The 2019 coronavirus disease (COVID-19) has affected more than 200 countries. Wearing masks can effectively cut off the virus spreading route since the coronavirus is mainly spreading by respiratory droplets. However, the common surgical masks cannot be reused, resulting in the increasing economic and resource consumption around the world. Herein, we report a superhydrophobic, photo-sterilize, and reusable mask based on graphene nanosheet-embedded carbon (GNEC) film, with high-density edges of standing structured graphene nanosheets. The GNEC mask exhibits an excellent hydrophobic ability (water contact angle: 157.9°) and an outstanding filtration efficiency with 100% bacterial filtration efficiency (BFE). In addition, the GNEC mask shows the prominent photo-sterilize performance, heating up to 110 °C quickly under the solar illumination. These high performances may facilitate the combat against the COVID-19 outbreaks, while the reusable masks help reducing the economic and resource consumption.

2019 年冠状病毒病 (COVID-19) 已影响 200 多个国家。由于冠状病毒主要通过呼吸道飞沫传播，佩戴口罩可以有效切断病毒传播途径。然而，普通外科口罩无法重复使用，导致全球经济和资源消耗不断增加。在此，我们报告了一种基于石墨烯纳米片嵌入碳（GNEC）薄膜的超疏水、光消毒和可重复使用的口罩，具有直立结构石墨烯纳米片的高密度边缘。 GNEC口罩表现出优异的疏水能力（水接触角：157.9°）和出色的过滤效率，细菌过滤效率（BFE）为100%。此外，GNEC口罩还表现出突出的光消毒性能，在太阳照射下可快速加热至110°C。这些高性能可能有助于对抗 COVID-19 疫情，而可重复使用的口罩有助于减少经济和资源消耗。