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Separation of cyanide from an aqueous solution using armchair silicon carbide nanotubes: insights from molecular dynamics simulations

机译:使用扶手椅状碳化硅纳米管从水溶液中分离氰化物:分子动力学模拟的见解

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Separation of cyanide, as a model contaminant, from aqueous solution was investigated using molecular dynamics simulations. In this research, cyanide separation was investigated using armchair silicon carbide (SiC) nanotubes of four different diameters at different applied pressures. The systems included (5,5), (6,6), (7,7) and (8,8) SiC nanotubes placed between two graphene sheets, and an external pressure was applied to the system. The ion permeability, the radial distribution function of nanotube–water and ion–water, the retention time of the cyanide ions, the density of water and water flux and the hydrogen bonding between inner water molecules were investigated. The results showed that all four studied nanotubes accepted water molecules into their interiors, and the (5,5) SiC nanotube could provide high rejection (100%) of cyanide ions.
机译:使用分子动力学模拟研究了氰化物作为模型污染物从水溶液中的分离。在这项研究中,使用四种直径的扶手椅碳化硅(SiC)纳米管在不同的施加压力下研究了氰化物的分离。该系统包括放置在两个石墨烯片之间的(5,5),(6,6),(7,7)和(8,8)SiC纳米管,并且向系统施加了外部压力。研究了离子渗透率,纳米管-水和离子-水的径向分布函数,氰化物离子的保留时间,水和水通量的密度以及内部水分子之间的氢键。结果表明,所有四个研究的纳米管都将水分子吸收到其内部,并且(5,5)SiC纳米管可以提供高排斥率(100%)的氰化物离子。

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