本项目以开发用于海水淡化的三维立体氧化石墨烯膜为研究目标，提出利用分子链接体和氧化石墨烯之间的共价键合作用构建具有三维立体结构的氧化石墨烯膜。通过调节分子链接体的碳链长度、刚柔性和表面官能团等理化特性精确调控三维立体氧化石墨烯膜的孔隙率、孔径大小、渗透性和表面特性（离子吸附、表面电荷以及共价作用），从而制备得到高稳定、高通量、高选择性能的氧化石墨烯膜，并用于海水淡化。详细考察分子链接体的碳链长度及刚柔性等物化特性和制备工艺对三维立体氧化石墨烯膜的微观形貌和结构、渗透和分离性能的影响规律，揭示有机分子链接体的微观物理化学特性和氧化石墨烯膜宏观性能的相关性。通过分子扩散及离子迁移理论和数学模拟，深入探讨水分子和Na＋、Cl¯等离子在三维立体氧化石墨烯膜孔道中的吸附和扩散行为规律，为开发具有优异海水淡化性能的氧化石墨烯膜提供可靠的科学认知。

Aiming at the development of three-dimensional graphene oxide membrane used for seawater desalination, the project puts forward design, construction, and preparation of three-dimensional graphene oxide membranes through the covalent reactions between the molecular linkers and graphene oxide. By adjusting the physicochemical properties of the molecular linkers, such as the length of carbon chain, the rigidity and surface functional groups, to control porosity, pore size, permeability and surface properties like surface charge, ion adsorption and covalent interactions of the three-dimensional graphene oxide membrane, therefore it can expected to prepare high stabile, high permeate, high selective graphene oxide membrane used for seawater desalination. The influence of the length of carbon chain rigid flexible properties and other physicochemical properties of the molecular linkers as well as preparation technology on the morphology, structure, permeability and separation performance of the three-dimensional graphene oxide membrane will be investigated in detail, revealing the correlation properties between the macroscopic properties of the graphene oxide films and microstructure and physical and chemical properties of the organic molecular linkers. The adsorption and diffusion behavior rules of water molecules, Na+, Cl¯in the pore of three-dimensional graphene oxide membrane are evaluated by molecular diffusion and ion migration theory and mathematical simulation, providing reliable and scientific insight to the development of graphene oxide film with excellent performance of seawater desalination.