负电荷的石墨烯板和带的溶液
Cristina Vallés1, Carlos Drummond, Hassan Saadaoui
1Centre de Recherche Paul Pascal-CNRS, Université de Bordeaux, Av. Schweitzer, 33600 Pessac, France.
Journal of the American Chemical Society
|November 4, 2008
概括
大,原子厚的石墨烯板和带的稳定,对空气敏感的溶液是通过在N-methylpyrrolidone中溶解石墨烯间化合物来制造的. 这些石墨烯材料可以沉积在各种基板上,使用多种测量技术确认它们的单原子厚度.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学 化学 化学
背景情况:
- 石墨烯是一种单一的碳原子层,具有独特的电子和机械性能.
- 对于各种应用来说,生产大型,无缺陷的石墨烯板仍然是一个挑战.
- 现有的石墨烯生产方法往往涉及恶劣的条件或复杂的程序.
研究的目的:
- 开发一种简单可扩展的方法来生产大型原子厚的石墨烯板和带.
- 为了证明合成的石墨烯材料的稳定性和沉积能力.
- 使用多种先进技术,准确测量产生的石墨烯的厚度.
主要方法:
- 在N-methylpyrrolidone (NMP) 中溶解石墨间化合物.
- 使用扫描道显微镜 (STM),原子力显微镜 (AFM),多束干扰计和光学成像,对石墨烯溶液和沉积物的表征.
- 在Sarfus晶片和基板上进行高度测量,以确认单原子厚度.
主要成果:
- 在NMP中从石墨间化合物中自发溶解负电荷的石墨烯层.
- 形成稳定,对空气敏感的溶液,含有横向延伸的石墨烯板和带 (微米尺度).
- 单个原子厚度的确认 (大约. 0.4纳米) 通过多种高分辨率表征技术.
结论:
- 一种简单的,无超声波的方法使得生产大面积,原子厚的石墨烯成为可能.
- 由此产生的石墨烯溶液是稳定的,可以很容易地沉积在各种基板上.
- 这种方法为可扩展的石墨烯合成和应用提供了一个有希望的途径.
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