通过对Fe3O4纳米粒子接枝碳纳米管的单分散水溶液真空吸滤制备出一种新型的杂化碳纳米纸,它与树脂浸润良好,可以与复合材料一体成型。分别借助FE-SEM、EDS、BJH法和振动样品磁强计表征杂化碳纳米纸及其复合材料的微观形貌、元素组成、...通过对Fe3O4纳米粒子接枝碳纳米管的单分散水溶液真空吸滤制备出一种新型的杂化碳纳米纸,它与树脂浸润良好,可以与复合材料一体成型。分别借助FE-SEM、EDS、BJH法和振动样品磁强计表征杂化碳纳米纸及其复合材料的微观形貌、元素组成、平均孔径分布和磁性能。在8.2~18 GHz频段内利用波导法测量碳纳米管共混复合材料和外贴杂化碳纳米纸/碳纳米管共混复合材料的电磁参数和吸波反射率。研究结果表明：外贴一层杂化碳纳米纸（厚0.1 mm）后,碳纳米管共混复合材料的磁损耗明显增加,在8.2~18 GHz微波频段内吸波反射率基本上全部小于–10 d B（频宽大于9.7 GHz）,在15.42 GHz位置,反射损耗峰达–43.18 d B,远优于碳纳米管共混复合材料。展开更多
Fe3O4/carbon nanotubes（Fe3O4/CNTs） nanocomposites were prepared by polylol hightemperature decomposition of the precursor ferric chloride and CNTs in liquid triethylene glycol.After surface modification with hexaned...Fe3O4/carbon nanotubes（Fe3O4/CNTs） nanocomposites were prepared by polylol hightemperature decomposition of the precursor ferric chloride and CNTs in liquid triethylene glycol.After surface modification with hexanediamine,folate was covalently linked to the amine group of magnetic Fe3O4/CNTs nanocomposites.The products were characterized by Fourier-transform infrared spectroscopy,transmission electron microscopy,and vibrating sample magnetometry.Then Fe3O4/CNTs were used as a dual-drug carrier to co-delivery of the hydrophilic drug epirubicin hydrochloride and hydrophobic drug paclitaxel.The results indicated that the Fe3O4/CNTs had a favorable release property for epirubicin and paclitaxel,and thus had potential application in tumor-targeted combination chemotherapy.展开更多
针对水系镁离子电池正极材料循环不稳定及电化学性能差的问题,采用Mn_(3)O_(4)作为水系镁离子电池正极材料,通过简单的溶液共沉淀法将Mn_(3)O_(4)与碳纳米管(CNTs)原位复合形成Mn_(3)O_(4)/CNTs。经X射线粉末衍射仪(X-ray diffractomete...针对水系镁离子电池正极材料循环不稳定及电化学性能差的问题,采用Mn_(3)O_(4)作为水系镁离子电池正极材料,通过简单的溶液共沉淀法将Mn_(3)O_(4)与碳纳米管(CNTs)原位复合形成Mn_(3)O_(4)/CNTs。经X射线粉末衍射仪(X-ray diffractometer,XRD)、扫描电子显微镜(scanning electron microscopy,SEM)、通射电子显微镜(transmission electron microscopy,TEM)和循环伏安(cyclic voltammetry,CV)及充放电测试等表征,结果表明CNTs表面均匀附着尖晶石型Mn_(3)O_(4)纳米颗粒,提高了Mn_(3)O_(4)电极的导电性和电化学性能。Mn_(3)O_(4)/CNTs正极材料在100 mA/g下表现出305 mAh/g的比容量及长循环寿命,远高于Mn_(3)O_(4)的电池性能。Mn_(3)O_(4)/CNTs材料作为水系镁离子电池正极材料具有潜在的应用价值。展开更多
文摘通过对Fe3O4纳米粒子接枝碳纳米管的单分散水溶液真空吸滤制备出一种新型的杂化碳纳米纸,它与树脂浸润良好,可以与复合材料一体成型。分别借助FE-SEM、EDS、BJH法和振动样品磁强计表征杂化碳纳米纸及其复合材料的微观形貌、元素组成、平均孔径分布和磁性能。在8.2~18 GHz频段内利用波导法测量碳纳米管共混复合材料和外贴杂化碳纳米纸/碳纳米管共混复合材料的电磁参数和吸波反射率。研究结果表明：外贴一层杂化碳纳米纸（厚0.1 mm）后,碳纳米管共混复合材料的磁损耗明显增加,在8.2~18 GHz微波频段内吸波反射率基本上全部小于–10 d B（频宽大于9.7 GHz）,在15.42 GHz位置,反射损耗峰达–43.18 d B,远优于碳纳米管共混复合材料。
基金Funded by Natural Science Fund of Jiangsu Overseas Research&Training Program for University Prominent Young&Middleaged Teachers and Presidents,the Natural Science Fund of Jiangsu Province(No.BK20130094)the Enterprise-universities Cooperative Innovation Fund of Jiangsu Province(No.BY2014016)
文摘Fe3O4/carbon nanotubes（Fe3O4/CNTs） nanocomposites were prepared by polylol hightemperature decomposition of the precursor ferric chloride and CNTs in liquid triethylene glycol.After surface modification with hexanediamine,folate was covalently linked to the amine group of magnetic Fe3O4/CNTs nanocomposites.The products were characterized by Fourier-transform infrared spectroscopy,transmission electron microscopy,and vibrating sample magnetometry.Then Fe3O4/CNTs were used as a dual-drug carrier to co-delivery of the hydrophilic drug epirubicin hydrochloride and hydrophobic drug paclitaxel.The results indicated that the Fe3O4/CNTs had a favorable release property for epirubicin and paclitaxel,and thus had potential application in tumor-targeted combination chemotherapy.
文摘针对水系镁离子电池正极材料循环不稳定及电化学性能差的问题,采用Mn_(3)O_(4)作为水系镁离子电池正极材料,通过简单的溶液共沉淀法将Mn_(3)O_(4)与碳纳米管(CNTs)原位复合形成Mn_(3)O_(4)/CNTs。经X射线粉末衍射仪(X-ray diffractometer,XRD)、扫描电子显微镜(scanning electron microscopy,SEM)、通射电子显微镜(transmission electron microscopy,TEM)和循环伏安(cyclic voltammetry,CV)及充放电测试等表征,结果表明CNTs表面均匀附着尖晶石型Mn_(3)O_(4)纳米颗粒,提高了Mn_(3)O_(4)电极的导电性和电化学性能。Mn_(3)O_(4)/CNTs正极材料在100 mA/g下表现出305 mAh/g的比容量及长循环寿命,远高于Mn_(3)O_(4)的电池性能。Mn_(3)O_(4)/CNTs材料作为水系镁离子电池正极材料具有潜在的应用价值。
