MATERIALS & DESIGN
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2019
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IF 5.77
Shuying Shi,Chonghe Xu,Xinqiang Wang,Yongshuai Xie,Yuping Wang,Qing Dong,Luyi Zhu,Guanghui Zhang,Dong Xu
Magnetic fibers adsorbent has attracted more and more attention because of the large surface area and overcoming the disadvantages of easy agglomeration and difficult separation. Adding Fe 3 O 4 nanoparticles into spinning solution followed by electrospinning is a common method to prepare magnetic fibers. In this paper, a new sol-gel method was developed to prepare Fe 3 O 4 fibers, which overcame the disadvantage of low saturation magnetization due to the limited amount of magnetic nanoparticles in spinning solution, and uneven distribution of magnetic nanoparticles in the fibers. Through studying the effect of the proportion of ethanol in the solvent and the amount of solvent on the surface tension, the conductivity and viscosity of the spinning solution, and the spinning solution with the best spinnability were explored. The prepared Fe 3 O 4 fibers had high saturation magnetization and maintained excellent flexibility. They had the advantages of self-supporting without agglomeration, and were easier to magnetically separate than Fe 3 O 4 powder prepared by the same method. In addition, the adsorption and regeneration performances for Pb(II) of Fe 3 O 4 fibers were better than those of Fe 3 O 4 powder. Fe 3 O 4 fibers were suitable for heavy metal adsorbent or adsorbent core, which became another effective strategy to expand the application prospects of magnetic adsorbents.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
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2017
·Vol. 106
·期 5
·1827-1841
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IF 3.189
Yikun Yang,Chunyi Tong,Juchang Zhong,Ruiying Huang,Weihong Tan,Zhikai Tan
Magnetic hyperthermia has been rapidly developed as a potential cancer treatment in recent years. Artificially induced hyperthermia close to a tumor can raise the temperature to 45°C causing tumor cell death. Herein, we introduce a novel method for rapid preparation of anti-cancer magnetocaloric PCL/Fe 3 O 4 mats capable of high-performance hyperthermia using E-jet 3D printing technology. Our 3D printed mats not only maintained the heating efficiency of traditional techniques for magnetic hyperthermia but also prolonged the effective therapy in vivo . When Fe 3 O 4 nanoparticles (NPs) were used in mats at a concentration of 6 mmol/L, 0.07 g PCL/Fe 3 O 4 mats were able to increase the temperature peripherally to 45°C under an alternating magnetic field (AMF) within 45 min. Moreover, the reproducibility experiment indicated that the maximum temperature was achieved following repeated heating and cooling cycles. Cell toxicity tests showed a high cell death rate during one treatment cycle. In vivo experiments indicated clear signs of tumor growth inhibitory and prolonged survival time of tumor-bearing mice after 4 weeks of treatment. The present magnetic mats may be a potential candidate for a novel heat-generating substrate for localized hyperthermia cancer therapy. Furthermore, the main advantage of such implantable magnetic mats is the local and precise delivery of Fe 3 O 4 NPs, ideal for the hyperthermia treatment of easily accessible tumors. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1827–1841, 2018.
研究领域:
生物医学工程
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材料科学
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肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
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2022
·
IF 6.137
Jinhao Gao,Wenqiang Chen,Huaqiang Shi,Zhijian Li,Liming Jing,Chen Hou,Jianzhi Wang,Yang Wang
Co 3 O 4 @Fe 3 O 4 /cellulose membrane was synthesized by coating rod-like MOF-derived Fe 3 O 4 with Co 3 O 4 nanoparticles and blending with cellulose solution, further applied in the visible light-driven photo-Fenton system for perfluorooctanoic acid (PFOA) degradation. In the H 2 O 2 /membrane/visible light system, the Electron paramagnetic resonance (EPR) analysis and scavenger experiment results suggested that PFOA degradation was a co-dependent mechanism via photogenerated electrons, photogenerated holes ( h + ) and various radical species, rather than a single active constituent. Co 3 O 4 @Fe 3 O 4 /cellulose membrane showed outstanding degradation performance, stability and recyclability under optimal conditions. Compared with pure Fe 3 O 4 or Co 3 O 4 nanoparticles , the Co 3 O 4 @Fe 3 O 4 /cellulose membrane can degrade around 94.5% PFOA within 180 min in reaction system, and the leached Fe and Co was only 0.05 and 0.49 ppm, respectively. Moreover, Co 3 O 4 @Fe 3 O 4 /cellulose was reused by rinsing with ultra-pure water and the degradation capacity was still 80.4% after five cycles. The degradation pathway of PFOA also was proposed based on UHPLC-MS analysis.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiuyan Deng,Shuang Gao,Xiaoming Qi,Hongbo Dai,Shaoyun Fu,Qingqing Ni,Yaqin Fu
Most of the existing flexible microwave absorbing materials (MAMs) are in forms of nonwoven or woven composites. However, the nonwoven ones always show the poor mechanical properties and the woven ones normally involve with the complex fabrication processes and present heavy weight (>1.0 g/cm 3 ), large thickness (>4.0 mm), and impermeability, which greatly hinder their wearable applications. Herein, a scalable 3D textile with hierarchically functionalized pyramidal units using the polyamide@carbon/Fe 3 O 4 fibers (PCF) was successfully fabricated via a simple combined process of melt-spinning and three-dimensional (3D) weaving technologies. The core-sheath PCF can be continuously fabricated with a high production rate of 6000 m/min using pristine polyamide as core and the modified polyamide doped with carbon black and Fe 3 O 4 nanoparticles as sheath. As a result, the as-prepared PCF are easily woven into various 3D textiles with pyramid periodic and impedance matching-lossy-dielectric multilayer structures, simultaneously achieving the impedance gradient and destructive interference. More importantly, changing the size of pyramid structures can tailor the microwave absorption performance. Consequently, the high-density polyamide@carbon/Fe 3 O 4 textile has high-efficiency microwave absorption ability, showing lightweight (0.3 g/cm 3 ), small-thickness (3.2 mm), strong (-47.51 dB), and broadband (5.2 GHz). Besides, the 3D structures endowed the textile with excellent mechanical property, superior flexibility, outstanding breathability and good heat insulation property, which is better than similar MAMs. This work provides a promising strategy for facile and large-scalable production of microwave absorption textiles with high overall performance.
研究领域:
材料科学
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纺织工程
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电磁材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）