Morphology--composition correlations in carbon nanotubes synthesised with nitrogen and phosphorus containing precursors.
Morphology--composition correlations in carbon nanotubes synthesised with nitrogen and phosphorus containing precursors.
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形态——用含氮和磷前体合成的碳纳米管的组成相关性。
DOI：
10.1039/c4cp04272g
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Nicholls RJ
中科院分区：
文献类型：
--
作者：
Nicholls RJ
我们已经将元素组成与用含氮和磷的前体合成的多壁碳纳米管的结构相关联，并确定了两种化学上不同的主导形态。第一种是锥形结构的管，第二种是具有较少壁的纳米管，其可以沿着其内部通道沿着容纳N2气体，并且比锥形结构的纳米管包含多达十倍的氮。磷存在于催化剂颗粒中，但在两种类型的纳米管的壁内均未检测到。元素分析结合原位电测量，使我们能够监测掺杂纳米管的演变时，电流通过。当电流流过时，N2气体立即结合，并且含气体的纳米管比锥形结构的纳米管更容易重组。由于多壁碳纳米管中杂原子的含量通常是不均匀的，因此了解样品中元素的分布是优化包括气体传感器和电气应用组件在内的设备的重要一步。
We have correlated the elemental composition with the structure of multi-wall carbon nanotubes synthesised with nitrogen and phosphorus containing precursors and identified two chemically distinct dominant morphologies. The first type are cone-structured tubes and the second are nanotubes with fewer walls which can accommodate N2 gas along their inner channel and contain up to ten times more nitrogen than the cone-structured nanotubes. Phosphorus was present in the catalyst particles but was not detected within the walls of either type of nanotube. Elemental analysis combined with in situ electrical measurements has allowed us to monitor the evolution of the doped nanotubes when current is passed. The N2 gas becomes bonded immediately when current flows and the gas-containing nanotubes restructure more easily than the cone-structured ones. Since the inclusion of heteroatoms in multi-wall carbon nanotubes is generally inhomogeneous, understanding the distribution of elements across the sample is an important step towards the optimization of devices including gas sensors and components in electrical applications.
硼介导的纳米管形态。
影响因子：
17.1
作者：
R. Nicholls;Z. Aslam;M. Sarahan;A. Koós;J. Yates;P. Nellist;N. Grobert
通讯作者：
N. Grobert
影响因子：
10.9
作者：
Koos, Antal A.;Nicholls, Rebecca J.;Grobert, Nicole
通讯作者：
Grobert, Nicole
电子束刺穿碳纳米管容器释放储存的氮气
DOI：
10.1007/bf01322353
发表时间：
1975
期刊：
The European Physical Journal B - Condensed Matter and Complex Systems
影响因子：
--
作者：
S. Trasobares;O. Stéphan;C. Colliex;G. Hug;W. Hsu;H. Kroto;D. Walton
通讯作者：
D. Walton