Progress in Natural Science-Materials International
·
2020
·
IF 4
Zemin Zheng,Yiming Cao,Zhe Li,Huiyong Li,Dafeng Hu,Hao Jiang,Xuemin Geng,Jiangwei Lu,Xudong Zhang,Peng Yang,Yanfen Wan
Fe 3 O 4 nanoparticles (NPs) with a face-centered cubic (fcc) structure and two different morphologies (nanospheres and nanoprisms) were synthesized by a facile one-step method. The synthesized Fe 3 O 4 nanospheres and nanoprisms were monocrystalline and separable in a magnetic field. In different volume ratios of oleylamine (OAm) to dibenzyl ether, the sizes of the prepared Fe 3 O 4 NPs ranged from 5 to 21 nm. The OAm amount in the synthesis can significantly control the morphology of Fe 3 O 4 NPs. As the OAm content increased from 10 ml to 30 ml, the faceted nanoprisms shrank while the nanospheres enlarged. At an OAm content of 25 ml, the nanoprisms diminished while more hexagonal and sphere-like particles appeared, implying a critical point of morphology transition from triangle to hexagon. The magnetic properties also depended on the NP morphology and size. The prepared Fe 3 O 4 NPs are promising candidates in medical applications such as magnetic resonance imaging, targeted drug delivery, blood purification, and tumor hyperthermia.
研究领域:
材料科学
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医学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2016
·
IF 2.74
Guo-Qiang Liu,Fei Wang,Sheng-Jun Luo,Dong-Yan Xu,Rong-Bo Guo
Nano metal fluids have been applied to promote the formation of natural gas hydrates . In this work, the sol of SDS@Fe 3 O 4 (named as SDS@Fe 3 O 4 ) were prepared and used as promoters in methane hydrate formation. Compared with SDS , SDS@Fe 3 O 4 produced much better promotion and the main superiority was that SDS@Fe 3 O 4 could significantly shorten the induction periods of hydrate formation. When SDS was used, the induction periods lasted about 40–60 min, while when SDS@Fe 3 O 4 was used at the same concentrations, hydrates nucleated within 10 min, especially, even no obvious induction periods were observed when SDS@Fe 3 O 4 was used in some experiments. Particle size showed significant influences on the promotion of SDS@Fe 3 O 4 to methane hydrate formation and smaller particles resulted in rapider hydrate formation. In addition, SDS@Fe 3 O 4 showed excellent repeatability during the hydrate formation-dissociation cycles.
研究领域:
化学工程
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 137
·期 15
·48546
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IF 2.188
Lei Yang,Qi Fu,Heqing Fu
Magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites were synthesized based on waterborne polyurethane (WPU) and amino-functionalized Fe 3 O 4 by in situ polymerization. The Fe 3 O 4 nanoparticle was found to be uniformly distributed in Fe 3 O 4 /WPU nanocomposites with linear or crosslinked structure. In addition, the formation mechanism and magnetic conduction mechanism of stable inorganic–organic nanocomposites were discussed. The experimental results showed that the thermal stability, magnetic, and mechanical properties of magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites were improved by amino functionalized Fe 3 O 4 . Furthermore, the defoaming property of the emulsion and the hydrophobic property of magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites were improved by the 1-hexadecanol-terminated prepolymer. What more, polycaprolactone (PCL)-based Fe 3 O 4 /WPU nanocomposites have excellent mechanical properties (The tensile strength is over 30 MPa, the elongation rate is above 300%.) and magnetic properties. Magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites will be used in the field of hydrophobic and microwave absorbent materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48546.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 68
·63704-63710
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IF 3.289
Aihua Li,Hongjing Ma,Jingquan Liu
A novel GO coated porous magnetic NPs (Fe3O4@mSiO2@GO) for bioimaging was synthesized. First, Fe3O4 magnetic NPs were prepared through a solvothermal reaction. Second, through a surfactant-templating approach with cetyltrimethylammonium bromide (CTAB) as a template, a mesostructured CTAB/SiO2 composite was deposited on Fe3O4 NPs surfaces. Third, CTAB templates were removed to form a mesoporous SiO2 shell, resulting in mesoporous magnetic (Fe3O4@mSiO2) NPs. Forth, the magnetic NPs surfaces were functionalized with amino groups by (3-aminopropyl)triethoxysilane (APTES). Finally, the dye rhodamine B (RB) was loaded inside porous magnetic NPs, and the magnetic NPs surfaces were then wrapped with graphene oxide (GO) nanosheets. SEM analysis revealed that GO sheets have been successfully coated on magnetic NPs surfaces. The hysteresis loops analysis indicated that these magnetic NPs still retained strongly magnetic property. Furthermore, Fe3O4@mSiO2@GO NPs could efficiently protect the loaded dye from releasing. In addition, MTT assay revealed that the RB loaded Fe3O4@mSiO2@GO NPs exhibited insignificant cytotoxicity at moderate concentrations and the RB loaded Fe3O4@mSiO2@GO NPs could undergo target-directed move under the action of a magnetic field. The noncytotoxic magnetic hybrids presented significant potential for applications in cell imaging.
