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综述了碳纳米管非共价功能化的一些新的研究进展情况,介绍了碳纳米管非共价功化的种类、方法和意义,并对功能化后的碳纳米管的性能表征方法及应用前景进行了介绍。针对碳纳米管非共价功能化后虽可同时保持原有的物化性质和引入的物化性质,但表征非常困难这一矛盾进行了评述,并对今后的发展进行了展望。 相似文献
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功能化离子液体及其在食品工业中的应用 总被引:4,自引:0,他引:4
介绍了功能化离子液体的制备,综述了功能化离子液体在食品工业领域的最新应用进展,重点讨论了功能化离子液体在食品工业的原料合成、分析提纯和生物技术方面的应用进展,分析了功能化离子液体在食品工业应用中存在的问题,提出了功能化离子液体在食品工业中的发展方向. 相似文献
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本文跟踪碳纳米管非共价键功能化修饰的研究进展,对功能化碳纳米管在传感器领域中的应用进行了综述。 相似文献
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分别以十二烷基苯磺酸钠、十二烷基磺酸钠、十二烷基硫酸钠、十二烷基聚氧乙烯(23)醚、十六烷基三甲基溴化铵等表面活性剂为分散剂,水为溶剂,超声波作用下对硝酸纯化的碳纳米管进行非共价功能化处理,制备了初始浓度为2 g/L的碳纳米管悬浊液,并对处理后的碳纳米管进行定性分析. 结果表明,功能化处理后,表面活性剂吸附到碳纳米管表面,促进碳纳米管的分散. 定量分析了碳纳米管悬浊液的浓度,并根据碳管浓度随时间的变化研究悬浊液的稳定性. 结果表明,表面活性剂功能化处理所制碳纳米管悬浊液存放240 h后趋于稳定,碳纳米管浓度不再下降,最终碳纳米管悬浊液浓度因所用表面活性剂不同而在1.68~1.84 g/L范围内略有差异. 相似文献
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离子液体固定CO2及其转化利用的研究进展 总被引:2,自引:0,他引:2
综述了新型绿色溶剂离子液体在CO2固定和转化利用领域的应用研究进展.根据离子液体的结构特征和CO2的固定机理,离子液体固定CO2可以分为常规离子液体固定、功能化离子液体固定和离子液体固定转化.常规离子液体固定CO2为物理作用过程,功能化离子液体固定CO2为化学作用过程,而离子液体固定转化CO2的过程在固定CO2的同时又实现了CO2从工业废气直接到有用化学品的转变.因此,设计合成高效的功能化离子液体来实现CO2的固定转化一体化将具有重要的意义. 相似文献
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室温离子液体具有独特的气体选择溶解性,在二氧化碳(CO2)的捕集和分离中有很好的应用前景。综述了近年来CO2在不同离子液体中的溶解度研究进展,比较了CO2在常规离子液体和功能型离子液体中的不同溶解机制,分析、归纳了向离子液体中引入不同官能团对CO2溶解性能的影响规律,指出了离子液体捕集CO2的未来研究方向。 相似文献
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Chang-Hai Liu Bao-Hua Mao Jing Gao Shuai Zhang Xu Gao Zhuang Liu Shuit-Tong Lee Xu-Hui Sun Sui-Dong Wang 《Carbon》2012,50(8):3008-3014
We report a generic strategy to make hybrids incorporating metal nanoparticles and carbon nanosupports with large surface area, which is a one-step, universal approach totally free of additives and by-products. Utilizing this approach, we show that small Au, Ag and Pd nanoparticles of uniform size can be self-assembled on diverse carbon nanostructures such as graphene oxide, reduced graphene oxide, and multiwalled carbon nanotubes by simply sputtering metal onto room-temperature ionic liquids. The size of metal nanoparticles can be controlled by the composition of room-temperature ionic liquids, and the surface density of metal nanoparticles can be controlled by the sputtering conditions. The self-assembly is demonstrated to be driven by the interlinking interactions among the metal nanoparticles, ionic liquid cations and carbon nanostructures. 相似文献
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Philip G. Whitten 《Carbon》2005,43(9):1891-1896
Porous mats of carbon nanotubes, referred to as bucky paper, are becoming a viable engineering material, especially as electrodes in numerous types of electrochemical cells. The tensile strength of bucky paper was measured in the dry atmospheric condition, and the wet conditions of both water and 1-butyl-3-methyl-imidazolium tetrafluoroborate, an ionic liquid. The two different liquids have a significant impact on the mechanical properties of bucky paper, even when they are not known for readily wetting the nanotubes. It is shown that capillary forces contribute to the mechanical properties of bucky paper. It is also shown that there is a strong interaction between ionic liquid and carbon nanotubes. 相似文献
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《Carbon》2014
The use of graphene and multi-walled carbon nanotubes (MWCNTs) additives as lubricants has received considerable interest because of their excellent mechanical and frictional properties. Given their structural differences, both carbon nano-additives are expected to have different synergistic effects at various conditions (from boundary to mixed lubrication). For applications in space, the tribological properties of graphene and MWCNTs additives in diamond-like carbon/ionic liquids hybrid films in different lubricating states at high vacuum were compared. The wear surfaces, transfer films, wear debris, and microstructures of the hybrid films were analyzed via Raman spectroscopy, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. The results showed that MWCNTs and graphene present the different nano-scale tribological mechanisms and produce different lubricating effect on the hybrid films at different lubricating states. 相似文献
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Francisco J. Hernández‐Fernández Antonia P. de los Ríos Luis J. Lozano‐Blanco Carlos Godínez 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2010,85(11):1423-1435
Ionic liquids have shown potential as green reaction media compared with organic solvents, mainly due to their lack of vapour pressure. In non‐aqueous enzymology, ionic liquids are opening up new fields. The advantages of using ionic liquids over the use of organic solvents as reaction medium for biocatalysis include enhancement of enzyme activity, stability and selectivity. In this work, the enzymatic synthesis of esters in ionic liquids has been extensively reviewed. Numerous examples of the application of ionic liquids as reaction medium for the enzymatic production of esters have been included. The effect of the nature of the ionic liquid on activity, selectivity and stability of enzymes which catalyze esters synthesis has been carefully analysed. Innovative reaction methodologies for the biosynthesis of esters, including ionic liquid/supercritical carbon dioxide biphasic systems and the integrated reaction/separation processes using supported liquid membranes based on ionic liquids have been revised. Copyright © 2010 Society of Chemical Industry 相似文献
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离子液体作为一类新型材料,可用做溶剂或催化剂,表现出绿色清洁、反应速度快、收率高,以及应用范围广等诸多优势。概述了离子液体的分类,及其在绿色催化剂及清洁合成、绿色溶剂、电化学等方面的研究与应用进展,就笔者开展的季鏻盐离子液体研究工作进展进行了报道。对今后离子液体发展趋势进行展望。 相似文献
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固载化离子液体兼具载体材料高比表面积与离子液体的高催化活性等优点,不仅提升了离子液体的利用率,大幅度降低了离子液体的用量,而且可以显著提高离子液体在酯化反应中的催化活性。本文主要综述了固载化离子液体在催化酯化反应方面的研究进展,分别介绍了以硅胶、介孔分子筛、磁性介孔二氧化硅纳米材料以及高分子等为载体的固载化离子液体在酯化反应中的催化性能,简要分析了固载化离子液体催化酯化反应的机理与影响固载化离子液体催化活性的因素,并对固载化离子液体目前存在的问题以及今后的发展方向进行了总结,建立系统的载体与离子液体的构效关系,并对其性能进行长期的工业评测是今后的主要努力方向。 相似文献