Abstract In this paper, we investigate the potential issues low dimensional carbon material desalination membranes may encounter when nanoplastics are present in the systems. This study is performed via molecular dynamics simulations on desalination systems which comprise the nanoporous graphene membrane. It was found that there is high affinity between nanoplastics and graphene, indicating high tendency of the nanoplastic particles to foul the membranes. Furthermore, it was observed that the presence of nanoplastic molecules reduce the salt rejection rate of the membranes. Through this work, we hope to highlight the potential issues caused by the increasing prevalence of nanoplastics in the environment on carbon based desalination membranes, so as to aid the future design of these high performance membranes.

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纳米塑料颗粒对纳米多孔石墨烯膜脱盐影响的研究

摘要 在本文中，我们研究了当系统中存在纳米塑料时低维碳材料脱盐膜可能遇到的潜在问题。这项研究是通过对包含纳米多孔石墨烯膜的海水淡化系统的分子动力学模拟进行的。发现纳米塑料和石墨烯之间具有高亲和力，表明纳米塑料颗粒很容易污染膜。此外，观察到纳米塑料分子的存在降低了膜的脱盐率。通过这项工作，我们希望强调碳基海水淡化膜上纳米塑料在环境中日益流行所引起的潜在问题，以帮助这些高性能膜的未来设计。