Electrochemical Properties and Applications of Isolated Single Walled Carbon Nanotubes (SWNTs)

孤立的单壁碳纳米管（SWNT）的电化学性质和应用

• 批准号: EP/D000165/1
• 负责人: Julie MacPherson
• 金额: $ 26.5万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD000165%2F1
• 关键词: Electrochemical; Properties; Applications; Isolated; Single

Nanoscience and nanotechnology are currently of considerable interest to scientists and businesses alike. The key to this interest is the novel behaviour of materials and systems at the 'nanoscale', often completely different to the way systems behave in our macroscopic world. As we look at smaller and smaller objects we often find unexpected behaviour, sometimes with useful consequences, but always revealing more about the science of the world in which we live. An important example of this is the study of electrical conduction through single molecules, which has revealed new and fascinating physics, as well as demonstrating great promise for building smaller, faster computers. In this area, 'single walled carbon nanotubes', are showing great potential and have been the subject of a huge amount of research globally since their discovery just over ten years ago. Single walled carbon nanotubes are hollow cylinders of carbon, with cylinder walls only one atom thick, but lengths up to a million atoms long, and widths 50 000 times smaller than a human hair (an equivalent aspect ratio to a pencil 10 km long!). We propose to study the electrochemical properties of these molecules, investigating a few, or even only one, at a time.Electrochemistry deals with either the production of electricity from chemical processes or chemical changes produced by electricity and is of considerable importance in everyday life (e.g. batteries, fuel cells, sensors etc). The development of new electrode materials and an improved understanding of charge transfer at the nanoscale underpins future advances in electrochemical technology and applications. Carbon nanotubes are potentially fascinating materials to use as electrodes and at which to study electrochemical processes at the molecular scale. We hope to learn interesting new information about these processes and we also expect to see new phenomena due to the small width of the carbon nanotubes. For example, diffusion (movement of molecules to the electrode) at small length scales (nanoscale) is thought to follow different behaviour to diffusion over comparatively large distances. This will affect the electrochemistry at carbon nanotubes, but will also be of significance to understanding diffusion in other contexts at these small scales. The knowledge we will gain may also point the way to industrial applications of carbon nanotube electrodes, most likely in the technologically important area of electrocatalysis and chemical sensing. Additionally, we will learn about the effect of chemical solutions on electrical conduction through single walled carbon nanotubes, which will be of significance for their future electrical applications. We will also use electrochemistry to deposit small amounts of metals such as gold and platinum on the carbon nanotubes, forming 'nanoparticles' which have been templated by the nanotubes. Metal nanoparticles are of great importance for catalysis, for example, platinum nanoparticles can be used as catalysts in fuel cells. This approach should give us a high degree of control over the size of the nanoparticles formed, which in turn affects their catalytic activity.

纳米科学和纳米技术目前引起了科学家和企业的极大兴趣。这种兴趣的关键在于材料和系统在纳米尺度上的新颖行为，这种行为通常与系统在我们宏观世界中的行为方式完全不同。当我们观察越来越小的物体时，我们经常会发现意想不到的行为，有时会产生有用的后果，但总是揭示出更多关于我们生活的世界的科学。这方面的一个重要例子是单分子导电的研究，它揭示了新的和迷人的物理学，并展示了建造更小、更快的计算机的巨大前景。在这一领域，“单壁碳纳米管”正显示出巨大的潜力，自十多年前发现以来，一直是全球大量研究的主题。单壁碳纳米管是中空的碳圆筒，圆柱壁只有一个原子厚，但长度可达100万个原子长，宽度比人的头发小5万倍(相当于10公里长的铅笔！)。我们建议研究这些分子的电化学性质，一次只研究几个，甚至只研究一个。电化学研究通过化学过程产生电能或由电能产生的化学变化，在日常生活(如电池、燃料电池、传感器等)中具有相当重要的作用。新电极材料的发展和对纳米尺度电荷转移的更深入的理解为电化学技术和应用的未来发展奠定了基础。碳纳米管是一种潜在的极具吸引力的材料，可以用作电极，并在分子水平上研究电化学过程。我们希望了解关于这些过程的有趣的新信息，我们也希望看到由于碳纳米管的小宽度而产生的新现象。例如，在较小的长度尺度(纳米尺度)的扩散(分子向电极的移动)被认为遵循相对较长距离的不同扩散行为。这将影响碳纳米管的电化学，但也将对理解这些小尺度下其他环境中的扩散具有重要意义。我们将获得的知识也可能为碳纳米管电极的工业应用指明方向，最有可能的是在技术上重要的电催化和化学传感领域。此外，我们还将了解化学溶液对单壁碳纳米管导电性的影响，这将对其未来的电气应用具有重要意义。我们还将使用电化学在碳纳米管上沉积少量的金属，如金和铂，形成以纳米管为模板的“纳米颗粒”。金属纳米粒子在催化方面具有重要作用，例如，铂纳米粒子可以用作燃料电池的催化剂。这种方法应该能让我们高度控制形成的纳米颗粒的大小，这反过来又会影响它们的催化活性。

项目成果

Self-assembly of decoupled borazines on metal surfaces: the role of the peripheral groups.

• DOI: 10.1002/chem.201402839
• 发表时间: 2014-09-08
• 期刊: Chemistry (Weinheim an der Bergstrasse, Germany)
• 作者: Kalashnyk N;Ganesh Nagaswaran P;Kervyn S;Riello M;Moreton B;Jones TS;De Vita A;Bonifazi D;Costantini G
• 通讯作者: Costantini G

Ultrathin Carbon Nanotube Mat Electrodes for Enhanced Amperometric Detection

• DOI: 10.1002/adma.200900402
• 发表时间: 2009-08-14
• 期刊: ADVANCED MATERIALS
• 影响因子: 29.4
• 作者: Dumitrescu, Ioana;Edgeworth, Jonathan P.;Macpherson, Julie V.
• 通讯作者: Macpherson, Julie V.

Anomalous coarsening driven by reversible charge transfer at metal-organic interfaces.

• DOI: 10.1021/nn505063w
• 发表时间: 2014-12-23
• 期刊: ACS NANO
• 影响因子: 17.1
• 作者: Della Pia, Ada;Riello, Massimo;Floris, Andrea;Stassen, Daphne;Jones, Tim S.;Bonifazi, Davide;De Vita, Alessandro;Costantini, Giovanni
• 通讯作者: Costantini, Giovanni

Two-Dimensional Ketone-Driven Metal-Organic Coordination on Cu(111).

• DOI: 10.1002/chem.201600368
• 发表时间: 2016-06-06
• 期刊: CHEMISTRY-A EUROPEAN JOURNAL
• 影响因子: 4.3
• 作者: Della Pia, Ada;Riello, Massimo;Lawrence, James;Stassen, Daphne;Jones, Tim S.;Bonifazi, Davide;De Vita, Alessandro;Costantini, Giovanni
• 通讯作者: Costantini, Giovanni