The emerging two-dimensional (2D) materials have attracted explosive research interest, because of their unique properties and broad applications. However, the instability of typical 2D materials (for instance, black phosphorus (BP)) places restrictions on their practical applications. It is of great importance to develop effective sealing materials to protect these unstable but promising 2D materials. Herein, we develop a highly efficient and removable graphene-seal-wrap (GSW) based on large-area grain-boundary-free graphene films. As a proof of concept, the air- and moisture-sensitive BP was successfully protected by the as-developed GSW. The results reveal that BP can remain stable even under high humidity conditions for up to 18 days, while the bare ones are easily oxidized. More importantly, the graphene sealing layer can be facilely removed without affecting the underlying BP surface, making it an ideal sealing film. This GSW can promptly provide an air- and moisture-proof film for handling unstable 2D materials, paving an avenue for their device fabrication and practical applications.

中文翻译：

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无缝石墨烯密封包装作为二维材料的可移动保护盖

新兴的二维（2D）材料因其独特的性能和广泛的应用而引起了爆炸性的研究兴趣。但是，典型2D材料（例如黑磷（BP））的不稳定性限制了其实际应用。开发有效的密封材料来保护这些不稳定但很有前途的2D材料非常重要。本文中，我们开发了基于大面积无晶界的石墨烯薄膜的高效且可移动的石墨烯密封包装（GSW）。作为概念的证明，对空气和水分敏感的BP已由开发的GSW成功保护。结果表明，即使在高湿度条件下，BP仍可保持稳定长达18天，而裸露的极易被氧化。更重要的是，石墨烯密封层可以轻松去除而不会影响下面的BP表面，使其成为理想的密封膜。该GSW可以迅速提供一种防潮防潮膜，用于处理不稳定的2D材料，从而为其设备制造和实际应用铺平了道路。