Tailoring gas sensing properties of multi-walled carbon nanotubes by in situ modification with Si, P, and N
Tailoring gas sensing properties of multi-walled carbon nanotubes by in situ modification with Si, P, and N
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DOI：
10.1016/j.carbon.2012.02.047
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发表时间：
2012-07-01
期刊：
影响因子：
10.9
通讯作者：
Grobert, Nicole
中科院分区：
文献类型：
--
作者：
Koos, Antal A.;Nicholls, Rebecca J.;Grobert, Nicole
报道了一种简单的合成含Si、P-N和N的多壁碳纳米管（MWCNTs）的方法，并对其气敏性能进行了研究。多壁碳纳米管的合成由含有二茂铁/三苯基硅烷，二茂铁/三苯基膦/苄胺，和二茂铁/苄胺/甲苯的混合物的气溶胶的热分解。电子显微镜的研究表明，除了Si，P，和N改变的碳纳米管的结构显着。利用含Si、P-N、N的多壁碳纳米管进行了气敏实验，并与在类似实验条件下合成的纯多壁碳纳米管进行了比较。这些实验表明，基于CNT的传感器的气体灵敏度和选择性确实可以定制，而无需对原始纳米管进行任何后处理。纳米管性能和功能的有效原位定制对于纳米管在需要低成本工艺的工业规模上成为可行的材料是重要的。(C)2012爱思唯尔有限公司保留所有权利。
A simple method for the synthesis of multi-walled carbon nanotubes (MWCNTs) containing Si, P-N and N is reported, and their gas sensing properties were investigated. The MWCNTs were synthesised by the thermal decomposition of aerosols containing mixtures of ferrocene/triphenylsilane, ferrocene/triphenylphosphine/benzylamine, and ferrocene/benzylamine/toluene. Electron microscopy studies revealed that the addition of Si, P, and N alters the structure of CNTs dramatically. Gas sensing experiments were carried out using Si, P-N, N-containing MWCNTs, and were compared with pure MWCNTs synthesised at similar experimental conditions. These experiments showed that the gas sensitivity and selectivity of CNT-based sensors can be indeed tailored without any post-processing of the raw nanotubes. The efficient in situ tailoring of nanotube properties and functionality are important for nanotubes to become viable materials at the industrial scale where low cost processes are required. (C) 2012 Elsevier Ltd. All rights reserved.