Porous boron-doped diamond/carbon nanotube electrodes.
Porous boron-doped diamond/carbon nanotube electrodes.
复制标题
DOI：
10.1021/am4044344
复制
发表时间：
2014-01
影响因子：
9.5
通讯作者：
H. Zanin;Paul W May;D. Fermín;D. Plana;Sara M. C. Vieira;William I. Milne;E. J. Corat
中科院分区：
文献类型：
--
作者：
H. Zanin;Paul W May;D. Fermín;D. Plana;Sara M. C. Vieira;William I. Milne;E. J. Corat
纳米结构化的掺硼金刚石（BDD）薄膜在电化学环境中用作电极时提高了它们的灵敏度和性能。我们已经开发出一种方法来生产这样的纳米结构，多孔电极沉积BDD薄膜上的一个密集的“森林”的垂直排列的多壁碳纳米管（CNT）。碳纳米管之前已经暴露于纳米金刚石在甲醇中的悬浮液中，导致它们聚集在一起形成“圆锥形”或“蜂窝状”结构。这些纳米结构的CNT/BDD复合电极已被广泛的扫描电子显微镜，拉曼光谱，循环伏安法，和电化学阻抗谱。这些电极不仅具有与BDD相关的优异、众所周知的特性（大电位窗口、化学惰性、低背景水平），而且它们的电活性面积和双层电容值比等效的平板BDD电极大1450倍。
Nanostructuring boron-doped diamond (BDD) films increases their sensitivity and performance when used as electrodes in electrochemical environments. We have developed a method to produce such nanostructured, porous electrodes by depositing BDD thin film onto a densely packed "forest" of vertically aligned multiwalled carbon nanotubes (CNTs). The CNTs had previously been exposed to a suspension of nanodiamond in methanol causing them to clump together into "teepee" or "honeycomb" structures. These nanostructured CNT/BDD composite electrodes have been extensively characterized by scanning electron microscopy, Raman spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. Not only do these electrodes possess the excellent, well-known characteristics associated with BDD (large potential window, chemical inertness, low background levels), but also they have electroactive areas and double-layer capacitance values ∼450 times greater than those for the equivalent flat BDD electrodes.