通过原子薄的多孔石墨烯进行终极透.
Kemal Celebi1, Jakob Buchheim, Roman M Wyss
1Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Sonneggstrasse 3, CH-8092 Zürich, Switzerland.
Science (New York, N.Y.)
|April 19, 2014
概括
超薄的多孔石墨烯膜为化学分离提供了卓越的透性. 这些二维 (2D) 膜表现出高效的气体和液体的质量转移,因为它们的原子厚度和精确的工程孔.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 化学工程是化学工程的重要组成部分.
背景情况:
- 二维 (2D) 材料为膜应用提供了独特的特性.
- 石墨烯的机械强度和化学稳定性使其成为膜的有希望的材料.
- 精确设计的毛孔对于2D膜的高效质量传输至关重要.
研究的目的:
- 为了研究通过物理穿孔的双层石墨烯膜进行质量转移.
- 为了证明2D多孔石墨烯在高效化学分离方面的潜力.
- 探索孔隙特征与石墨烯膜中的透性之间的关系.
主要方法:
- 制造具有数百万精确控制孔的双层石墨烯膜.
- 孔隙大小分布的特征 (10 nm 到 1 微米).
- 通过膜测量气体,液体和水蒸气的传输速率.
主要成果:
- 通过穿孔的双层石墨烯实现了高效的质量转移.
- 观察到的运输速度与二维 (2D) 运输理论相一致.
- 已证明的透度明显超过有限厚度膜的透度.
结论:
- 多孔石墨烯的原子厚度使最终的透成为可能.
- 物理穿孔的双层石墨烯是有效分离的理想膜.
- 这些二维膜代表了分离技术的重大进步.
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