Abstract Robust stable filtration membranes based on graphene oxide (GO), with fast and efficient capacity to separate dyes or salts from water, are highly necessary to maintain fresh water resources, but still a challenge to achieve. Herein, an easy and effective route has been demonstrated to address this challenge by intercalating GO with molybdenum disulfide (MoS2) nanosheets. Prompted by the strong van der Waals interactions between GO and MoS2 and the weak interaction between MoS2 and H2O molecules, the interlayer stabilizing force within the MoS2/GO filtration membrane has been greatly enhanced. Therefore, robust stability against harsh conditions (pH values from 3 to 11) without any additional cross-linkers can be realized. Additionally, compared with pure GO membrane, our MoS2/GO membrane exhibits both enhanced pure water flux (from 8.83 L·m−2·h−1 to 48.27 L·m−2·h−1) and improved salts removal capacity (i.e., K3Fe(CN)6 (from 54.32% to 96.85%)), without deteriorating its dyes rejection ratio (i.e., methylene blue (more than 99.50%)). Meanwhile, the membrane also has outstanding cycling stability. For the ubiquitous van der Waals forces between two-dimensional materials, our method can be easily extended to construct other stable and highly efficient filtration membranes.

中文翻译：

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坚固稳定的 MoS2/GO 过滤膜，可有效去除水中的染料和盐，并增强渗透性

摘要 基于氧化石墨烯 (GO) 的坚固稳定的过滤膜具有快速有效地从水中分离染料或盐的能力，对于维持淡水资源非常必要，但仍然是一个挑战。在此，通过将 GO 与二硫化钼 (MoS2) 纳米片嵌入，已经证明了一种简单有效的途径来解决这一挑战。由于GO和MoS2之间的强范德华相互作用以及MoS2和H2O分子之间的弱相互作用，MoS2/GO过滤膜内的层间稳定力得到了极大的增强。因此，无需任何额外的交联剂即可实现对恶劣条件（pH 值从 3 到 11）的稳健稳定性。此外，与纯 GO 膜相比，我们的 MoS2/GO 膜表现出增强的纯水通量（从 8. 83 L·m-2·h-1 到 48.27 L·m-2·h-1) 和改进的盐去除能力（即 K3Fe(CN)6（从 54.32% 到 96.85%）），而不会降低其染料排斥性比（即亚甲蓝（超过 99.50%））。同时，该膜还具有出色的循环稳定性。对于二维材料之间普遍存在的范德华力，我们的方法可以很容易地扩展到构建其他稳定高效的过滤膜。