研究领域:
材料科学
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生物医学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Bio Materials
·
2022
·
IF 0
Xiangrong Tian,Li Ruan,Shengwang Zhou,Lin Wu,Jin Cao,Xueyong Qi,Xin Zhang,Song Shen
Iron oxide nanoparticles can induce cell death due to the ferroptosis mechanism, showing a great potential for cancer therapy. Here, we synthesized different-sized iron oxide nanoparticles (2–100 nm) to investigate their antitumor effect and toxicity mechanism. It was found that ultrasmall nanoparticles (< ∼5 nm) could accumulate in nucleus and were more efficient in triggering the generation of •OH than larger nanoparticles due to the quicker release of Fe2+, thus exhibiting more remarkable cytotoxicity. Nevertheless, 10 nm iron oxide nanoparticles group displayed the best antitumor effect in vivo. We studied the in vivo and intratumoral biodistribution of the nanoparticles and found that the therapeutic effects were related to both the tumoral accumulation and intratumoral distribution of nanoparticles. This work indicates the appropriate size of Fe3O4 NPs for cancer treatment and illustrates the possible factors that influence the therapeutic effect, suggesting the great potential of iron oxide in clinical application.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
✓ 已验证
产品关联
DOI
PubMed
Desalination and Water Treatment
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2016
·
IF 1.272
Yan Xu,Jingjie Jin,Xianliang Li,Chaosheng Song,Hao Meng,Xia Zhang
A magnetic hybrid material (Fe3O4-embedded-MOF) consisting of a stable metal–organic framework HKUST-1 embedded with poly(N-vinyl-2-pyrrolidone) coated Fe3O4 microspheres was simply prepared under refluxing conditions for 4 h. The as-synthesized material was characterized using powder X-ray diffraction, scanning electron microscopy (SEM), vibrating sample magnetometry (VSM), energy dispersive spectroscopy (EDS) and N2 adsorption–desorption at 77 K. The hybrid material was studied for the adsorption of methylene blue from aqueous solution. The effects of dye concentration, adsorbent dose, and initial pH on the adsorption of methylene blue were measured, and from these experimental data, adsorption isotherms, kinetics, and thermodynamics were obtained. The results showed that a pseudo-second-order kinetic model and Langmuir isotherm (with R2 = 0.937) matched well for the adsorption of methylene blue onto Fe3O4-embedded-MOF. Thermodynamic parameters including free energy, enthalpy, and entropy of methylene blue adsorption were calculated, and the results showed that the adsorption of methylene blue were favorable on Fe3O4-embedded-MOF. The magnetic hybrid Fe3O4-embedded-MOF material features both magnetic separation characteristics as well as excellent adsorption performance for methylene blue in aqueous solution. The results of the present study demonstrate that Fe3O4-embedded-MOF is a promising adsorbent for the removal of dye from wastewater.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2019
·Vol. 19
·期 4
·2211-2218
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IF 1.093
Tao Cai-Hong,Chen Tiandi,Ma Fusheng,Liu Hui,Li Xiuqi,Lin Shenghong
The submicron-sized Fe3O4 particles were synthesized by solvothermal method. Then polydopamine (PDA) was used to modify the surface of Fe3O4 particles. And then the core—shell Fe3O4@PDA@BSA (single layer and multilayer)
microspheres were prepared by the layer by layer self-assembly method (SAM). In addition, Ag nanospheres were grafted onto the surface of Fe3O4@PDA particles to obtain Fe3O4@PDA-Ag core—shell nanoparticles using silver mirror reaction. The
morphology and component of the obtained core—shell particles were characterized by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The biocompatibility of the microspheres was researched in vitro by MTT method and its magnetic properties were
also evaluated. The results showed that the microsphere has excellent magnetic properties and good biological safety. Then the catalytic performance of Fe3O4@PDA-Ag microspheres for methylene blue (MB) was studied. And the antimicrobial properties of Fe3O4@PDA-Ag
microspheres for Escherichia coli and Bacillus subtilis were also be discussed. The results indicated good catalytic properties and antibacterial properties.
