FEMAN Group, IN2UB, Departamento Física Aplicada i Òptica, Universitat de Barcelona, Barcelona, Catalonia, Spain.
Nanotechnology. 2012 Sep 28;23(38):385604. doi: 10.1088/0957-4484/23/38/385604. Epub 2012 Sep 4.
Multiwall carbon nanotubes grown by plasma enhanced chemical vapour deposition were functionalized by H(2)O plasma treatment. Through a controlled functionalization process of the carbon nanotubes (CNTs) we were able to modify and tune their chemical reactivity, expanding the range of potential applications in the field of energy and environment. In particular, different oxygen groups were attached to the surfaces of the nanotubes (e.g. carboxyl, hydroxyl and carbonyl), which changed their physicochemical properties. In order to optimize the main operational parameters of the H(2)O plasma treatment, pressure and power, a Box-Wilson experimental design was adopted. Analysis of the morphology, electrochemical properties and functional groups attached to the surfaces of the CNTs allowed us to determine which treatment conditions were suitable for different applications. After water plasma treatment the specific capacitance of the nanotubes increased from 23 up to 68 F g(-1) at a scan rate of 10 mV s(-1).
采用等离子体增强化学气相沉积法生长的多壁碳纳米管经 H(2)O 等离子体处理进行功能化。通过对碳纳米管（CNT）的可控功能化处理，我们能够改变和调整其化学反应性，从而扩展其在能源和环境领域的潜在应用范围。特别地，不同的氧基团被附着到纳米管表面（例如羧基、羟基和羰基），从而改变了它们的物理化学性质。为了优化 H(2)O 等离子体处理的主要操作参数（压力和功率），采用了 Box-Wilson 实验设计。对 CNT 表面形貌、电化学性能和附着的官能团进行分析，确定了适合不同应用的处理条件。经过水等离子体处理后，在扫描速率为 10 mV s(-1)时，纳米管的比电容从 23 增加到 68 F g(-1)。
