Room-temperature synthesis of single-wall carbon nanotubes by an electrochemical process
Room-temperature synthesis of single-wall carbon nanotubes by an electrochemical process
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电化学法室温合成单壁碳纳米管
DOI：
10.1016/j.carbon.2012.04.068
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发表时间：
2012
期刊：
影响因子：
10.9
通讯作者：
Ahmed Shawky
中科院分区：
文献类型：
--
作者：
Tatsuya Konishi;Manabu Kiguchi;Mai Takase;Fumika Nagasawa;Hideki Nabika;Katsuyoshi Ikeda;Kohei Uosaki;Kosei Ueno;Hiroaki Misawa;Kei Murakoshi;Li Yu;Satoshi Yasuda;Ahmed Shawky
单壁碳纳米管（SWCNTs）是通过电化学途径制备的，其方法是在支持Ni纳米催化剂的Au表面的乙酸溶液上施加一个小的负电位。采用电化学方法在金表面生长镍纳米催化剂，并通过沉积时间控制催化剂的粒径。拉曼光谱和扫描探针显微镜对催化剂和沉积样品的观察表明，催化剂结构对swcnts直径分布有强烈的影响。沉积碳的结构取决于催化剂的粒度和结构。拉曼光谱证实了选择性生长的半导体SWCNTs的存在，其直径分布非常窄。
Single-wall carbon nanotubes (SWCNTs) were produced by an electrochemical route by applying a small negative potential to a solution of acetic acid over a Au surface supporting Ni nanocatalysts. Ni nanocatalysts were grown electrochemically on Au surface and their particle sizes were controlled by deposition time. Raman spectroscopy and scanning probe microscopy observations of the catalyst and as-deposited samples and revealed that the catalyst structure strongly affects the SWCNT diameter distribution. The deposited carbon structure depended on the catalyst particle size and structure. Raman spectra confirmed the existence of selectively grown semiconducting SWCNTs with very narrow diameter distribution.