A Scalable Route to Nanoporous Large-Area Atomically Thin Graphene Membranes by Roll-to-Roll Chemical Vapor Deposition and Polymer Support Casting,ACS Applied Materials & Interfaces

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A Scalable Route to Nanoporous Large-Area Atomically Thin Graphene Membranes by Roll-to-Roll Chemical Vapor Deposition and Polymer Support Casting
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1021/acsami.8b00846
Piran R. Kidambi _{1,

2} , Dhanushkodi D. Mariappan ₁ , Nicholas T. Dee ₁ , Andrey Vyatskikh _{1,

3} , Sui Zhang _{1,

4} , Rohit Karnik ₁ , A. John Hart ₁

Affiliation

Scalable, cost-effective synthesis and integration of graphene is imperative to realize large-area applications such as nanoporous atomically thin membranes (NATMs). Here, we report a scalable route to the production of NATMs via high-speed, continuous synthesis of large-area graphene by roll-to-roll chemical vapor deposition (CVD), combined with casting of a hierarchically porous polymer support. To begin, we designed and built a two zone roll-to-roll graphene CVD reactor, which sequentially exposes the moving foil substrate to annealing and growth atmospheres, with a sharp, isothermal transition between the zones. The configurational flexibility of the reactor design allows for a detailed evaluation of key parameters affecting graphene quality and trade-offs to be considered for high-rate roll-to-roll graphene manufacturing. With this system, we achieve synthesis of uniform high-quality monolayer graphene (I_D/I_G < 0.065) at speeds ≥5 cm/min. NATMs fabricated from the optimized graphene, via polymer casting and postprocessing, show size-selective molecular transport with performance comparable to that of membranes made from conventionally synthesized graphene. Therefore, this work establishes the feasibility of a scalable manufacturing process of NATMs, for applications including protein desalting and small-molecule separations.

中文翻译：

通过卷对卷化学气相沉积和聚合物载体铸造的纳米孔大面积原子薄石墨烯膜的可扩展途径

石墨烯的可扩展，经济高效的合成和集成对于实现大面积应用（如纳米多孔原子薄膜（NATM））至关重要。在这里，我们报告了通过卷对卷化学气相沉积（CVD）高速连续合成大面积石墨烯并结合浇铸多层多孔聚合物载体来生产NATM的可扩展途径。首先，我们设计并建造了一个两区卷对卷石墨烯CVD反应器，该反应器顺序地将移动的箔基板暴露在退火和生长气氛中，并在各区之间形成剧烈的等温过渡。反应器设计的配置灵活性允许对影响石墨烯质量的关键参数进行详细评估，并在高速率卷对卷石墨烯制造过程中考虑折衷考虑。有了这个系统I _D / I _G <0.065），速度≥5 cm / min。通过聚合物浇铸和后处理，由优化的石墨烯制成的NATM表现出尺寸选择性的分子传输性能，其性能可与常规合成的石墨烯制成的膜相媲美。因此，这项工作为包括蛋白质脱盐和小分子分离在内的应用确立了可扩展的NATM制造工艺的可行性。

更新日期：2018-03-19

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