rate remains 95%, after 20 times of repeated oil absorption. The mass ratio of oil adsorption/adsorbent is larger than 100.

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Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The magnetic functionalized graphene based 17β-estradiol molecularly imprinted composite membrane (GO@Fe3O4-MIP) was successfully prepared by reversible addition fragmentation chain transfer (RAFT) polymerization technique using GO@Fe3O4 as carrier and 17β-estradiol as template molecule. High resolution transmission electron microscopy (HRTEM) and atomic force microscope(AFM), vibrating sample magnetometer(VSM) were employed to characterize the as-prepared samples. The results show that the calculated magnetic property of GO@Fe3O4-MIP is 12.89 A·m2·kg-1 and the thickness is about 6.45 nm. The adsorption equilibrium time of GO@Fe3O4-MIP on 17β-estradiol is 30 min, the maximum adsorption capacity is 28.62 mg/g. These findings confirm that GO@Fe3O4-MIP has high adsorption efficiency and good adsorption selectivity for 17β-estradiol.

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Tn order to realize the coordination between material and structure and enhance the electromagnetic shielding performance of fabric, taking silver plated fabric as base cloth, introducing magnetic loss material Fes ()i, and using porous structure, silver plated conductive cloth based Fes O;]/waterborne polyurethane (WI〉U) foaming coating material is prepared by foaming coating method. The effects of Fes()i addition on the apparent structure of the coating and the electromagnetic shielding properties of the composites under the synergistic action of electromagnetic materials and cell structure are investigated. The experimental results show that when the amount of Fes ()i is less than 20%, Fes has relatively good dispersion in the waterborne polyurethane matrix, the pore size distribution is uniform, and the electromagnetic shielding performance of the composite is up to 85 dB in the range of 8.2〜12.4 GHz, which is 18% higher than that of the original base cloth. [ABSTRACT FROM AUTHOR]

Recently Fe3O4 nanoparticles have been widely used in drug delivery systems due to their excellent magnetic properties and good biocompatibility. However, the surface of Fe3O4 nanoparticles is prone to agglomeration if it is not modified, which will affect his application performance. In this paper, Fe3O4 is hydrolyzed by ethyl orthosilicate (TEOS) and coated with SiO2 layer. Then the carbon layer is coated by hydrothermal reaction. Finally, SiO2 is etched by NaOH to form a kind of Fe3O4@C coreshell nanomaterials. The structure and morphology of Fe3O4@C nanoparticles were characterized by FT-IR, TEM and UV-Vis absorption spectroscopy, and the interface modification and related properties of nanoparticles are studied. The results show that the magnetic properties of Fe3O4 are not affected by the modified Fe3O4@C, and the specific surface area and the loading rate of Fe3O4are improved. The loading rate of Fe3O4reaches 98.9%. The drug release behavior of the compound interface modified Fe3O4@C under different pH conditions is further studied to explore the possibility that pH value could be used as a 'switch' for controlled drug release. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Tiangong University is the property of Journal of Tianjin Polytechnic University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The one-step method uses trimethoxyphenylsilane as the silicon source and Fe3O4 as the core to prepare a magnetic silicon sphere with good morphology and numerous cavities inside. The effects of HNO3 dosage, PTMS dosage, temperature, hydrolysis time, stirring speed and Fe3O4 dosage on the morphology and properties of magnetic silica spheres were investigated. The results show that the best size and shape of the standard sample S3 was obtained by reacting 37 μL HNO3, 0.95 mL PTMS, 150 mg Fe3O4 in water bath at 60℃ and mechanical stirring at 260 r/ min for 3 min. The particle size is 296 nm, the magnetic saturation intensity is 10.8 emu/ g, the specific surface area is 218 m²/ g and the pore volume is 0.132 cm³/g. [ABSTRACT FROM AUTHOR]

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Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Fe3 O4 as a typical nano-magnetic material was widely used in wastewater treatment. In this work, in order to further improve its adsorption performance, S-ZnFe2O4 was prepared by double modification Zn and sulfur on Fe3O4, the structures and morphologies of Fe3O4 and S-ZnFe2O4 were compared and characterized by SEM, XRD, EDS, FT-R, Raman and other characterization methods. Adsorption experiments explored the influence of pH on the adsorption of uranyl ions. Its adsorption kinetics and thermodynamics were explored based on variable contact time and initial concentration. The results showed that after the double modification of Zn and S, the adsorption capacity for UO22+ increased significantly, from 27.12 mg/g to 51.68 mg/g. the optimal pH for the adsorption of UO22+ by nano-Fe3 O4 and S-ZnFe2 O4 was 6.0; the adsorption process fitted to the pseudo second-order kinetic model; the adsorption process of nano-Fe3 O4 fitted to both Langmuir isotherm adsorption model and Freundlich isotherm adsorption model, the adsorption process of nano-S-ZnFe2 O4 fitted to Langmuir isotherm adsorption model; This research is of great guiding significance to the development of new adsorbents that efficiently adsorb uranium-containing wastewater. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Science & Engineering (1673-2812) is the property of Journal of Materials Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Bioprocess Engineering is the property of Chinese Journal of Bioprocess Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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In order to explore the synthesis process of magnetic Fe3O4, nanoparticles, the solvothermal method is used to prepare Fe3O4 nanoparticles and their reaction conditions are adjusted. The surface morphology, composition structure and crystal structure are characterized by scanning electron microscope, infra red spectrometer and X-ray diffractometer, respectively. Its magnetic property is tested by vibrating sample magnetometer. The regulation mechanism of reaction time, reaction temperature and polyethylene glycol (PEG ) dosage is investigated. The results show that the optimal synthesis conditions are reaction time of 12 h, reaction temperature of 200 °C and PEG content of 1 mmol. The prepared product has uniform size, stable morpho logy an d good dispersibility The particles are about 400 nm in diameter and has good magnetic property. [ABSTRACT FROM AUTHOR]

In order to improve the microwave absorbing properties of traditional carbon materials and obtain micro wave absorbing materials with multiple absorbing mechanisms. the Fe3O4, CNTs@Cf , composites were fabricated by chemical vapor deposition (CVD) method and solvothermal reaction. The microwave absorbing properties of the composites were studied, and the fort nation mechanism and absorption mechanism of the composite were analysed. The reflection loss can reach-43.02 dB in C band. With the further increase of Fe3O4, nono-particles content. the microwave absorption performance of the composite decreases. [ABSTRACT FROM AUTHOR]