Supplementary information files for: Polycarbene-bearing membrane surface containing silver species for size and charge selective molecular separation

Supplementary files for article Polycarbene-bearing membrane surface containing silver species for size and charge selective molecular separation.
The separation of narrow-sized molecules through membrane technology is a very tedious task. A highly selective molecular separation process can be achieved from hydrophilic membranes with well-defined pores. Herein, we report a blend membrane surface modified with polycarbene stabilized silver species for molecular separation. The excellent separation performance and the high flux of the selective membrane have been attributed to the thin selective layer containing hollow spheres and that filled with silver nanoparticles, which provide the complete rejection of dyes bearing molecular sizes >1.4 nm. The outstanding separation performance of the surface-modified membrane is due to both Donnan exclusion and adsorption effects. The simple surface-modification strategy for blend membranes is adaptable to a variety of other transition metals. Due to the simple fabrication process and inspiring permeability (>80 L/m2/h/), these membranes are economic for the separation of small molecules with good separation efficiency (>95%).

本文补充材料所述之聚合物碳膜表面含有银物种，用于尺寸和电荷选择性分子分离。通过膜技术对窄尺寸分子进行分离是一项极为繁琐的任务。采用具有明确孔径的亲水性膜，可以实现高度选择性的分子分离过程。本研究报道了一种经聚合物碳稳定银物种改性的混合膜表面，用于分子分离。该选择性膜优异的分离性能和较高的通量归因于含有空心球和填充银纳米粒子的薄选择层，它能实现大于1.4 nm分子尺寸染料的完全排斥。表面改性膜卓越的分离性能归因于Donnan排斥和吸附效应的共同作用。这种混合膜的简单表面改性策略适用于多种过渡金属。鉴于其简单的制备过程和鼓舞人心的渗透率（>80 L/m2/h/），这些膜在分离小分子方面具有经济效益，且分离效率较高（>95%）。