Abstract Forward osmosis as an emerging membrane separation technology has attracted increasing attention due to ease in operation, low energy consumption, high rejection efficiency and low irreversible membrane fouling. An ideal forward osmosis membrane should have a high permeate water flux, satisfactory rejection performance and adequate mechanical strength. Graphene oxide nanosheets exhibit the promising potential for development of more efficient forward osmosis membranes because of their two-dimensional and flake-like structure, outstanding mechanical strength and high hydrophilicity. This review paper highlights and discusses the recent research progress in the development of different types of graphene oxide-based forward osmosis membranes mainly focused on enhancing water permeability, reducing reverse salt flux and relieving membrane fouling. The role of graphene oxide nanosheets in the improvement of performance and properties of forward osmosis membranes is highly dependent on the modification methods. It has remained challenging to fabricate an ultrathin graphene oxide lamellar forward osmosis membrane with enough mechanical strength and full utilization of specific advantages of graphene oxide nanosheets. This review can serve as a valuable reference for further developing innovative and effective graphene oxide-based forward osmosis membranes.

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用于水处理的基于氧化石墨烯的正渗透膜的最新进展：批判性评论

摘要 正渗透作为一种新兴的膜分离技术，因其操作简便、能耗低、截留率高、不可逆膜污染少等优点而受到越来越多的关注。理想的正向渗透膜应具有高渗透水通量、令人满意的截留性能和足够的机械强度。氧化石墨烯纳米片由于其二维片状结构、出色的机械强度和高亲水性，在开发更高效的正向渗透膜方面具有广阔的前景。这篇综述论文重点讨论了不同类型的基于氧化石墨烯的正渗透膜开发的最新研究进展，主要侧重于提高透水性，减少反向盐通量并缓解膜污染。氧化石墨烯纳米片在提高正向渗透膜的性能和性能方面的作用高度依赖于改性方法。制造具有足够机械强度和充分利用氧化石墨烯纳米片特定优势的超薄氧化石墨烯层状正向渗透膜仍然具有挑战性。该综述可为进一步开发创新且有效的基于氧化石墨烯的正渗透膜提供有价值的参考。制造具有足够机械强度和充分利用氧化石墨烯纳米片特定优势的超薄氧化石墨烯层状正向渗透膜仍然具有挑战性。该综述可为进一步开发创新且有效的基于氧化石墨烯的正渗透膜提供有价值的参考。制造具有足够机械强度和充分利用氧化石墨烯纳米片特定优势的超薄氧化石墨烯层状正向渗透膜仍然具有挑战性。该综述可为进一步开发创新且有效的基于氧化石墨烯的正渗透膜提供有价值的参考。