共查询到18条相似文献,搜索用时 78 毫秒
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以化学气相沉积法直接合成的碳纳米管无纺布作为电极材料,采用简单的包埋法,通过葡萄糖氧化酶和聚乙烯醇的水溶液固定葡萄糖氧化酶制备生物传感器。利用SEM、TEM和BET表征碳纳米管无纺布的内部形貌及孔径分布;利用双电测四探针测试仪和万用表测定碳纳米管无纺布的导电性能;利用拉伸仪测试碳纳米管无纺布的力学性能;利用电化学工作站测定生物传感器的电化学行为及电流响应信号。结果显示传感器的响应电流随葡萄糖浓度的增加呈线性变化,线性范围为2.5 mmol/L~30 mmol/L,检出限为2.5 mmol/L,响应时间约10 s,经硝酸处理可进一步提高传感器的响应电流。基于碳纳米管无纺布的葡萄糖氧化酶生物传感器可实现对葡萄糖的有效检测。 相似文献
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碳纳米管修饰酶传感器的评述 总被引:3,自引:0,他引:3
对酶传感器的作用机理和发展过程进行了介绍,综述了碳纳米管修饰酶传感器的最新研究进展.根据碳纳米管和基础电极结合方式的不同,把碳纳米管修饰酶传感器分为不可逆吸附型、糊类、阵列型、共价键合型几类,并对不同类型碳纳米管修饰酶传感器的制备方法、优缺点进行了评述,最后提出了碳纳米管修饰酶传感器的研究发展方向. 相似文献
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碳纳米管在生物传感器及药物/基因领域的研究进展 总被引:1,自引:0,他引:1
碳纳米管(carbon nanotubes,CNTs)是一种新型纳米材料,具有特殊的纳米结构,在生物医学领域显示出诱人的潜在应用价值和前景,正逐步引起越来越多研究者的关注。功能化碳纳米管(f-CNTs)具有特殊的识别功能、很强的细胞穿透能力和较低的细胞毒性,为它在生物传感器的发展开辟了广阔的前景,同时,也使其在药物和基因运转领域中的应用成为可能。综述了近几年国内外关于碳纳米管在生物传感器、药物和基因转运领域中的应用进展,并简要探讨了其毒性。 相似文献
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Xuefeng Guo 《Advanced materials (Deerfield Beach, Fla.)》2013,25(25):3397-3408
Interactions between biological molecules are fundamental to biology. Probing the complex behaviors of biological systems at the molecular level provides new opportunities to uncover the wealth of molecular information that is usually hidden in conventional ensemble experiments and address the “unanswerable” questions in the physical, chemical and biological sciences. Nanometer‐scale materials are particularly well matched with biomolecular interactions due to their biocompatibility, size comparability, and remarkable electrical properties, thus setting the basis for biological sensing with ultrahigh sensitivity. This brief review aims to highlight the recent progress of the burgeoning field of single‐molecule electrical biosensors based on nanomaterials, with a particular focus on single‐walled carbon nanotubes (SWNTs), for better understanding of the molecular structure, interacting dynamics, and molecular functions. The perspectives and key issues that will be critical to the success of next‐generation single‐molecule biosensors toward practical applications are also discussed, such as the device reproducibility, system integration, and theoretical simulation. 相似文献
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本文主要评述了化学气相沉积法合成碳纳米管的最新研究进展,结合我们在这方面的工作,重点讨论了催化剂、碳源、反应温度对合成碳纳米管质量和产率的影响,并对这一领域的发展趋势作了展望。 相似文献
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B. L. Allen P. D. Kichambare A. Star 《Advanced materials (Deerfield Beach, Fla.)》2007,19(11):1439-1451
There is an explosive interest in 1D nanostructured materials for biological sensors. Among these nanometer‐scale materials, single‐walled carbon nanotubes (SWNTs) offer the advantages of possible biocompatibility, size compatibility, and sensitivity towards minute electrical perturbations. In particular, because of these inherent qualities, changes in SWNT conductivity have been explored in order to study the interaction of biomolecules with SWNTs. This Review discusses these interactions, with a focus on carbon nanotube field‐effect transistors (NTFETs). Recent examples of applications of NTFET devices for detection of proteins, antibody–antigen assays, DNA hybridization, and enzymatic reactions involving glucose are summarized. Examples of complementary techniques, such as microscopy and spectroscopy, are covered as well. 相似文献