研究领域:
材料科学
·
生物学
·
医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Wenlai Xia,Xuelin Wang,Dongning Liu,Chenjian Li,Jian Xie,Chuanxi Xiong
Owing to the large surface energy and easy agglomeration, ferroferric oxide (Fe 3 O 4 ) nanoparticle usually is difficult to be widely application in microwave absorbing coatings. In this paper, a new synthesis process was used to prepare solvent-free fluid Fe 3 O 4 (S-Fe 3 O 4 ) by surface modification of solid Fe 3 O 4 with a long chain of organic bimolecular layer, which showed excellent dispersion in resin materials. Moreover, S-Fe 3 O 4 was compounded with CNT@Fe 3 O 4 to prepare S-Fe 3 O 4 /CNT@Fe 3 O 4 /EP composites, which realized the multiple loss mechanism of electromagnetic wave (EMW) absorption. The results showed that the minimum reflection loss of composite was −52.57 dB with a matching thickness of 3.3 mm; the maximum effective absorption bandwidth at 1.4 mm thickness was 5.2 GHz (12.08–17.28 GHz). This surface molecular engineering composite based on inorganic particles enhanced the attenuation ability of EMW by improving the dispersion of inorganic particles and providing multiple loss mechanisms, which was a novel medium regulation strategy to provide a new insight for nanoparticles in the field of EMW absorbing coatings.
研究领域:
材料科学
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电磁学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2019
·Vol. 91
·期 12
·2058-2064
·
IF 0.508
Zhan Yingqing,Zhao Rui,He Shuangjiang,Zhao Shumei,Xue Weidong
Development of novel corrosion inhibitors is important for improving the anticorrosion of carbon steel because the serious carbon steel corrosion causes enormous economic losses to humankind. In this work, we demonstrated the novel organic functionalized Fe 3 O 4 hybrid inhibitor for enhancing the anticorrosion performance of carbon steel. For this purpose, amino-Fe 3 O 4 nano-spheres (NH2–Fe 3 O 4 ) were prepared via solvothermal route, using FeCl 3 .6H 2 O as an iron source and 3-aminophenoxy-phthalonitrile as precursor. Then, the N,N-diethyl-3-amine methyl propionate (DM) was reacted with amino-Fe 3 O 4 nano-spheres to produce the organic functionalized nano-Fe 3 O 4 hybrid. The chemical composition and micro-structure of as-obtained organic functionalized Fe 3 O 4 hybrid were characterized and confirmed by Fourier transform infrared, X-ray diffraction, and scanning electron microscopy. Furthermore, the anticorrosion performance of carbon steel by addition of organic functionalized nano-Fe 3 O 4 inhibitor was investigated by AC impedance measurements and polarization curves. The research results showed that the organic functionalized nano-Fe 3 O 4 exhibited enhanced inhibition effect for carbon steel, which can be used as a new type of carbon steel corrosion inhibitor.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Xi-Lin Wu,Yanpeng Shi,Shuxian Zhong,Hongjun Lin,Jian-Rong Chen
