Water-assisted growth of graphene on carbon nanotubes by the chemical vapor deposition method
Water-assisted growth of graphene on carbon nanotubes by the chemical vapor deposition method
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DOI：
10.1039/c3nr33855j
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发表时间：
2013-01-01
期刊：
影响因子：
6.7
通讯作者：
Dai, Ye-Jing
中科院分区：
文献类型：
--
作者：
Feng, Jian-Min;Dai, Ye-Jing
将碳纳米管与石墨烯结合是一种提高石墨烯性能的可行方法。本文报道了一种水辅助的方法，以二茂铁和噻吩为原料，在氩气保护下，通过化学气相沉积法在碳纳米管上生长石墨烯。采用双注入技术分别注入乙醇溶液和水制备石墨烯/碳纳米管。首先，以乙醇溶液和水为原料制备碳纳米管。暂停乙醇溶液的注入，将水单独注入反应器中以蚀刻CNT。此后，将乙醇溶液与水沿着注入，这是获得石墨烯/碳纳米管的关键因素。透射电子显微镜、扫描电子显微镜、X射线衍射和拉曼散射分析证实了产物为石墨烯/碳纳米管杂化材料。X射线光电子能谱分析表明，在石墨烯/CNT的表面上存在富氧官能团。考虑到石墨烯/CNT表面的活性，CdS量子点通过简单的机械混合均匀地粘附在其上。
Combining carbon nanotubes (CNTs) with graphene has been proved to be a feasible method for improving the performance of graphene for some practical applications. This paper reports a water-assisted route to grow graphene on CNTs from ferrocene and thiophene dissolved in ethanol by the chemical vapor deposition method in an argon flow. A double injection technique was used to separately inject ethanol solution and water for the preparation of graphene/CNTs. First, CNTs were prepared from ethanol solution and water. The injection of ethanol solution was suspended and water alone was injected into the reactor to etch the CNTs. Thereafter, ethanol solution was injected along with water, which is the key factor in obtaining graphene/CNTs. Transmission electron microscopy, scanning electron microscopy, Xray diffraction, and Raman scattering analyses confirmed that the products were the hybrid materials of graphene/CNTs. X-ray photo-electron spectroscopy analysis showed the presence of oxygen rich functional groups on the surface of the graphene/CNTs. Given the activity of the graphene/CNT surface, CdS quantum dots adhered onto it uniformly through simple mechanical mixing.