Shozab Mehdi Muhammad, Fakhar-E-Alam Muhammad, Asif Muhammad, Rehman Javed, A Alshgari Razan, Jamal Muddasar, Uz Zaman Shafiq, Umar Muhammad, Rafiq Sikander, Muhammad Nawshad, Bin Fawad Junaid, Shafiee Saiful Arifin
Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore 54000, Punjab, Pakistan.
Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore 54000, Punjab, Pakistan.
Molecules. 2023 Oct 19;28(20):7162. doi: 10.3390/molecules28207162.
In this study, ceria nanoparticles (NPs) and deep eutectic solvent (DES) were synthesized, and the ceria-NP's surfaces were modified by DES to form DES-ceria NP filler to develop mixed matrix membranes (MMMs). For the sake of interface engineering, MMMs of 2%, 4%, 6% and 8% filler loadings were fabricated using solution casting technique. The characterizations of SEM, FTIR and TGA of synthesized membranes were performed. SEM represented the surface and cross-sectional morphology of membranes, which indicated that the filler is uniformly dispersed in the polysulfone. FTIR was used to analyze the interaction between the filler and support, which showed there was no reaction between the polymer and DES-ceria NPs as all the peaks were consistent, and TGA provided the variation in the membrane materials with respect to temperature, which categorized all of the membranes as very stable and showed that the trend of stability increases with respect to DES-ceria NPs filler loading. For the evaluation of efficiency of the MMMs, the gas permeation was tested. The permeability of CO was improved in comparison with the pristine Polysulfone (PSF) membrane and enhanced selectivities of 35.43 (α) and 39.3 (α) were found. Hence, the DES-ceria NP-based MMMs proved useful in mitigating CO from a gaseous mixture.
在本研究中，合成了二氧化铈纳米颗粒（NPs）和深共熔溶剂（DES），并用DES对二氧化铈NP的表面进行改性，以形成DES-二氧化铈NP填料，从而制备混合基质膜（MMMs）。为了进行界面工程，采用溶液浇铸技术制备了填料负载量为2%、4%、6%和8%的MMMs。对合成膜进行了扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和热重分析（TGA）表征。SEM表征了膜的表面和横截面形态，表明填料均匀分散在聚砜中。FTIR用于分析填料与载体之间的相互作用，结果显示聚合物与DES-二氧化铈NPs之间没有反应，因为所有峰都一致，TGA给出了膜材料随温度的变化情况，将所有膜归类为非常稳定，并表明稳定性趋势随DES-二氧化铈NPs填料负载量的增加而增加。为了评估MMMs的效率，测试了气体渗透性。与原始聚砜（PSF）膜相比，CO的渗透率有所提高，并且选择性提高到了35.43（α）和39.3（α）。因此，基于DES-二氧化铈NP的MMMs被证明可用于从气体混合物中去除CO。