Herein, we have developed a facile and low-cost method for the synthesis of novel graphene based nanosorbents. Firstly, well-defined Fe 3 O 4 nanoparticles were decorated onto graphene sheets, and then a layer of mesoporous SiO 2 were deposited on the surface of the Fe 3 O 4 -graphene composites. The obtained Fe 3 O 4 -graphene@mesoporous SiO 2 nanocomposites (denoted as MG@m-SiO 2 ) were characterized by scanning electron microscopic (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transformed infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The adsorptive property was investigated by using MG@m-SiO 2 as sorbents and Methylene Blue (MB), a common dye, as model of the organic pollutants. Adsorption kinetics, isotherms, thermodynamics as well as effects of pH and adsorbent dose on the adsorption were studied. The adsorption isotherms and kinetics are better described by Langmuir isotherm model and pseudo-second-order kinetic model, respectively. Thermodynamic studies suggest that the adsorption of MB onto the MG@m-SiO 2 is endothermic and spontaneous process. The results imply that the MG@m-SiO 2 can be served as a cost-effective adsorbent for the removal of organic pollutants from aqueous solutions.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ISIJ INTERNATIONAL
·
2017
·Vol. 57
·期 1
·62-67
·
IF 1.11
Zijian Su,Yuanbo Zhang,Yingming Chen,Guanghui Li,Tao Jiang
A considerable amount of works were focused on the formation mechanism of calcium ferrite phases during the iron ore sintering process, especially under various O2 content atmospheres at temperatures higher than 1100°C. But little attention has been paid on reactions between CaO and iron oxides in CO–CO2 atmospheres at lower temperatures. In this study, the solid state reaction mechanisms between CaO and Fe3O4 under CO–CO2 atmospheres at 800°C–1100°C were revealed by using XRD, VSM, etc. The results indicated that Ca2Fe2O5 was easily formed under 5–50 vol% CO/(CO+CO2) atmosphere above 850°C via the reaction of 6CaO + 2Fe3O4 +CO2 = 3Ca2Fe2O5 + CO and the reaction would be promoted with increasing the roasting temperature. In the CO–CO2 atmosphere, Fe3O4 is easily oxidized to Fe2O3 in the presence of CaO because CO2 components act as oxidative medium for the oxidation of Fe2+ to Fe3+.
研究领域:
冶金学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Che Han,Yujie Wang,Jintao Liu,Qiangyi Deng,Hongmei Zhang,Shuang Xu,Conglu Zhang
There is growing attention in the removal of microplastics (MPs) from aquatic environment because of their toxicity and difficulty in degradation. Magnetic Fe 3 O 4 is a potential material for MP removal, however, for fabrication of high-efficiency Fe 3 O 4 -based adsorbents, the alkaline synthesis conditions and weak affinity toward MPs must to be addressed. In this study, we developed magnetic α-Fe 2 O 3 /Fe 3 O 4 hybrid adsorbents (MFes) with engineered affinity sites via a facile one-pot synthesis method. During the material formation process, melamine acted as both a nitrogen source for creating N-modified polar adsorption sites and an inducer for formation of α-Fe 2 O 3 /Fe 3 O 4 phase interfaces. The α-Fe 2 O 3 /Fe 3 O 4 phase interfaces provided additional active sites, as evidenced by the enhanced microplastic adsorption performance. The MFe-1.6–100 achieved 92.3 % polystyrene removal at low adsorbent dosage 0.2 g L −1 and showed rapid adsorption kinetics within 25 min, which is superior to most reported values. After five cycles, the removal efficiency could still retain 90 %. Additionally, MFe-1.6–100 exhibited remarkable ion-tolerance for Cl - and NO 3 - . These performances suggest its potential applicability for MPs capture in aquatic environments.
研究领域:
环境科学
·
材料科学
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）