The preparation of multi-walled carbon nanotubes with a Ni–P coating by an electroless deposition process
The preparation of multi-walled carbon nanotubes with a Ni–P coating by an electroless deposition process
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DOI：
10.1016/j.carbon.2005.02.015
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发表时间：
2005-07
期刊：
影响因子：
10.9
通讯作者：
Feng Wang;S. Arai;M. Endo
中科院分区：
文献类型：
--
作者：
Feng Wang;S. Arai;M. Endo
采用化学镀法在多壁碳纳米管（MWCNTs，平均直径：100- 200 nm）表面制备了镍磷（Ni-P）涂层。为了制备连续Ni-P镀层的多壁碳纳米管，开发了一种由酸洗、敏化和活化组成的预处理工艺。所得MWCNT具有均匀分布的Ni-P层涂覆在MWCNT上，并保持纤维状外观。X射线衍射（XRD）和透射电子显微镜（TEM）的观察表明，包覆后的MWCNTs由非晶态Ni-P层和包覆在其上的碳纳米管组成。以这些非晶态Ni-P包覆的MWCNTs为前体，通过400°C以上的热处理制备了具有纳米晶Ni-P（晶态Ni和Ni 3 P金属间化合物）层的MWCNTs，并通过差示扫描量热仪（DSC）和XRD研究确定了其性能。本工作为从水溶液中制备具有Ni-P镀层的多壁碳纳米管复合材料提供了一种有效的电化学方法。
The multi-walled carbon nanotubes (MWCNTs, mean diameter: 100–200nm) with nickel–phosphorous (Ni–P) coatings were obtained by an electroless deposition process. To prepare the MWCNTs covered with continual Ni–P layers, a pre-treatment procedure comprised of acid-cleaning, sensitization and activation has been developed. The resulting MWCNTs have a uniform distribution of the Ni–P layers coated on the MWCNTs with the fibrous appearance maintained. X-ray diffraction (XRD) and transmission electron microscopy (TEM) observations revealed that the as-coated MWCNTs were comprised of the amorphous Ni–P layers and inner carbon nanotubes covered with the Ni–P layers. These amorphous Ni–P-coated MWCNTs were used as precursors for preparing MWCNTs with nanocrystalline Ni–P(crystalline Ni and Ni3P intermetallic compound) layers by the heat-treatment above 400°C, which were determined by differential scanning calorimeter (DSC) and XRD studies. The results of this work provide an effective electrochemical method for preparing powdery MWCNTs with Ni–P layer as new composite materials from the aqueous solution.