Abstract In this study, Mixed Matrix Membranes (MMM) containing carbide derived carbon (CDC) in polysulfone matrix (PSF) were investigated for the separation of CO2. MMM with four different loadings (0.1–2 wt%) were prepared by the dry/wet phase inversion technique. Prepared samples were characterized and tested for CO2 and CH4 gas permeation. The optimization of the control PSF membrane revealed that 30 wt% PSF corresponds to a critical polymer-polymer interaction that suits the volatile solvent loss period to produce an auspicious morphology of an asymmetric membrane. Characterization results of the synthesized CDC revealed its nanoporous character and its high thermal stability in addition to the presence of some surface oxygen moieties such as the carbonyl group. Separation performance of the MMM showed that the both of the CO2 permeance and CO2/CH4 selectivity were independently doubled with the incorporation of CDC in the composite membrane due to the favorable surface chemistry of the CDC and the manipulation of its nanoporosity to enhance solubility and diffusivity. In this study, 1 wt% loading is considered as the optimal CDC loading at which it plays a favorable role in achieving the obtained excellent improvement in membrane performance.

中文翻译：

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包含纳米多孔碳化物衍生碳的混合膜分离 CO2 的性能

摘要 在这项研究中，研究了在聚砜基质 (PSF) 中含有碳化物衍生碳 (CDC) 的混合基质膜 (MMM) 分离 CO2。通过干/湿相转化技术制备了具有四种不同负载量（0.1-2 wt%）的 MMM。对制备的样品进行表征并测试 CO2 和 CH4 气体渗透。对照 PSF 膜的优化表明，30 wt% 的 PSF 对应于关键的聚合物 - 聚合物相互作用，适合挥发性溶剂损失期，以产生不对称膜的吉祥形态。除了一些表面氧部分如羰基的存在外，合成的 CDC 的表征结果揭示了其纳米多孔特性和高热稳定性。MMM 的分离性能表明，由于 CDC 具有良好的表面化学性质以及对其纳米孔隙率的操纵以提高溶解性和扩散性，因此在复合膜中加入 CDC 后，CO2 渗透率和 CO2/CH4 选择性均独立加倍. 在这项研究中，1 wt% 的负载量被认为是最佳的 CDC 负载量，在该负载量下，它在实现膜性能的出色改进方面发挥了有利作用。